<?xml version="1.0"?> 
    <!-- $id$ -->
    
    <!-- 
============================================================================================================
=                                  definition of all existing variables                                    =
=                                            DO NOT CHANGE                                                 =
============================================================================================================
    -->
    <field_definition level="1" prec="4" operation="average" enabled=".TRUE." default_value="1.e20" > <!-- time step automaticaly defined -->

    <!-- 
============================================================================================================
                                  Physical ocean model variables
============================================================================================================
    -->

      <!-- T grid -->
      
      <field_group id="grid_T" grid_ref="grid_T_2D" >
        <field id="e3t"          long_name="T-cell thickness"                    standard_name="cell_thickness"        unit="m"   grid_ref="grid_T_3D" />
        <field id="e3ts"         long_name="T-cell thickness"   field_ref="e3t"  standard_name="cell_thickness"        unit="m"   grid_ref="grid_T_SFC"/>
        <field id="e3t_0"        long_name="Initial T-cell thickness"            standard_name="ref_cell_thickness"    unit="m"   grid_ref="grid_T_3D" />
        <field id="e3tb"         long_name="bottom T-cell thickness"             standard_name="bottom_cell_thickness" unit="m"   grid_ref="grid_T_2D"/> 
        <field id="e3t_300"      field_ref="e3t"                grid_ref="grid_T_zoom_300"       detect_missing_value="true" />
        <field id="e3t_vsum300"  field_ref="e3t_300"            grid_ref="grid_T_vsum"   detect_missing_value="true" />
	<field id="masscello"    long_name="Sea Water Mass per unit area"   standard_name="sea_water_mass_per_unit_area"   unit="kg/m2"   grid_ref="grid_T_3D"/>
        <field id="volcello"     long_name="Ocean Volume"                   standard_name="ocean_volume"   unit="m3"       grid_ref="grid_T_3D"/> 
        <field id="toce"         long_name="temperature"                         standard_name="sea_water_potential_temperature"   unit="degC"     grid_ref="grid_T_3D"/>
        <field id="toce_e3t"     long_name="temperature (thickness weighted)"                                                      unit="degC"     grid_ref="grid_T_3D" > toce * e3t </field >
        <field id="soce"         long_name="salinity"                            standard_name="sea_water_practical_salinity"      unit="1e-3"     grid_ref="grid_T_3D"/>
        <field id="soce_e3t"     long_name="salinity    (thickness weighted)"                                                      unit="1e-3"     grid_ref="grid_T_3D" > soce * e3t </field >

        <field id="toce_e3t_300"      field_ref="toce_e3t"          unit="degree_C"     grid_ref="grid_T_zoom_300"      detect_missing_value="true" />
        <field id="toce_e3t_vsum300"  field_ref="toce_e3t_300"      unit="degress_C*m"  grid_ref="grid_T_vsum"  detect_missing_value="true" />
        <field id="toce_vmean300"     field_ref="toce_e3t_vsum300"  unit="degree_C"     grid_ref="grid_T_vsum"  detect_missing_value="true" > toce_e3t_vsum300/e3t_vsum300 </field>

	<!-- additions to diawri.F90 -->
        <field id="socegrad"    long_name="module of salinity gradient"              unit="psu/m"   grid_ref="grid_T_3D"/>
        <field id="socegrad2"   long_name="square of module of salinity gradient"    unit="psu2/m2" grid_ref="grid_T_3D"/>
        <field id="eken_int"    long_name="vertical integration of kinetic energy"   unit="m3/s2"   />
        <field id="relvor"      long_name="relative vorticity"                       unit="s-1"    grid_ref="grid_T_3D"/>
        <field id="absvor"      long_name="absolute vorticity"                       unit="s-1"    grid_ref="grid_T_3D"/>
        <field id="potvor"      long_name="potential vorticity"                      unit="s-1"    grid_ref="grid_T_3D"/>
        <field id="salt2c"      long_name="Salt content vertically integrated"       unit="1e-3*kg/m2" />

        <!-- t-eddy viscosity coefficients (ldfdyn) -->
	<field id="ahmt_2d"      long_name=" surface t-eddy viscosity coefficient"   unit="m2/s or m4/s"                      />
	<field id="ahmt_3d"      long_name=" 3D      t-eddy viscosity coefficient"   unit="m2/s or m4/s"  grid_ref="grid_T_3D"/>

        <field id="sst"          long_name="sea surface temperature"                            standard_name="sea_surface_temperature"             unit="degC"     />
        <field id="sst2"         long_name="square of sea surface temperature"                  standard_name="square_of_sea_surface_temperature"   unit="degC2"     > sst * sst </field >
        <field id="sstmax"       long_name="max of sea surface temperature"   field_ref="sst"   operation="maximum"                                                 />
        <field id="sstmin"       long_name="min of sea surface temperature"   field_ref="sst"   operation="minimum"                                                 />
        <field id="sstgrad"      long_name="module of sst gradient"                                                                                 unit="degC/m"   />
        <field id="sstgrad2"     long_name="square of module of sst gradient"                                                                       unit="degC2/m2" />
        <field id="sbt"          long_name="sea bottom temperature"                                                                                 unit="degC"     />
        <field id="tosmint"      long_name="vertical integral of temperature times density"     standard_name="integral_wrt_depth_of_product_of_density_and_potential_temperature"  unit="(kg m2) degree_C" />
        <field id="sst_wl"       long_name="Delta SST of warm layer"                                                                                unit="degC"     />
        <field id="sst_cs"       long_name="Delta SST of cool skin"                                                                                 unit="degC"     />
	<field id="temp_3m"      long_name="temperature at 3m"                                                                                      unit="degC"     />
        
        <field id="sss"          long_name="sea surface salinity"                               standard_name="sea_surface_salinity"                unit="1e-3"     />
        <field id="sss2"         long_name="square of sea surface salinity"                                                                         unit="1e-6"      > sss * sss </field >
        <field id="sssmax"       long_name="max of sea surface salinity"      field_ref="sss"   operation="maximum"                                                 />
        <field id="sssmin"       long_name="min of sea surface salinity"      field_ref="sss"   operation="minimum"                                                 />
        <field id="sbs"          long_name="sea bottom salinity"                                                                                    unit="0.001"    />
        <field id="somint"       long_name="vertical integral of salinity times density"        standard_name="integral_wrt_depth_of_product_of_density_and_salinity"  unit="(kg m2) x (1e-3)" /> 

        <field id="taubot"       long_name="bottom stress module"                                                                                   unit="N/m2"     /> 

         <!-- Case EOS = TEOS-10 : output potential temperature -->
	<field id="toce_pot"     long_name="Sea Water Potential Temperature"              standard_name="sea_water_potential_temperature"   unit="degC"     grid_ref="grid_T_3D"/>
        <field id="sst_pot"      long_name="potential sea surface temperature"             standard_name="sea_surface_temperature"             unit="degC"     />
        <field id="tosmint_pot"  long_name="vertical integral of potential temperature times density"   standard_name="integral_wrt_depth_of_product_of_density_and_potential_temperature"  unit="(kg m2) degree_C" />


        <field id="ssh"          long_name="sea surface height"                                 standard_name="sea_surface_height_above_geoid"             unit="m" />
        <field id="ssh2"         long_name="square of sea surface height"                       standard_name="square_of_sea_surface_height_above_geoid"   unit="m2" > ssh * ssh </field >
        <field id="wetdep"       long_name="wet depth"                                          standard_name="wet_depth"                                  unit="m" />
        <field id="sshmax"       long_name="max of sea surface height"        field_ref="ssh"   operation="maximum"                                                 />

        <field id="mldkz5"       long_name="Turbocline depth (Kz = 5e-4)"                       standard_name="ocean_mixed_layer_thickness_defined_by_vertical_tracer_diffusivity"                unit="m"          />
        <field id="mldr10_1"     long_name="Mixed Layer Depth (dsigma = 0.01 wrt 10m)"          standard_name="ocean_mixed_layer_thickness_defined_by_sigma_theta"                                unit="m"          />
        <field id="mldr10_1max"  long_name="Max of Mixed Layer Depth (dsigma = 0.01 wrt 10m)"   field_ref="mldr10_1"   operation="maximum"                                                                          />
        <field id="mldr10_1min"  long_name="Min of Mixed Layer Depth (dsigma = 0.01 wrt 10m)"   field_ref="mldr10_1"   operation="minimum"                                                                          />
        <field id="heatc"        long_name="Heat content vertically integrated"                 standard_name="integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content"   unit="J/m2"       />
        <field id="saltc"        long_name="Salt content vertically integrated"                                                                                                                   unit="1e-3*kg/m2" />

        <!-- EOS -->
        <field id="alpha"        long_name="thermal expansion"                                                         unit="degC-1" grid_ref="grid_T_3D" />
        <field id="beta"         long_name="haline contraction"                                                        unit="1e3"    grid_ref="grid_T_3D" />
        <field id="rhop"         long_name="potential density (sigma0)"        standard_name="sea_water_sigma_theta"   unit="kg/m3"  grid_ref="grid_T_3D" />

        <!-- Energy - horizontal divergence -->
        <field id="eken"         long_name="kinetic energy"          standard_name="specific_kinetic_energy_of_sea_water"   unit="m2/s2"  grid_ref="grid_T_3D" />
        <field id="hdiv"         long_name="horizontal divergence"                                                          unit="s-1"    grid_ref="grid_T_3D" />

        <!-- variables available with MLE -->
        <field id="Lf_NHpf"      long_name="MLE: Lf = N H / f"   unit="m" />

        <!-- next variables available with ln_zad_Aimp=.true. -->
        <field id="Courant"      long_name="Courant number"                                                                 unit="#"   grid_ref="grid_T_3D" />
        <field id="wimp"         long_name="Implicit vertical velocity"                                                     unit="m/s" grid_ref="grid_T_3D" />
        <field id="wexp"         long_name="Explicit vertical velocity"                                                     unit="m/s" grid_ref="grid_T_3D" />
        <field id="wi_cff"       long_name="Fraction of implicit vertical velocity"                                         unit="#"   grid_ref="grid_T_3D" />

        <!-- next variables available with key_diahth -->
        <field id="mlddzt"       long_name="Thermocline Depth (depth of max dT/dz)"         standard_name="depth_at_maximum_upward_derivative_of_sea_water_potential_temperature"             unit="m"                         />
        <field id="mldr10_3"     long_name="Mixed Layer Depth (dsigma = 0.03 wrt 10m)"      standard_name="ocean_mixed_layer_thickness_defined_by_sigma_theta"                                unit="m"                         />
        <field id="mldr0_1"      long_name="Mixed Layer Depth (dsigma = 0.01 wrt sfc)"      standard_name="ocean_mixed_layer_thickness_defined_by_sigma_theta"                                unit="m"                         />
        <field id="mldr0_3"      long_name="Mixed Layer Depth (dsigma = 0.03 wrt sfc)"      standard_name="ocean_mixed_layer_thickness_defined_by_sigma_theta"                                unit="m"                         />
        <field id="mld_dt02"     long_name="Mixed Layer Depth (|dT| = 0.2 wrt 10m)"         standard_name="ocean_mixed_layer_thickness_defined_by_temperature"                                unit="m"                         />
        <field id="topthdep"     long_name="Top of Thermocline Depth (dT = -0.2 wrt 10m)"   standard_name="ocean_mixed_layer_thickness_defined_by_temperature"                                unit="m"                         />
        <field id="pycndep"      long_name="Pycnocline Depth (dsigma[dT=-0.2] wrt 10m)"     standard_name="ocean_mixed_layer_thickness_defined_by_sigma_theta"                                unit="m"                         />
        <field id="BLT"          long_name="Barrier Layer Thickness"                                                                                                                          unit="m"   > topthdep - pycndep </field>
        <field id="tinv"         long_name="Max of vertical invertion of temperature"                                                                                                         unit="degC"                      />
        <field id="depti"        long_name="Depth of max. vert. inv. of temperature"                                                                                                          unit="m"                         />
	<field id="20d"          long_name="Depth of 20C isotherm"                          standard_name="depth_of_isosurface_of_sea_water_potential_temperature"                            unit="m"   axis_ref="iax_20C" />
        <field id="26d"          long_name="Depth of 26C isotherm"                          standard_name="depth_of_isosurface_of_sea_water_potential_temperature"                            unit="m"   axis_ref="iax_26C"   />
        <field id="28d"          long_name="Depth of 28C isotherm"                          standard_name="depth_of_isosurface_of_sea_water_potential_temperature"                            unit="m"   axis_ref="iax_28C" />
        <field id="hc300"        long_name="Heat content 0-300m"                            standard_name="integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content"   unit="J/m2"                      />
        <field id="hc700"        long_name="Heat content 0-700m"                            standard_name="integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content"   unit="J/m2"                      />
        <field id="hc2000"       long_name="Heat content 0-2000m"                           standard_name="integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content"   unit="J/m2"                      />

        <!-- variables available with diaar5 -->
        <field id="botpres"      long_name="Sea Water Pressure at Sea Floor"          standard_name="sea_water_pressure_at_sea_floor"                    unit="dbar" />
        <field id="sshdyn"       long_name="dynamic sea surface height"               standard_name="dynamic_sea_surface_height_above_geoid"             unit="m"    />
        <field id="sshdyn2"      long_name="square of dynamic sea surface height"     standard_name="dynamic_sea_surface_height_above_geoid_squared"     unit="m2"    > sshdyn * sshdyn </field>
        <field id="tnpeo"      long_name="Tendency of ocean potential energy content"                                                                    unit="W/m2" />

        <!-- variables available ln_linssh=.FALSE. -->
        <field id="tpt_dep"      long_name="T-point depth"                  standard_name="depth_below_geoid"   unit="m"   grid_ref="grid_T_3D" />
        <field id="e3tdef"       long_name="T-cell thickness deformation"                                       unit="%"   grid_ref="grid_T_3D" />

        <!-- variables available with ln_diacfl=.true. -->
        <field id="cfl_cu"       long_name="u-courant number"   unit="#" />
        <field id="cfl_cv"       long_name="v-courant number"   unit="#" />
        <field id="cfl_cw"       long_name="w-courant number"   unit="#" />

        <!-- fluxes from damping -->
        <field id="sflx_dmp_cea"  long_name="salt flux due to damping"  standard_name="salt_flux_due_to_damping"          unit="g/m2/s"   />
        <field id="hflx_dmp_cea"  long_name="heat flux due to damping"  standard_name="heat_flux_due_to_damping"          unit="W/m2"     />

      </field_group> <!-- grid_T -->

      <!-- Tides -->

      <field_group id="Tides_T" grid_ref="grid_T_2D" operation="once" >
        <!-- tidal composante -->
        <field id="M2x"          long_name="M2 Elevation harmonic real part "                             unit="m"        />
        <field id="M2y"          long_name="M2 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="S2x"          long_name="S2 Elevation harmonic real part "                             unit="m"        />
        <field id="S2y"          long_name="S2 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="N2x"          long_name="N2 Elevation harmonic real part "                             unit="m"        />
        <field id="N2y"          long_name="N2 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="K1x"          long_name="K1 Elevation harmonic real part "                             unit="m"        />
        <field id="K1y"          long_name="K1 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="O1x"          long_name="O1 Elevation harmonic real part "                             unit="m"        />
        <field id="O1y"          long_name="O1 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="Q1x"          long_name="Q1 Elevation harmonic real part "                             unit="m"        />
        <field id="Q1y"          long_name="Q1 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="M4x"          long_name="M4 Elevation harmonic real part "                             unit="m"        />
        <field id="M4y"          long_name="M4 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="K2x"          long_name="K2 Elevation harmonic real part "                             unit="m"        />
        <field id="K2y"          long_name="K2 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="P1x"          long_name="P1 Elevation harmonic real part "                             unit="m"        />
        <field id="P1y"          long_name="P1 Elevation harmonic imaginary part"                         unit="m"        />
        <field id="Mfx"          long_name="Mf Elevation harmonic real part "                             unit="m"        />
        <field id="Mfy"          long_name="Mf Elevation harmonic imaginary part"                         unit="m"        />
        <field id="Mmx"          long_name="Mm Elevation harmonic real part "                             unit="m"        />
        <field id="Mmy"          long_name="Mm Elevation harmonic imaginary part"                         unit="m"        />
      </field_group>
	 
      <field_group id="Tides_U" grid_ref="grid_U_2D" operation="once" >
        <field id="M2x_u"        long_name="M2 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="M2y_u"        long_name="M2 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="S2x_u"        long_name="S2 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="S2y_u"        long_name="S2 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="N2x_u"        long_name="N2 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="N2y_u"        long_name="N2 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="K1x_u"        long_name="K1 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="K1y_u"        long_name="K1 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="O1x_u"        long_name="O1 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="O1y_u"        long_name="O1 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="Q1x_u"        long_name="Q1 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="Q1y_u"        long_name="Q1 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="M4x_u"        long_name="M4 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="M4y_u"        long_name="M4 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="K2x_u"        long_name="K2 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="K2y_u"        long_name="K2 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="P1x_u"        long_name="P1 current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="P1y_u"        long_name="P1 current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="Mfx_u"        long_name="Mf current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="Mfy_u"        long_name="Mf current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
        <field id="Mmx_u"        long_name="Mm current barotrope along i-axis harmonic real part "        unit="m/s"      />
        <field id="Mmy_u"        long_name="Mm current barotrope along i-axis harmonic imaginary part "   unit="m/s"      />
      </field_group>
	 
      <field_group id="Tides_V" grid_ref="grid_V_2D" operation="once" >
        <field id="M2x_v"        long_name="M2 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="M2y_v"        long_name="M2 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="S2x_v"        long_name="S2 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="S2y_v"        long_name="S2 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="N2x_v"        long_name="N2 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="N2y_v"        long_name="N2 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="K1x_v"        long_name="K1 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="K1y_v"        long_name="K1 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="O1x_v"        long_name="O1 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="O1y_v"        long_name="O1 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="Q1x_v"        long_name="Q1 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="Q1y_v"        long_name="Q1 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="M4x_v"        long_name="M4 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="M4y_v"        long_name="M4 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="K2x_v"        long_name="K2 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="K2y_v"        long_name="K2 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="P1x_v"        long_name="P1 current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="P1y_v"        long_name="P1 current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="Mfx_v"        long_name="Mf current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="Mfy_v"        long_name="Mf current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />
        <field id="Mmx_v"        long_name="Mm current barotrope along j-axis harmonic real part "        unit="m/s"      />
        <field id="Mmy_v"        long_name="Mm current barotrope along j-axis harmonic imaginary part "   unit="m/s"      />	 
      </field_group>

      <!-- OSMOSIS variables (available with ln_zdfosm=.true.) -->

      <field_group id="OSMOSIS_T" grid_ref="grid_T_2D">
        <field id="zwth0"               long_name="surface non-local temperature flux"       unit="deg m/s" />
        <field id="zws0"                long_name="surface non-local salinity flux"          unit="psu m/s" />
        <field id="hbl"                 long_name="boundary layer depth"                     unit="m"       />
        <field id="hbli"                long_name="initial boundary layer depth"             unit="m"       />
        <field id="dstokes"             long_name="stokes drift  depth scale"                unit="m"       />
        <field id="zustke"              long_name="magnitude of stokes drift  at T-points"   unit="m/s"     />
        <field id="zwstrc"              long_name="convective velocity scale"                unit="m/s"     />
        <field id="zwstrl"              long_name="langmuir velocity scale"                  unit="m/s"     />
        <field id="zustar"              long_name="friction velocity"                        unit="m/s"     />
        <field id="zhbl"                long_name="boundary layer depth"                     unit="m"       />
        <field id="zhml"                long_name="mixed layer depth"                        unit="m"       />
        <field id="wind_wave_abs_power" long_name="\rho |U_s| x u*^2"                        unit="mW"      />
        <field id="wind_wave_power"     long_name="U_s \dot  tau"                            unit="mW"      />
        <field id="wind_power"          long_name="\rho  u*^3"                               unit="mW"      />

        <!-- extra OSMOSIS diagnostics -->
        <field id="zwthav"              long_name="av turb flux of T in ml"                  unit="deg m/s" />
        <field id="zt_ml"               long_name="av T in ml"                               unit="deg"     />
        <field id="zwth_ent"            long_name="entrainment turb flux of T"               unit="deg m/s" />
        <field id="zhol"                long_name="Hoenekker number"                         unit="#"       />
        <field id="zdh"                 long_name="Pycnocline  depth - grid"                 unit=" m"      />
      </field_group>

      <field_group id="OSMOSIS_W" grid_ref="grid_W_3D" operation="instant" >
        <field id="ghamt"       long_name="non-local temperature flux"                       unit="deg m/s" />
        <field id="ghams"       long_name="non-local salinity flux"                          unit="psu m/s" />
        <field id="zdtdz_pyc"   long_name="Pycnocline temperature gradient"                  unit=" deg/m"  />
      </field_group>

      <field_group id="OSMOSIS_U" grid_ref="grid_U_2D" >
        <field id="ghamu"       long_name="non-local u-momentum flux"   grid_ref="grid_U_3D" unit="m^2/s^2" />
        <field id="us_x"        long_name="i component of Stokes drift"                      unit="m/s"     />
      </field_group>

      <field_group id="OSMOSIS_V" grid_ref="grid_V_2D" >
        <field id="ghamv"       long_name="non-local v-momentum flux"   grid_ref="grid_V_3D" unit="m^2/s^2" />
        <field id="us_y"        long_name="j component of Stokes drift"                      unit="m/s"     />
      </field_group>
      
      <!-- SBC -->
      <field_group id="SBC" > <!-- time step automaticaly defined based on nn_fsbc -->

        <field_group id="SBC_2D" grid_ref="grid_T_2D" >

          <field id="empmr"        long_name="Net Upward Water Flux"                standard_name="water_flux_out_of_sea_ice_and_sea_water"                              unit="kg/m2/s"   />
          <field id="empbmr"       long_name="Net Upward Water Flux at pre. tstep"  standard_name="water_flux_out_of_sea_ice_and_sea_water"                              unit="kg/m2/s"   />
          <field id="emp_oce"      long_name="Evap minus Precip over ocean"         standard_name="evap_minus_precip_over_sea_water"                                     unit="kg/m2/s"   />
          <field id="emp_ice"      long_name="Evap minus Precip over ice"           standard_name="evap_minus_precip_over_sea_ice"                                       unit="kg/m2/s"   />
          <field id="saltflx"      long_name="Downward salt flux"                                                                                                        unit="g/m2/s"    />
          <field id="fmmflx"       long_name="Water flux due to freezing/melting"                                                                                        unit="kg/m2/s"   />
          <field id="snowpre"      long_name="Snow precipitation"                   standard_name="snowfall_flux"                                                        unit="kg/m2/s"   />
          <field id="runoffs"      long_name="River Runoffs"                        standard_name="water_flux_into_sea_water_from_rivers"                                unit="kg/m2/s"   />
          <field id="precip"       long_name="Total precipitation"                  standard_name="precipitation_flux"                                                   unit="kg/m2/s"   />
	  
          <field id="qt"           long_name="Net Downward Heat Flux"                standard_name="surface_downward_heat_flux_in_sea_water"                              unit="W/m2"                           />
          <field id="qns"          long_name="non solar Downward Heat Flux"                                                                                               unit="W/m2"                           />
          <field id="qsr"          long_name="Shortwave Radiation"                   standard_name="net_downward_shortwave_flux_at_sea_water_surface"                     unit="W/m2"                           />
          <field id="qsr3d"        long_name="Shortwave Radiation 3D distribution"   standard_name="downwelling_shortwave_flux_in_sea_water"                              unit="W/m2"      grid_ref="grid_T_3D" />
          <field id="qrp"          long_name="Surface Heat Flux: Damping"            standard_name="heat_flux_into_sea_water_due_to_newtonian_relaxation"                 unit="W/m2"                           />
          <field id="erp"          long_name="Surface Water Flux: Damping"           standard_name="water_flux_out_of_sea_water_due_to_newtonian_relaxation"              unit="kg/m2/s"                        />
          <field id="taum"         long_name="wind stress module"                    standard_name="magnitude_of_surface_downward_stress"                                 unit="N/m2"                           />
          <field id="wspd"         long_name="wind speed module"                     standard_name="wind_speed"                                                           unit="m/s"                            />
          
          <!-- * variable relative to atmospheric pressure forcing : available with ln_apr_dyn -->
          <field id="ssh_ib"       long_name="Inverse barometer sea surface height"  standard_name="sea_surface_height_correction_due_to_air_pressure_at_low_frequency"   unit="m"        />

          <!-- * variable related to ice shelf forcing * -->
          <field id="fwfisf"       long_name="Ice shelf melting"                             unit="kg/m2/s"  />
          <field id="fwfisf3d"     long_name="Ice shelf melting"                             unit="kg/m2/s"  grid_ref="grid_T_3D" />
          <field id="qlatisf"      long_name="Ice shelf latent heat flux"                    unit="W/m2"     />
          <field id="qlatisf3d"    long_name="Ice shelf latent heat flux"                    unit="W/m2"     grid_ref="grid_T_3D" />
          <field id="qhcisf"       long_name="Ice shelf heat content flux"                   unit="W/m2"     />
          <field id="qhcisf3d"     long_name="Ice shelf heat content flux"                   unit="W/m2"     grid_ref="grid_T_3D" />
          <field id="isfgammat"    long_name="transfert coefficient for isf (temperature) "  unit="m/s"      />
          <field id="isfgammas"    long_name="transfert coefficient for isf (salinity)    "  unit="m/s"      />
          <field id="stbl"         long_name="salinity in the Losh tbl                    "  unit="PSU"      />
          <field id="ttbl"         long_name="temperature in the Losh tbl                 "  unit="C"        />
          <field id="utbl"         long_name="zonal current in the Losh tbl at T point    "  unit="m/s"      />
          <field id="vtbl"         long_name="merid current in the Losh tbl at T point    "  unit="m/s"      />
          <field id="thermald"     long_name="thermal driving of ice shelf melting        "  unit="C"        />
          <field id="tfrz"         long_name="top freezing point (used to compute melt)   "  unit="C"        />
          <field id="tinsitu"      long_name="top insitu temperature (used to cmpt melt)  "  unit="C"        />
          <field id="ustar"        long_name="ustar at T point used in ice shelf melting  "  unit="m/s"      />

          <!-- *_oce variables available with ln_blk_clio or ln_blk_core -->
          <field id="qlw_oce"      long_name="Longwave Downward Heat Flux over open ocean"  standard_name="surface_net_downward_longwave_flux"                 unit="W/m2"  />
          <field id="qsb_oce"      long_name="Sensible Downward Heat Flux over open ocean"  standard_name="surface_downward_sensible_heat_flux"                unit="W/m2"  />
          <field id="qla_oce"      long_name="Latent Downward Heat Flux over open ocean"    standard_name="surface_downward_latent_heat_flux"                  unit="W/m2"  />
          <field id="qt_oce"       long_name="total flux at ocean surface"                  standard_name="surface_downward_heat_flux_in_sea_water"            unit="W/m2"  />
          <field id="qsr_oce"      long_name="solar heat flux at ocean surface"             standard_name="net_downward_shortwave_flux_at_sea_water_surface"   unit="W/m2"  />
          <field id="qns_oce"      long_name="non-solar heat flux at ocean surface (including E-P)"                                                            unit="W/m2"  />
          <field id="qemp_oce"     long_name="Downward Heat Flux from E-P over open ocean"                                                                     unit="W/m2"  />
          <field id="taum_oce"     long_name="wind stress module over open ocean"           standard_name="magnitude_of_surface_downward_stress"               unit="N/m2"  />

          <!-- available key_oasis3 -->
          <field id="snow_ao_cea"  long_name="Snow over ice-free ocean (cell average)"   standard_name="snowfall_flux"                             unit="kg/m2/s"  />
          <field id="snow_ai_cea"  long_name="Snow over sea-ice (cell average)"          standard_name="snowfall_flux"                             unit="kg/m2/s"  />
          <field id="subl_ai_cea"  long_name="Sublimation over sea-ice (cell average)"   standard_name="surface_snow_and_ice_sublimation_flux"     unit="kg/m2/s"  />
          <field id="icealb_cea"   long_name="Ice albedo (cell average)"                 standard_name="sea_ice_albedo"                            unit="1"        />
          <field id="calving_cea"  long_name="Calving"                                   standard_name="water_flux_into_sea_water_from_icebergs"   unit="kg/m2/s"  />
          <field id="iceberg_cea"  long_name="Iceberg"                                   standard_name="water_flux_into_sea_water_from_icebergs"   unit="kg/m2/s"  />
          <field id="iceshelf_cea" long_name="Iceshelf"                                  standard_name="water_flux_into_sea_water_from_iceshelf"   unit="kg/m2/s"  />


          <!-- available if key_oasis3 + conservative method -->
	  <field id="rain"          long_name="Liquid precipitation"                                     standard_name="rainfall_flux"                                                                 unit="kg/m2/s"  />
          <field id="rain_ao_cea"   long_name="Liquid precipitation over ice-free ocean (cell average)"  standard_name="rainfall_flux"                                                                 unit="kg/m2/s"  />
          <field id="evap_ao_cea"   long_name="Evaporation over ice-free ocean (cell average)"           standard_name="water_evaporation_flux"                                                        unit="kg/m2/s"  />
          <field id="isnwmlt_cea"   long_name="Snow over Ice melting (cell average)"                     standard_name="surface_snow_melt_flux"                                                        unit="kg/m2/s"  />
          <field id="fsal_virt_cea" long_name="Virtual salt flux due to ice formation (cell average)"    standard_name="virtual_salt_flux_into_sea_water_due_to_sea_ice_thermodynamics"                unit="kg/m2/s"  />
          <field id="fsal_real_cea" long_name="Real salt flux due to ice formation (cell average)"       standard_name="downward_sea_ice_basal_salt_flux"                                              unit="kg/m2/s"  />
          <field id="hflx_rain_cea" long_name="heat flux due to rainfall"                                standard_name="temperature_flux_due_to_rainfall_expressed_as_heat_flux_into_sea_water"        unit="W/m2"     />
          <field id="hflx_evap_cea" long_name="heat flux due to evaporation"                             standard_name="temperature_flux_due_to_evaporation_expressed_as_heat_flux_out_of_sea_water"   unit="W/m2"     />
          <field id="hflx_subl_cea" long_name="heat flux due to sublimation (from atm. forcings)"        standard_name="temperature_flux_due_to_sublimation_expressed_as_heat_flux_out_of_sea_ice"     unit="W/m2"     />
          <field id="hflx_prec_cea" long_name="heat flux due to all precip"                              standard_name="temperature_flux_due_to_all_precip_expressed_as_heat_flux_into_sea_water"      unit="W/m2"     />
          <field id="hflx_snow_cea" long_name="heat flux due to snow falling"                            standard_name="heat_flux_onto_ocean_and_ice_due_to_snow_thermodynamics"                       unit="W/m2"     />
          <field id="hflx_snow_ai_cea" long_name="heat flux due to snow falling over ice"                standard_name="heat_flux_onto_ice_due_to_snow_thermodynamics"                                 unit="W/m2"     />
          <field id="hflx_snow_ao_cea" long_name="heat flux due to snow falling over ice-free ocean"     standard_name="heat_flux_onto_sea_water_due_to_snow_thermodynamics"                           unit="W/m2"     />
          <field id="hflx_ice_cea"  long_name="heat flux due to ice thermodynamics"                      standard_name="heat_flux_into_sea_water_due_to_sea_ice_thermodynamics"                        unit="W/m2"     />
          <field id="hflx_rnf_cea"  long_name="heat flux due to runoffs"                                 standard_name="temperature_flux_due_to_runoff_expressed_as_heat_flux_into_sea_water"          unit="W/m2"     />
          <field id="sflx_rnf_cea"  long_name="salt flux due to runoffs"                                 standard_name="salt_flux_due_to_runoffs"                                                      unit="g/m2/s"   />
          <field id="hflx_cal_cea"  long_name="heat flux due to calving"                                 standard_name="heat_flux_into_sea_water_due_to_calving"                                       unit="W/m2"     />
          <field id="hflx_icb_cea"  long_name="heat flux due to iceberg"                                 standard_name="heat_flux_into_sea_water_due_to_icebergs"                                      unit="W/m2"     />
          <field id="hflx_isf_cea"  long_name="heat flux due to iceshelf"                                standard_name="heat_flux_into_sea_water_due_to_iceshelf"                                      unit="W/m2"     />
          <field id="bicemel_cea"   long_name="Rate of Melt at Sea Ice Base (cell average)"              standard_name="tendency_of_sea_ice_amount_due_to_basal_melting"                               unit="kg/m2/s"  />
          <field id="licepro_cea"   long_name="Lateral Sea Ice Growth Rate (cell average)"               standard_name="tendency_of_sea_ice_amount_due_to_lateral_growth_of_ice_floes"                 unit="kg/m2/s"  />
          <field id="snowmel_cea"   long_name="Snow Melt Rate (cell average)"                            standard_name="surface_snow_melt_flux"                                                        unit="kg/m2/s"  />
          <field id="sntoice_cea"   long_name="Snow-Ice Formation Rate (cell average)"                   standard_name="tendency_of_sea_ice_amount_due_to_snow_conversion"                             unit="kg/m2/s"  />
          <field id="ticemel_cea"   long_name="Rate of Melt at Upper Surface of Sea Ice (cell average)"  standard_name="tendency_of_sea_ice_amount_due_to_surface_melting"                             unit="kg/m2/s"  />

          <!-- fluxes from relaxation and freshwater budget -->
          <field id="sflx_ssr_cea"  long_name="salt flux due to restoring"    standard_name="salt_flux_due_to_restoring"    unit="g/m2/s"   />
	  <field id="hflx_ssr_cea"  long_name="heat flux due to restoring"    standard_name="heat_flux_due_to_restoring"    unit="W/m2"     />
	  <field id="vflx_ssr_cea"  long_name="volume flux due to restoring"  standard_name="volume_flux_due_to_restoring"  unit="kg/m2/s"  />
          <field id="hflx_fwb_cea"  long_name="heat flux due to fwb"          standard_name="heat_flux_due_to_fwb"          unit="W/m2"     />
          <field id="vflx_fwb_cea"  long_name="volume flux due to fwb"        standard_name="volume_flux_due_to_fwb"        unit="kg/m2/s"  />

          <!-- ice field (nn_ice=1)  -->
          <field id="ice_cover"    long_name="Ice fraction"                                                 standard_name="sea_ice_area_fraction"                              unit="1"            />
          
          <!-- dilution -->
          <field id="emp_x_sst"    long_name="Concentration/Dilution term on SST"                                                                                              unit="kg*degC/m2/s" />
          <field id="emp_x_sss"    long_name="Concentration/Dilution term on SSS"                                                                                              unit="kg*1e-3/m2/s" />        
          <field id="rnf_x_sst"    long_name="Runoff term on SST"                                                                                                              unit="kg*degC/m2/s" />
          <field id="rnf_x_sss"    long_name="Runoff term on SSS"                                                                                                              unit="kg*1e-3/m2/s" />
	  
	  <!-- sbcssm variables -->
          <field id="sst_m"    unit="degC" />
          <field id="sss_m"    unit="psu"  />
          <field id="ssu_m"    unit="m/s"  />
          <field id="ssv_m"    unit="m/s"  />
          <field id="ssh_m"    unit="m"    />
          <field id="e3t_m"    unit="m"    />
          <field id="frq_m"    unit="-"    />

	</field_group>
	
	<!-- scalar variables -->
	<field_group id="SBC_0D"  grid_ref="grid_scalar" >
	</field_group>

      </field_group> <!-- SBC -->

      <!-- U grid -->
      
      <field_group id="grid_U"   grid_ref="grid_U_2D">
        <field id="e2u"           long_name="U-cell width in meridional direction"                   standard_name="cell_width"                  unit="m"                               />
        <field id="e3u"           long_name="U-cell thickness"                                       standard_name="cell_thickness"              unit="m"          grid_ref="grid_U_3D" />
        <field id="e3u_0"         long_name="Initial U-cell thickness"                               standard_name="ref_cell_thickness"          unit="m"          grid_ref="grid_U_3D"/>
        <field id="utau"          long_name="Wind Stress along i-axis"                               standard_name="surface_downward_x_stress"   unit="N/m2"                            />
        <field id="uoce"          long_name="ocean current along i-axis"                             standard_name="sea_water_x_velocity"        unit="m/s"        grid_ref="grid_U_3D" />
    	<field id="uoce_e3u"      long_name="ocean current along i-axis  (thickness weighted)"                                                   unit="m/s"        grid_ref="grid_U_3D"  > uoce * e3u </field>
    	<field id="uoce_e3u_vsum" long_name="ocean current along i-axis * e3u summed on the vertical"  field_ref="uoce_e3u"    unit="m3/s"       grid_ref="grid_U_vsum"/>
        <field id="uocetr_vsum"   long_name="ocean transport along i-axis  summed on the vertical"         field_ref="e2u"       unit="m3/s"> this * uoce_e3u_vsum  </field> 

        <field id="uocetr_vsum_op"    long_name="ocean current along i-axis * e3u * e2u summed on the vertical"  read_access="true"  freq_op="1mo"    field_ref="e2u"       unit="m3/s"> @uocetr_vsum </field>
        <field id="uocetr_vsum_cumul" long_name="ocean current along i-axis * e3u * e2u cumulated from southwest point" freq_offset="_reset_" operation="instant" freq_op="1mo"  unit="m3/s" /> 
        <field id="msftbarot"         long_name="ocean_barotropic_mass_streamfunction"   unit="kg s-1" > uocetr_vsum_cumul * $rau0 </field>


        <field id="ssu"          long_name="ocean surface current along i-axis"                                                                 unit="m/s"                             />
        <field id="sbu"          long_name="ocean bottom current along i-axis"                                                                  unit="m/s"                             />
        <field id="ubar"         long_name="ocean barotropic current along i-axis"                                                              unit="m/s"                             />
        <field id="uocetr_eff"   long_name="Effective ocean transport along i-axis"                 standard_name="ocean_volume_x_transport"    unit="m3/s"       grid_ref="grid_U_3D" />
        <field id="uocet"        long_name="ocean transport along i-axis times temperature (CRS)"                                               unit="degC*m/s"   grid_ref="grid_U_3D" />
        <field id="uoces"        long_name="ocean transport along i-axis times salinity (CRS)"                                                  unit="1e-3*m/s"   grid_ref="grid_U_3D" />

        <!-- u-eddy diffusivity coefficients (available if ln_traldf_OFF=F) -->
        <field id="ahtu_2d"      long_name=" surface u-eddy diffusivity coefficient"   unit="m2/s or m4/s" />
        <field id="ahtu_3d"      long_name=" 3D u-EIV coefficient"                     unit="m2/s or m4/s"      grid_ref="grid_U_3D"/>
        <!-- u-eiv diffusivity coefficients (available if ln_ldfeiv=F) -->
        <field id="aeiu_2d"      long_name=" surface u-EIV coefficient"                unit="m2/s" />
        <field id="aeiu_3d"      long_name=" 3D u-EIV coefficient"                     unit="m2/s"              grid_ref="grid_U_3D"/>

        <!-- variables available with MLE (ln_mle=T) -->
        <field id="psiu_mle"     long_name="MLE streamfunction along i-axis"   unit="m3/s"   grid_ref="grid_U_3D" />

        <!-- uoce_eiv: available EIV (ln_ldfeiv=T and ln_ldfeiv_dia=T) -->
    	<field id="uoce_eiv"      long_name="EIV ocean current along i-axis"                                  standard_name="bolus_sea_water_x_velocity"                     unit="m/s"   grid_ref="grid_U_3D" />
        <field id="ueiv_masstr"   long_name="EIV Ocean Mass X Transport"                                      standard_name="bolus_ocean_mass_x_transport"                   unit="kg/s"  grid_ref="grid_U_3D" />
        <field id="ueiv_heattr"   long_name="ocean bolus heat transport along i-axis"                         standard_name="ocean_heat_x_transport_due_to_bolus_advection"  unit="W"                         />
        <field id="ueiv_salttr"   long_name="ocean bolus salt transport along i-axis"                         standard_name="ocean_salt_x_transport_due_to_bolus_advection"  unit="Kg"                        />
        <field id="ueiv_heattr3d" long_name="ocean bolus heat transport along i-axis"                         standard_name="ocean_heat_x_transport_due_to_bolus_advection"  unit="W"     grid_ref="grid_U_3D" />
        <field id="ueiv_salttr3d" long_name="ocean bolus salt transport along i-axis"                         standard_name="ocean_salt_x_transport_due_to_bolus_advection"  unit="kg"    grid_ref="grid_U_3D" />

        <!-- uoce_bbl: available with ln_trabbl=T and nn_bbl_adv=1 -->
        <field id="uoce_bbl"     long_name="BBL ocean current along i-axis"    unit="m/s"  />
        <!-- ahu_bbl : available with ln_trabbl=T and nn_bbl_ldf=1 -->
        <field id="ahu_bbl"      long_name="BBL diffusive flux along i-axis"   unit="m3/s" />

        <!-- variables available with WAVE (ln_wave=T) -->
        <field id="ustokes"      long_name="Stokes Drift Velocity i-axis"      standard_name="StokesDrift_x_velocity"      unit="m/s"        grid_ref="grid_U_3D" />
        <field id="ustokes_e3u"  long_name="Stokes Drift Velocity i-axis  (thickness weighted)"                            unit="m/s"        grid_ref="grid_U_3D"  > ustokes * e3u </field>

        <!-- variable for ice shelves -->
        <field id="utbl"         long_name="zonal current in the Losh tbl"     unit="m/s" />

        <!-- variables available with diaar5 -->
        <field id="u_masstr"      long_name="Ocean Mass X Transport"                                          standard_name="ocean_mass_x_transport"                         unit="kg/s"  grid_ref="grid_U_3D" />
        <field id="u_masstr_vint" long_name="vertical integral of ocean eulerian mass transport along i-axis" standard_name="vertical_integral_of_ocean_mass_x_transport"    unit="kg/s"                      />
        <field id="u_heattr"      long_name="ocean eulerian heat transport along i-axis"                      standard_name="ocean_heat_x_transport"                         unit="W"                         />
        <field id="u_salttr"      long_name="ocean eulerian salt transport along i-axis"                      standard_name="ocean_salt_x_transport"                         unit="1e-3*kg/s"                 />
        <field id="uadv_heattr"   long_name="ocean advective heat transport along i-axis"                     standard_name="advectice_ocean_heat_x_transport"               unit="W"                         />
        <field id="uadv_salttr"   long_name="ocean advective salt transport along i-axis"                     standard_name="advectice_ocean_salt_x_transport"               unit="1e-3*kg/s"                 />
        <field id="udiff_heattr"  long_name="ocean diffusion heat transport along i-axis"                     standard_name="ocean_heat_x_transport_due_to_diffusion"        unit="W"                         />
        <field id="udiff_salttr"  long_name="ocean diffusion salt transport along i-axis"                     standard_name="ocean_salt_x_transport_due_to_diffusion"        unit="1e-3*kg/s"                 />
      </field_group>
      
      <!-- V grid -->
      
      <field_group id="grid_V"   grid_ref="grid_V_2D">
        <field id="e1v"          long_name="V-cell width in longitudinal direction"                 standard_name="cell_width"                  unit="m"                              />
        <field id="e3v"          long_name="V-cell thickness"                                       standard_name="cell_thickness"              unit="m"          grid_ref="grid_V_3D" />
        <field id="e3v_0"        long_name="Initial V-cell thickness"                               standard_name="ref_cell_thickness"          unit="m"          grid_ref="grid_V_3D" />
        <field id="vtau"         long_name="Wind Stress along j-axis"                               standard_name="surface_downward_y_stress"   unit="N/m2"                            />
        <field id="voce"         long_name="ocean current along j-axis"                             standard_name="sea_water_y_velocity"        unit="m/s"        grid_ref="grid_V_3D" />
        <field id="voce_e3v"     long_name="ocean current along j-axis  (thickness weighted)"                                                   unit="m/s"        grid_ref="grid_V_3D"  > voce * e3v </field>
        <field id="ssv"          long_name="ocean surface current along j-axis"                                                                 unit="m/s"                             />
        <field id="sbv"          long_name="ocean bottom current along j-axis"                                                                  unit="m/s"                             />
        <field id="vbar"         long_name="ocean barotropic current along j-axis"                                                              unit="m/s"                             />
        <field id="vocetr_eff"   long_name="Effective ocean transport along j-axis"                 standard_name="ocean_volume_y_transport"    unit="m3/s"       grid_ref="grid_V_3D" />
        <field id="vocet"        long_name="ocean transport along j-axis times temperature (CRS)"                                               unit="degC*m/s"   grid_ref="grid_V_3D" />
        <field id="voces"        long_name="ocean transport along j-axis times salinity (CRS)"                                                  unit="1e-3*m/s"   grid_ref="grid_V_3D" />

        <!-- v-eddy diffusivity coefficients (available if ln_traldf_OFF=F) -->
        <field id="ahtv_2d"      long_name=" surface v-eddy diffusivity coefficient"     unit="m2/s or (m4/s)^1/2" />
        <field id="ahtv_3d"      long_name=" 3D v-eddy diffusivity coefficient"          unit="m2/s or (m4/s)^1/2"           grid_ref="grid_V_3D"/>
        <!-- v-eiv diffusivity coefficients (available if ln_ldfeiv=F) -->
        <field id="aeiv_2d"      long_name=" surface v-EIV coefficient"                  unit="m2/s" />
        <field id="aeiv_3d"      long_name=" 3D v-EIV coefficient"                       unit="m2/s"                         grid_ref="grid_V_3D" />

        <!-- variables available with MLE (ln_mle=T) -->
        <field id="psiv_mle"     long_name="MLE streamfunction along j-axis"   unit="m3/s"   grid_ref="grid_V_3D" />

        <!-- voce_eiv: available EIV (ln_ldfeiv=T and ln_ldfeiv_dia=T)  -->
	<field id="voce_eiv"     long_name="EIV ocean current along j-axis"  standard_name="bolus_sea_water_y_velocity"     unit="m/s"   grid_ref="grid_V_3D" />
        <field id="veiv_masstr"  long_name="EIV Ocean Mass Y Transport"      standard_name="bolus_ocean_mass_y_transport"   unit="kg/s"  grid_ref="grid_V_3D" />
        <field id="veiv_heattr"   long_name="ocean bolus heat transport along j-axis"       standard_name="ocean_heat_y_transport_due_to_bolus_advection"   unit="W"                         />
        <field id="veiv_salttr"   long_name="ocean bolus salt transport along j-axis"       standard_name="ocean_salt_x_transport_due_to_bolus_advection"   unit="Kg"                        />
        <field id="veiv_heattr3d" long_name="ocean bolus heat transport along j-axis"       standard_name="ocean_heat_y_transport_due_to_bolus_advection"   unit="W"    grid_ref="grid_V_3D" />
        <field id="veiv_salttr3d" long_name="ocean bolus salt transport along j-axis"       standard_name="ocean_salt_y_transport_due_to_bolus_advection"   unit="kg"   grid_ref="grid_V_3D" />


        <!-- voce_bbl: available with ln_trabbl=T and nn_bbl_adv=1 -->
        <field id="voce_bbl"     long_name="BBL ocean current along j-axis"    unit="m/s"  />
        <!-- ahu_bbl : available with ln_trabbl=T and nn_bbl_ldf=1 -->
        <field id="ahv_bbl"      long_name="BBL diffusive flux along j-axis"   unit="m3/s" />

        <!-- variables available with WAVE (ln_wave=T) -->
        <field id="vstokes"      long_name="Stokes Drift Velocity j-axis"      standard_name="StokesDrift_y_velocity"      unit="m/s"        grid_ref="grid_V_3D" />
        <field id="vstokes_e3v"  long_name="Stokes Drift Velocity j-axis  (thickness weighted)"                            unit="m/s"        grid_ref="grid_V_3D"  > vstokes * e3v </field>

        <!-- variable for ice shelves -->
        <field id="vtbl"         long_name="meridional current in the Losh tbl"   unit="m/s" />

        <!-- variables available with diaar5 -->
        <field id="v_masstr"      long_name="ocean eulerian mass transport along j-axis"    standard_name="ocean_mass_y_transport"                          unit="kg/s" grid_ref="grid_V_3D" />
        <field id="v_heattr"      long_name="ocean eulerian heat transport along j-axis"    standard_name="ocean_heat_y_transport"                          unit="W"                         />
        <field id="v_salttr"      long_name="ocean eulerian salt transport along i-axis"    standard_name="ocean_salt_y_transport"                          unit="1e-3*kg/s"                 />
        <field id="vadv_heattr"   long_name="ocean advective heat transport along j-axis"   standard_name="advectice_ocean_heat_y_transport"                unit="W"                         />
        <field id="vadv_salttr"   long_name="ocean advective salt transport along j-axis"   standard_name="advectice_ocean_salt_y_transport"                unit="1e-3*kg/s"                 />
        <field id="vdiff_heattr"  long_name="ocean diffusion heat transport along j-axis"   standard_name="ocean_heat_y_transport_due_to_diffusion"         unit="W"                         />
        <field id="vdiff_salttr"  long_name="ocean diffusion salt transport along j-axis"   standard_name="ocean_salt_y_transport_due_to_diffusion"         unit="1e-3*kg/s"                 />
      </field_group>
      
      <!-- W grid -->
      
      <field_group id="grid_W" grid_ref="grid_W_3D">
        <field id="e3w"          long_name="W-cell thickness"                              standard_name="cell_thickness"                         unit="m"    />
	<field id="woce"         long_name="ocean vertical velocity"                       standard_name="upward_sea_water_velocity"              unit="m/s"  />
	<field id="woce_e3w"     long_name="ocean vertical velocity * e3w"                                                                        unit="m2/s"  > woce * e3w </field>	
        <field id="wocetr_eff"   long_name="effective ocean vertical transport"                                                                   unit="m3/s" />

        <!-- woce_eiv: available with EIV  (ln_ldfeiv=T and ln_ldfeiv_dia=T)  -->
        <field id="woce_eiv"     long_name="EIV ocean vertical velocity"                    standard_name="bolus_upward_sea_water_velocity"       unit="m/s"  />
        <field id="weiv_masstr"  long_name="EIV Upward Ocean Mass Transport"  standard_name="bolus_upward_ocean_mass_transport"             unit="kg/s"   />
        <field id="weiv_heattr3d" long_name="ocean bolus heat transport"    standard_name="ocean_heat_z_transport_due_to_bolus_advection"   unit="W"    />
        <field id="weiv_salttr3d" long_name="ocean bolus salt transport"    standard_name="ocean_salt_z_transport_due_to_bolus_advection"   unit="kg"   />

	<field id="avt"          long_name="vertical eddy diffusivity"                      standard_name="ocean_vertical_heat_diffusivity"       unit="m2/s" />
        <field id="avt_e3w"      long_name="vertical heat diffusivity * e3w"                unit="m3/s" > avt * e3w </field> 		
        <field id="logavt"       long_name="logarithm of vertical eddy diffusivity"         standard_name="ocean_vertical_heat_diffusivity"       unit="m2/s" />
        <field id="avm"          long_name="vertical eddy viscosity"                        standard_name="ocean_vertical_momentum_diffusivity"   unit="m2/s" />
        <field id="avm_e3w"      long_name="vertical eddy viscosity * e3w"   unit="m3/s" > avm * e3w </field> 

        <!-- avs: /= avt with ln_zdfddm=T -->
        <field id="avs"          long_name="salt vertical eddy diffusivity"                 standard_name="ocean_vertical_salt_diffusivity"       unit="m2/s" />
        <field id="avs_e3w"      long_name="vertical salt diffusivity * e3w"   unit="m3/s" > avs * e3w </field> 
	<field id="logavs"       long_name="logarithm of salt vertical eddy diffusivity"    standard_name="ocean_vertical_heat_diffusivity"       unit="m2/s" />

        <!-- avt_evd and avm_evd: available with ln_zdfevd -->
        <field id="avt_evd"      long_name="convective enhancement of vertical diffusivity" standard_name="ocean_vertical_tracer_diffusivity_due_to_convection"     unit="m2/s" />
        <field id="avt_evd_e3w"  long_name="convective enhancement to vertical diffusivity * e3w "    unit="m3/s" > avt_evd * e3w </field> 
	<field id="avm_evd"      long_name="convective enhancement of vertical viscosity"   standard_name="ocean_vertical_momentum_diffusivity_due_to_convection"   unit="m2/s" />

        <!-- avt_tide: available with ln_zdfiwm=T -->
        <field id="av_ratio"     long_name="S over T diffusivity ratio"                     standard_name="salinity_over_temperature_diffusivity_ratio"                     unit="1"    />
        <field id="av_wave"      long_name="internal wave-induced vertical diffusivity"     standard_name="ocean_vertical_tracer_diffusivity_due_to_internal_waves"         unit="m2/s" />
        <field id="bflx_iwm"     long_name="internal wave-induced buoyancy flux"            standard_name="buoyancy_flux_due_to_internal_waves"                             unit="W/kg" />
        <field id="pcmap_iwm"    long_name="power consumed by wave-driven mixing"           standard_name="vertically_integrated_power_consumption_by_wave_driven_mixing"   unit="W/m2"      grid_ref="grid_W_2D" />
        <field id="emix_iwm"     long_name="power density available for mixing"             standard_name="power_available_for_mixing_from_breaking_internal_waves"         unit="W/kg" />

        <!-- variables available with WAVE (ln_wave=T) -->
        <field id="wstokes"      long_name="Stokes Drift vertical velocity"                 standard_name="upward_StokesDrift_velocity"   unit="m/s" />

        <!-- variables available with diaar5 -->   
        <field id="w_masstr"     long_name="vertical mass transport"                        standard_name="upward_ocean_mass_transport"             unit="kg/s"   />
        <field id="w_masstr2"    long_name="square of vertical mass transport"              standard_name="square_of_upward_ocean_mass_transport"   unit="kg2/s2" />

        <!-- EOS -->
        <field id="bn2"          long_name="squared Brunt-Vaisala frequency"                unit="s-2" />

      </field_group>
      
      <!-- F grid -->
      <!-- f-eddy viscosity coefficients (ldfdyn) -->
      <field id="ahmf_2d"      long_name=" surface f-eddy viscosity coefficient"   unit="m2/s or m4/s" />
      <field id="ahmf_3d"      long_name=" 3D      f-eddy viscosity coefficient"   unit="m2/s or m4/s"  grid_ref="grid_T_3D"/>

      <field_group id="scalar"  grid_ref="grid_scalar"  >
      	<!-- Need to have a salinity reference climatological file : sali_ref_clim_monthly -->
        <field id="voltot"     long_name="global total volume"                          standard_name="sea_water_volume"                               unit="m3"   />
        <field id="sshtot"     long_name="global mean ssh"                              standard_name="global_average_sea_level_change"                unit="m"    />
        <field id="sshsteric"  long_name="global mean ssh steric"                       standard_name="global_average_steric_sea_level_change"         unit="m"    />
        <field id="sshthster"  long_name="global mean ssh thermosteric"                 standard_name="global_average_thermosteric_sea_level_change"   unit="m"    />
        <field id="masstot"    long_name="global total mass"                            standard_name="sea_water_mass"                                 unit="kg"   />
        <field id="temptot"    long_name="global mean temperature"                      standard_name="sea_water_potential_temperature"                unit="degC" />
	<field id="saltot"     long_name="global mean salinity"                         standard_name="sea_water_salinity"                             unit="1e-3" />
        <field id="ssttot"     long_name="global mean sea surface temperature"          standard_name="sea_water_conservative_temperature"             unit="degC" />
         <!-- EOS = TEOS-10 -->
        <field id="temptot_pot" long_name="global mean potential temperature"            standard_name="sea_water_potential_temperature"               unit="degC" />

      	<!-- available with ln_diahsb -->
        <field id="bgtemper"     long_name="drift in global mean temperature wrt timestep 1"                 standard_name="change_over_time_in_sea_water_potential_temperature"   unit="degC"     />
        <field id="bgsaline"     long_name="drift in global mean salinity wrt timestep 1"                    standard_name="change_over_time_in_sea_water_practical_salinity"      unit="1e-3"     />
        <field id="bgheatco"     long_name="drift in global mean heat content wrt timestep 1"                                                                                      unit="1.e20J"   />
        <field id="bgheatfx"     long_name="drift in global mean heat flux    wrt timestep 1"                                                                                      unit="W/m2"     />
        <field id="bgsaltco"     long_name="drift in global mean salt content wrt timestep 1"                                                                                      unit="1e-3*km3" />
        <field id="bgvolssh"     long_name="drift in global mean ssh volume wrt timestep 1"                                                                                        unit="km3"      />
        <field id="bgvole3t"     long_name="drift in global mean volume variation (e3t) wrt timestep 1"                                                                            unit="km3"      />
        <field id="bgfrcvol"     long_name="global mean volume from forcing"                                                                                                       unit="km3"      />
        <field id="bgfrctem"     long_name="global mean heat content from forcing"                                                                                                 unit="1.e20J"   />
        <field id="bgfrchfx"     long_name="global mean heat flux from forcing"                                                                                                    unit="W/m2"     />
        <field id="bgfrcsal"     long_name="global mean salt content from forcing"                                                                                                 unit="1e-3*km3" />
        <field id="bgmistem"     long_name="global mean temperature error due to free surface (linssh true)"                                                                       unit="degC"     />
        <field id="bgmissal"     long_name="global mean salinity error due to free surface (linssh true)"                                                                          unit="1e-3"     />
      </field_group>


      <!-- transects -->
      <field_group id="oce_straits">
         <field id="uoce_e3u_ave"         long_name="Monthly average of u*e3u"                        field_ref="uoce_e3u"                    freq_op="1mo"   freq_offset="_reset_" > @uoce_e3u </field>
         <field id="uoce_e3u_ave_vsum"    long_name="Vertical sum of u*e3u"                           field_ref="uoce_e3u_ave"         grid_ref="grid_U_vsum"     />
         <field id="uocetr_vsum_section"  long_name="Total 2D transport in i-direction"               field_ref="uoce_e3u_ave_vsum"    grid_ref="grid_U_scalar"  detect_missing_value="true"> this * e2u </field>
         <field id="uocetr_strait"        long_name="Total transport across lines in i-direction"     field_ref="uocetr_vsum_section"  grid_ref="grid_U_4strait" />
         <field id="u_masstr_strait"      long_name="Sea water transport across line in i-direction"  field_ref="uocetr_strait"        grid_ref="grid_U_4strait_hsum" unit="kg/s"> this * maskMFO_u * $rau0 </field>

         <field id="voce_e3v_ave"         long_name="Monthly average of v*e3v"                        field_ref="voce_e3v"                    freq_op="1mo"   freq_offset="_reset_" > @voce_e3v </field>
         <field id="voce_e3v_ave_vsum"    long_name="Vertical sum of v*e3v"                           field_ref="voce_e3v_ave"         grid_ref="grid_V_vsum"      />
         <field id="vocetr_vsum_section"  long_name="Total 2D transport of in j-direction"            field_ref="voce_e3v_ave_vsum"    grid_ref="grid_V_scalar"  detect_missing_value="true"> this * e1v </field>
         <field id="vocetr_strait"        long_name="Total transport across lines in j-direction"     field_ref="vocetr_vsum_section"  grid_ref="grid_V_4strait"  />
         <field id="v_masstr_strait"      long_name="Sea water transport across line in j-direction"  field_ref="vocetr_strait"        grid_ref="grid_V_4strait_hsum" unit="kg/s"> this * maskMFO_v * $rau0 </field>

         <field id="masstr_strait"        long_name="Sea water transport across line"                                                  grid_ref="grid_4strait"  > u_masstr_strait + v_masstr_strait </field>
      </field_group>

      
      <!-- variables available with ln_floats -->

      <field_group id="floatvar" grid_ref="grid_T_nfloat"  operation="instant" >
        <field id="traj_lon"      long_name="floats longitude"                                                           unit="degrees_east"  />
        <field id="traj_lat"      long_name="floats latitude"                                                            unit="degrees_north" />
        <field id="traj_dep"      long_name="floats depth"                                                               unit="m"             />
        <field id="traj_temp"     long_name="floats temperature"       standard_name="sea_water_potential_temperature"   unit="degC"          />
        <field id="traj_salt"     long_name="floats salinity"          standard_name="sea_water_practical_salinity"      unit="1e-3"          />
        <field id="traj_dens"     long_name="floats in-situ density"   standard_name="sea_water_density"                 unit="kg/m3"         />
        <field id="traj_group"    long_name="floats group"                                                               unit="1"             />
      </field_group>

      <!-- variables available with iceberg trajectories -->

      <field_group id="icbvar" domain_ref="grid_T"  > 
        <field id="berg_melt"          long_name="icb melt rate of icebergs"                       unit="kg/m2/s"                    />
        <field id="berg_melt_hcflx"    long_name="icb heat flux to ocean due to melting heat content"   unit="J/m2/s"                />
        <field id="berg_melt_qlat"     long_name="icb heat flux to ocean due to melting latent heat"    unit="J/m2/s"                />
        <field id="berg_buoy_melt"     long_name="icb buoyancy component of iceberg melt rate"     unit="kg/m2/s"                    />
        <field id="berg_eros_melt"     long_name="icb erosion component of iceberg melt rate"      unit="kg/m2/s"                    />
        <field id="berg_conv_melt"     long_name="icb convective component of iceberg melt rate"   unit="kg/m2/s"                    />
        <field id="berg_virtual_area"  long_name="icb virtual coverage by icebergs"                unit="m2"                         />
        <field id="bits_src"           long_name="icb mass source of bergy bits"                   unit="kg/m2/s"                    />
        <field id="bits_melt"          long_name="icb melt rate of bergy bits"                     unit="kg/m2/s"                    />
        <field id="bits_mass"          long_name="icb bergy bit density field"                     unit="kg/m2"                      />
        <field id="berg_mass"          long_name="icb iceberg density field"                       unit="kg/m2"                      />
        <field id="calving"            long_name="icb calving mass input"                          unit="kg/s"                       />
        <field id="berg_floating_melt" long_name="icb melt rate of icebergs + bits"                unit="kg/m2/s"                    />
        <field id="berg_real_calving"  long_name="icb calving into iceberg class"                  unit="kg/s"     axis_ref="icbcla" />
        <field id="berg_stored_ice"    long_name="icb accumulated ice mass by class"               unit="kg"       axis_ref="icbcla" />
      </field_group>

      <!-- Poleward transport : ptr -->     
      <field_group id="diaptr" >  
        <field id="zomsf"         long_name="Overturning Stream-Function : All basins"                     unit="Sv"         grid_ref="grid_znl_W_3D" />
        <field id="zotem"         long_name="Zonal Mean Temperature : All basins"                          unit="degree_C"   grid_ref="grid_znl_T_3D" />
        <field id="zosal"         long_name="Zonal Mean Salinity : All basins"                             unit="0.001"      grid_ref="grid_znl_T_3D" />
        <field id="zosrf"         long_name="Zonal Mean Surface : All basins"                              unit="m2"         grid_ref="grid_znl_T_3D" />
        <field id="sophtove"      long_name="Overturning Heat Transport: All basins"                       unit="PW"         grid_ref="grid_znl_T_2D" />
        <field id="sopstove"      long_name="Overturning Salt Transport: All basins"                       unit="Giga g/s"   grid_ref="grid_znl_T_2D" />
        <field id="sophtbtr"      long_name="Barotropic Heat Transport: All basins"                        unit="PW"         grid_ref="grid_znl_T_2D" />
        <field id="sopstbtr"      long_name="Barotropic Salt Transport: All basins"                        unit="Giga g/s"   grid_ref="grid_znl_T_2D" /> 
        <field id="sophtadv"      long_name="Advective Heat Transport: All basins"                         unit="PW"         grid_ref="grid_znl_T_2D" />
        <field id="sopstadv"      long_name="Advective Salt Transport: All basins"                         unit="Giga g/s"   grid_ref="grid_znl_T_2D" />
        <field id="sophtldf"      long_name="Diffusive Heat Transport: All basins"                         unit="PW"         grid_ref="grid_znl_T_2D" />
        <field id="sopstldf"      long_name="Diffusive Salt Transport: All basins"                         unit="Giga g/s"   grid_ref="grid_znl_T_2D" />
        <field id="sophtvtr"      long_name="Heat Transport : All basins"                                  unit="PW"         grid_ref="grid_znl_T_2D" />
        <field id="sopstvtr"      long_name="Salt Transport : All basins"                                  unit="Giga g/s"   grid_ref="grid_znl_T_2D" />  
        <field id="sophteiv"      long_name="Heat Transport from mesoscale eddy advection: All basins"     unit="PW"         grid_ref="grid_znl_T_2D" />
        <field id="sopsteiv"      long_name="Salt Transport from mesoscale eddy advection : All basins"    unit="Giga g/s"   grid_ref="grid_znl_T_2D" />
	<field id="sopstadv"      long_name="Advective Salt Transport"                                     unit="Giga g/s"   grid_ref="grid_znl_T_2D" />
        <field id="sophtgyre"     long_name="Overturning heat transport due to gyre" field_ref="sophtove"  unit="W"          grid_ref="grid_znl_T_2D" > sophtvtr - sophtove  </field>
	<field id="sopstgyre"     long_name="Overturning salt transport due to gyre" field_ref="sopstove"  unit="kg/s"       grid_ref="grid_znl_T_2D" > sophtvtr - sopstove  </field>
       </field_group>

       <field_group id="constant_fields"  grid_ref="grid_T_2D"  operation="once" >
         <field id="bathy"       long_name="Sea floor depth below geoid"               standard_name="sea_floor_depth_below_geoid"               unit="m"/>
         <field id="areacello"   long_name="Horizontal area of ocean grid cells"       standard_name="cell_area"                                 unit="m2" />
         <field id="hfgeou"      long_name="Upward geothermal heat flux at sea floor"  standard_name="upward_geothermal_heat_flux_at_sea_floor"  unit="W/m2"/>
         <field id="basins"      long_name="ocean tracer region masks"                 standard_name="ocean_tracer_region_masks"   unit="none" grid_ref="grid_basin"  />
       </field_group>


    <!-- 
============================================================================================================
                  Physical ocean model trend diagnostics : temperature, KE, PE, momentum
============================================================================================================
    -->

   <!-- variables available with ln_tra_trd -->
   <!-- Asselin trends  calculated on odd time steps-->
   <field_group id="trendT_odd"  grid_ref="grid_T_3D">
     <field id="ttrd_atf"      long_name="temperature-trend: asselin time filter"       unit="degree_C/s" />
     <field id="strd_atf"      long_name="salinity   -trend: asselin time filter"       unit="0.001/s" />
     <!-- Thickness weighted versions: -->
     <field id="ttrd_atf_e3t"      unit="degC/s * m"  >  ttrd_atf * e3t </field>
     <field id="strd_atf_e3t"      unit="1e-3/s * m"  >  strd_atf * e3t </field>
     <!-- OMIP  layer-integrated trends -->
     <field id="ttrd_atf_li"      long_name="layer integrated heat-trend: asselin time filter "       unit="W/m^2" > ttrd_atf_e3t * 1026.0 * 3991.86795711963  </field>
     <field id="strd_atf_li"      long_name="layer integrated salt   -trend: asselin time filter "       unit="kg/(m^2 s)" > strd_atf_e3t * 1026.0 * 0.001 </field>
   </field_group>

   <!-- Other trends  calculated on even time steps-->
   <field_group id="trendT_even" grid_ref="grid_T_3D">
     <field id="ttrd_xad"      long_name="temperature-trend: i-advection"                                                                                          unit="degC/s"                        />
     <field id="strd_xad"      long_name="salinity   -trend: i-advection"                                                                                          unit="1e-3/s"                        />
     <field id="ttrd_yad"      long_name="temperature-trend: j-advection"                                                                                          unit="degC/s"                        />
     <field id="strd_yad"      long_name="salinity   -trend: j-advection"                                                                                          unit="1e-3/s"                        />
     <field id="ttrd_zad"      long_name="temperature-trend: k-advection"                                                                                          unit="degC/s"                        />
     <field id="strd_zad"      long_name="salinity   -trend: k-advection"                                                                                          unit="1e-3/s"                        />
     <field id="ttrd_ad"       long_name="temperature-trend: advection"               standard_name="tendency_of_sea_water_temperature_due_to_advection"           unit="degC/s"                         > sqrt( ttrd_xad^2 + ttrd_yad^2 + ttrd_zad^2 ) </field>
     <field id="strd_ad"       long_name="salinity   -trend: advection"               standard_name="tendency_of_sea_water_salinity_due_to_advection"              unit="1e-3/s"                         > sqrt( strd_xad^2 + strd_yad^2 + strd_zad^2 ) </field>
     <field id="ttrd_totad"    long_name="temperature-trend: total advection"         standard_name="tendency_of_sea_water_salinity_due_to_advection"              unit="degC/s"                        />
     <field id="strd_totad"    long_name="salinity   -trend: total advection"         standard_name="tendency_of_sea_water_salinity_due_to_advection"              unit="1e-3/s"                        />
     <field id="ttrd_sad"      long_name="temperature-trend: surface adv. (linssh true)"                                                                           unit="degC/s"   grid_ref="grid_T_2D" />
     <field id="strd_sad"      long_name="salinity   -trend: surface adv. (linssh true)"                                                                           unit="1e-3/s"   grid_ref="grid_T_2D" />
     <field id="ttrd_ldf"      long_name="temperature-trend: lateral  diffusion"      standard_name="tendency_of_sea_water_temperature_due_to_horizontal_mixing"   unit="degC/s"                        />
     <field id="strd_ldf"      long_name="salinity   -trend: lateral  diffusion"      standard_name="tendency_of_sea_water_salinity_due_to_horizontal_mixing"      unit="1e-3/s"                        />
     <field id="ttrd_zdf"      long_name="temperature-trend: vertical diffusion"      standard_name="tendency_of_sea_water_temperature_due_to_vertical_mixing"     unit="degC/s"                        />
     <field id="strd_zdf"      long_name="salinity   -trend: vertical diffusion"      standard_name="tendency_of_sea_water_salinity_due_to_vertical_mixing"        unit="1e-3/s"                        />
     <field id="ttrd_evd"      long_name="temperature-trend: EVD convection"                                                                                       unit="degC/s"                        />
     <field id="strd_evd"      long_name="salinity   -trend: EVD convection"                                                                                       unit="1e-3/s"                        />

     <!-- ln_traldf_iso=T only (iso-neutral diffusion) -->
     <field id="ttrd_iso"      long_name="temperature-trend: isopycnal diffusion"                             unit="degC/s" > ttrd_ldf + ttrd_zdf - ttrd_zdfp </field>
     <field id="strd_iso"      long_name="salinity   -trend: isopycnal diffusion"                             unit="1e-3/s" > strd_ldf + strd_zdf - strd_zdfp </field>
     <field id="ttrd_zdfp"     long_name="temperature-trend: pure vert. diffusion"   unit="degC/s" />
     <field id="strd_zdfp"     long_name="salinity   -trend: pure vert. diffusion"   unit="1e-3/s" />

     <!-- -->
     <field id="ttrd_dmp"      long_name="temperature-trend: interior restoring"        unit="degC/s" />
     <field id="strd_dmp"      long_name="salinity   -trend: interior restoring"        unit="1e-3/s" />
     <field id="ttrd_bbl"      long_name="temperature-trend: bottom boundary layer"     unit="degC/s" />
     <field id="strd_bbl"      long_name="salinity   -trend: bottom boundary layer"     unit="1e-3/s" />
     <field id="ttrd_npc"      long_name="temperature-trend: non-penetrative conv."     unit="degC/s" />
     <field id="strd_npc"      long_name="salinity   -trend: non-penetrative conv."     unit="1e-3/s" />
     <field id="ttrd_qns"      long_name="temperature-trend: non-solar flux + runoff"   unit="degC/s" grid_ref="grid_T_2D" />
     <field id="strd_cdt"      long_name="salinity   -trend: C/D term       + runoff"   unit="degC/s" grid_ref="grid_T_2D" />
     <field id="ttrd_qsr"      long_name="temperature-trend: solar penetr. heating"     unit="degC/s" />
     <field id="ttrd_bbc"      long_name="temperature-trend: geothermal heating"        unit="degC/s" />

     <!-- Thickness weighted versions: -->
     <field id="ttrd_xad_e3t"      unit="degC/s * m" >  ttrd_xad * e3t </field>
     <field id="strd_xad_e3t"      unit="1e-3/s * m" >  strd_xad * e3t </field>
     <field id="ttrd_yad_e3t"      unit="degC/s * m" >  ttrd_yad * e3t </field>
     <field id="strd_yad_e3t"      unit="1e-3/s * m" >  strd_yad * e3t </field>
     <field id="ttrd_zad_e3t"      unit="degC/s * m" >  ttrd_zad * e3t </field>
     <field id="strd_zad_e3t"      unit="1e-3/s * m" >  strd_zad * e3t </field>
     <field id="ttrd_ad_e3t"       unit="degC/s * m" >  ttrd_ad  * e3t </field>
     <field id="strd_ad_e3t"       unit="1e-3/s * m" >  strd_ad  * e3t </field>
     <field id="ttrd_totad_e3t"    unit="degC/s * m" >  ttrd_totad  * e3t </field>
     <field id="strd_totad_e3t"    unit="1e-3/s * m" >  strd_totad  * e3t </field>
     <field id="ttrd_ldf_e3t"      unit="degC/s * m" >  ttrd_ldf * e3t </field>
     <field id="strd_ldf_e3t"      unit="1e-3/s * m" >  strd_ldf * e3t </field>
     <field id="ttrd_zdf_e3t"      unit="degC/s * m" >  ttrd_zdf * e3t </field>
     <field id="strd_zdf_e3t"      unit="1e-3/s * m" >  strd_zdf * e3t </field>
     <field id="ttrd_evd_e3t"      unit="degC/s * m" >  ttrd_evd * e3t </field>
     <field id="strd_evd_e3t"      unit="1e-3/s * m" >  strd_evd * e3t </field>

     <!-- ln_traldf_iso=T only (iso-neutral diffusion) -->
     <field id="ttrd_iso_e3t"      unit="degC/s * m"  >  ttrd_iso * e3t </field>
     <field id="strd_iso_e3t"      unit="1e-3/s * m"  >  strd_iso * e3t </field>
     <field id="ttrd_zdfp_e3t"     unit="degC/s * m"  >  ttrd_zdfp * e3t </field>
     <field id="strd_zdfp_e3t"     unit="1e-3/s * m"  >  strd_zdfp * e3t </field>

     <!-- -->
     <field id="ttrd_dmp_e3t"      unit="degC/s * m"  >  ttrd_dmp * e3t </field>
     <field id="strd_dmp_e3t"      unit="1e-3/s * m"  >  strd_dmp * e3t </field>
     <field id="ttrd_bbl_e3t"      unit="degC/s * m"  >  ttrd_bbl * e3t </field>
     <field id="strd_bbl_e3t"      unit="1e-3/s * m"  >  strd_bbl * e3t </field>
     <field id="ttrd_npc_e3t"      unit="degC/s * m"  >  ttrd_npc * e3t </field>
     <field id="strd_npc_e3t"      unit="1e-3/s * m"  >  strd_npc * e3t </field>
     <field id="ttrd_qns_e3t"      unit="degC/s * m"  >  ttrd_qns * e3ts </field>
     <field id="strd_cdt_e3t"      unit="degC/s * m"  >  strd_cdt * e3ts </field>
     <field id="ttrd_qsr_e3t"      unit="degC/s * m"  >  ttrd_qsr * e3t </field>
     <field id="ttrd_bbc_e3t"      unit="degC/s * m"  >  ttrd_bbc * e3t </field>

     <!-- OMIP  layer-integrated trends -->
     <field id="ttrd_totad_li"    long_name="layer integrated heat-trend: total advection"         unit="W/m^2"     > ttrd_totad_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="strd_totad_li"    long_name="layer integrated salt-trend: total advection"         unit="kg/(m^2 s)"    > strd_totad_e3t * 1026.0 * 0.001  </field>
     <field id="ttrd_evd_li"      long_name="layer integrated heat-trend: EVD convection"          unit="W/m^2"    > ttrd_evd_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="strd_evd_li"      long_name="layer integrated salt-trend: EVD convection"          unit="kg/(m^2 s)"  > strd_evd_e3t * 1026.0 * 0.001  </field>
     <field id="ttrd_iso_li"      long_name="layer integrated heat-trend: isopycnal diffusion"     unit="W/m^2" > ttrd_iso_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="strd_iso_li"      long_name="layer integrated salt-trend: isopycnal diffusion"     unit="kg/(m^2 s)" > strd_iso_e3t * 1026.0 * 0.001  </field>
     <field id="ttrd_zdfp_li"     long_name="layer integrated heat-trend: pure vert. diffusion"    unit="W/m^2" > ttrd_zdfp_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="strd_zdfp_li"     long_name="layer integrated salt-trend: pure vert. diffusion"    unit="kg/(m^2 s)" > strd_zdfp_e3t * 1026.0 * 0.001  </field>
     <field id="ttrd_qns_li"      long_name="layer integrated heat-trend: non-solar flux + runoff" unit="W/m^2" grid_ref="grid_T_2D"> ttrd_qns_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="ttrd_qsr_li"      long_name="layer integrated heat-trend: solar flux"              unit="W/m^2"  grid_ref="grid_T_3D"> ttrd_qsr_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="ttrd_bbl_li"      long_name="layer integrated heat-trend: bottom boundary layer "  unit="W/m^2" > ttrd_bbl_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="strd_bbl_li"      long_name="layer integrated salt-trend: bottom boundary layer "  unit="kg/(m^2 s)" > strd_bbl_e3t * 1026.0 * 0.001  </field>
     <field id="ttrd_evd_li"      long_name="layer integrated heat-trend: evd convection "         unit="W/m^2" >ttrd_evd_e3t * 1026.0 * 3991.86795711963  </field>
     <field id="strd_evd_li"      long_name="layer integrated salt-trend: evd convection "         unit="kg/(m^2 s)" > strd_evd_e3t * 1026.0 * 0.001  </field>

   </field_group>

   <!--  Total trends calculated every time step-->
   <field_group id="trendT" grid_ref="grid_T_3D">
     <field id="ttrd_tot"      long_name="temperature-trend: total model trend"         unit="degC/s" />
     <field id="strd_tot"      long_name="salinity   -trend: total model trend"         unit="1e-3/s" />
     <!-- Thickness weighted versions: -->
     <field id="ttrd_tot_e3t"      unit="degC/s * m"  >  ttrd_tot * e3t </field>
     <field id="strd_tot_e3t"      unit="1e-3/s * m"  >  strd_tot * e3t </field>
     <!-- OMIP  layer-integrated total trends -->
     <field id="ttrd_tot_li"      long_name="layer integrated heat-trend: total model trend :"         unit="W/m^2" > ttrd_tot_e3t * 1026.0 * 3991.86795711963 </field>
     <field id="strd_tot_li"      long_name="layer integrated salt-trend: total model trend :"         unit="kg/(m^2 s)" > strd_tot_e3t * 1026.0 * 0.001  </field>

     <!-- **** these trends have not been apportioned to all/even/odd ts yet **** -->
     <!-- variables available with ln_KE_trd -->
     <field id="ketrd_hpg"     long_name="ke-trend: hydrostatic pressure gradient"          unit="W/s^3"                        />
     <field id="ketrd_spg"     long_name="ke-trend: surface     pressure gradient"          unit="W/s^3"                        />
     <field id="ketrd_spgexp"  long_name="ke-trend: surface pressure gradient (explicit)"   unit="W/s^3"                        />
     <field id="ketrd_spgflt"  long_name="ke-trend: surface pressure gradient (filter)"     unit="W/s^3"                        />
     <field id="ssh_flt"       long_name="filtered contribution to ssh (dynspg_flt)"        unit="m"       grid_ref="grid_T_2D" />
     <field id="w0"            long_name="surface vertical velocity"                        unit="m/s"     grid_ref="grid_T_2D" />
     <field id="pw0_exp"       long_name="surface pressure flux due to ssh"                 unit="W/s^2"   grid_ref="grid_T_2D" />
     <field id="pw0_flt"       long_name="surface pressure flux due to filtered ssh"        unit="W/s^2"   grid_ref="grid_T_2D" />
     <field id="ketrd_keg"     long_name="ke-trend: KE gradient         or hor. adv."       unit="W/s^3"                        />
     <field id="ketrd_rvo"     long_name="ke-trend: relative  vorticity or metric term"     unit="W/s^3"                        />
     <field id="ketrd_pvo"     long_name="ke-trend: planetary vorticity"                    unit="W/s^3"                        />
     <field id="ketrd_zad"     long_name="ke-trend: vertical  advection"                    unit="W/s^3"                        />
     <field id="ketrd_udx"     long_name="ke-trend: U.dx[U]"                                unit="W/s^3"                        />
     <field id="ketrd_ldf"     long_name="ke-trend: lateral   diffusion"                    unit="W/s^3"                        />
     <field id="ketrd_zdf"     long_name="ke-trend: vertical  diffusion"                    unit="W/s^3"                        />
     <field id="ketrd_tau"     long_name="ke-trend: wind stress "                           unit="W/s^3"   grid_ref="grid_T_2D" />
     <field id="ketrd_bfr"     long_name="ke-trend: bottom friction (explicit)"             unit="W/s^3"                        />   
     <field id="ketrd_bfri"    long_name="ke-trend: bottom friction (implicit)"             unit="W/s^3"                        />   
     <field id="ketrd_atf"     long_name="ke-trend: asselin time filter trend"              unit="W/s^3"                        />  
     <field id="ketrd_convP2K" long_name="ke-trend: conversion (potential to kinetic)"      unit="W/s^3"                        />
     <field id="KE"            long_name="kinetic energy: u(n)*u(n+1)/2"                    unit="W/s^2"                        />   

     <!-- variables available when explicit lateral mixing is used (ln_dynldf_OFF=F) -->
     <field id="dispkexyfo"    long_name="KE-trend: lateral  mixing induced dissipation"   standard_name="ocean_kinetic_energy_dissipation_per_unit_area_due_to_xy_friction"                   unit="W/m^2" grid_ref="grid_T_2D" />   
     <field id="dispkevfo"     long_name="KE-trend: vertical mixing induced dissipation"   standard_name="ocean_kinetic_energy_dissipation_per_unit_area_due_to_vertical_friction"             unit="W/m^2" grid_ref="grid_T_2D" />   
     <!-- variables available with ln_traadv_eiv=T and ln_diaeiv=T -->
     <field id="eketrd_eiv"    long_name="EKE-trend due to parameterized eddy advection"   standard_name="tendency_of_ocean_eddy_kinetic_energy_content_due_to_parameterized_eddy_advection"   unit="W/m^2" grid_ref="grid_T_2D" />   

     <!-- variables available with ln_PE_trd -->
     <field id="petrd_xad"     long_name="pe-trend: i-advection"                unit="W/m^3"                        />
     <field id="petrd_yad"     long_name="pe-trend: j-advection"                unit="W/m^3"                        />
     <field id="petrd_zad"     long_name="pe-trend: k-advection"                unit="W/m^3"                        />
     <field id="petrd_sad"     long_name="pe-trend: surface adv. (linssh true)" unit="W/m^3"   grid_ref="grid_T_2D" />
     <field id="petrd_ldf"     long_name="pe-trend: lateral  diffusion"         unit="W/m^3"                        />
     <field id="petrd_zdf"     long_name="pe-trend: vertical diffusion"         unit="W/m^3"                        />
     <field id="petrd_zdfp"    long_name="pe-trend: pure vert. diffusion"       unit="W/m^3"                        />
     <field id="petrd_dmp"     long_name="pe-trend: interior restoring"         unit="W/m^3"                        />
     <field id="petrd_bbl"     long_name="pe-trend: bottom boundary layer"      unit="W/m^3"                        />
     <field id="petrd_npc"     long_name="pe-trend: non-penetrative conv."      unit="W/m^3"                        />
     <field id="petrd_nsr"     long_name="pe-trend: surface forcing + runoff"   unit="W/m^3"                        />
     <field id="petrd_qsr"     long_name="pe-trend: solar penetr. heating"      unit="W/m^3"                        />
     <field id="petrd_bbc"     long_name="pe-trend: geothermal heating"         unit="W/m^3"                        />
     <field id="petrd_atf"     long_name="pe-trend: asselin time filter"        unit="W/m^3"                        />
     <field id="PEanom"        long_name="potential energy anomaly"             unit="1"                            />   
     <field id="alphaPE"       long_name="partial deriv. of PEanom wrt T"       unit="degC-1"                       />   
     <field id="betaPE"        long_name="partial deriv. of PEanom wrt S"       unit="1e3"                          />   
   </field_group>

   <field_group id="trendU" grid_ref="grid_U_3D">
     <!-- variables available with ln_dyn_trd -->
     <field id="utrd_hpg"       long_name="i-trend: hydrostatic pressure gradient"          unit="m/s^2"                        />
     <field id="utrd_spg"       long_name="i-trend: surface     pressure gradient"          unit="m/s^2"                        />
     <field id="utrd_spgexp"    long_name="i-trend: surface pressure gradient (explicit)"   unit="m/s^2"                        />
     <field id="utrd_spgflt"    long_name="i-trend: surface pressure gradient (filtered)"   unit="m/s^2"                        />
     <field id="utrd_keg"       long_name="i-trend: KE gradient         or hor. adv."       unit="m/s^2"                        />
     <field id="utrd_rvo"       long_name="i-trend: relative  vorticity or metric term"     unit="m/s^2"                        />
     <field id="utrd_pvo"       long_name="i-trend: planetary vorticity"                    unit="m/s^2"                        />
     <field id="utrd_zad"       long_name="i-trend: vertical  advection"                    unit="m/s^2"                        />
     <field id="utrd_udx"       long_name="i-trend: U.dx[U]"                                unit="m/s^2"                        />
     <field id="utrd_ldf"       long_name="i-trend: lateral   diffusion"                    unit="m/s^2"                        />
     <field id="utrd_zdf"       long_name="i-trend: vertical  diffusion"                    unit="m/s^2"                        />
     <field id="utrd_tau"       long_name="i-trend: wind stress "                           unit="m/s^2"   grid_ref="grid_U_2D" />
     <field id="utrd_bfr"       long_name="i-trend: bottom friction (explicit)"             unit="m/s^2"                        />   
     <field id="utrd_bfri"      long_name="i-trend: bottom friction (implicit)"             unit="m/s^2"                        />   
     <field id="utrd_tot"       long_name="i-trend: total momentum trend before atf"        unit="m/s^2"                        />   
     <field id="utrd_atf"       long_name="i-trend: asselin time filter trend"              unit="m/s^2"                        />   
   </field_group>

   <field_group id="trendV" grid_ref="grid_V_3D">
     <!-- variables available with ln_dyn_trd -->
     <field id="vtrd_hpg"       long_name="j-trend: hydrostatic pressure gradient"          unit="m/s^2"                        />
     <field id="vtrd_spg"       long_name="j-trend: surface     pressure gradient"          unit="m/s^2"                        />
     <field id="vtrd_spgexp"    long_name="j-trend: surface pressure gradient (explicit)"   unit="m/s^2"                        />
     <field id="vtrd_spgflt"    long_name="j-trend: surface pressure gradient (filtered)"   unit="m/s^2"                        />
     <field id="vtrd_keg"       long_name="j-trend: KE gradient         or hor. adv."       unit="m/s^2"                        />
     <field id="vtrd_rvo"       long_name="j-trend: relative  vorticity or metric term"     unit="m/s^2"                        />
     <field id="vtrd_pvo"       long_name="j-trend: planetary vorticity"                    unit="m/s^2"                        />
     <field id="vtrd_zad"       long_name="j-trend: vertical  advection"                    unit="m/s^2"                        />
     <field id="vtrd_vdy"       long_name="i-trend: V.dx[V]"                                unit="m/s^2"                        />
     <field id="vtrd_ldf"       long_name="j-trend: lateral   diffusion"                    unit="m/s^2"                        />
     <field id="vtrd_zdf"       long_name="j-trend: vertical  diffusion"                    unit="m/s^2"                        />
     <field id="vtrd_tau"       long_name="j-trend: wind stress "                           unit="m/s^2"   grid_ref="grid_V_2D" />
     <field id="vtrd_bfr"       long_name="j-trend: bottom friction (explicit)"             unit="m/s^2"                        />   
     <field id="vtrd_bfri"      long_name="j-trend: bottom friction (implicit)"             unit="m/s^2"                        />   
     <field id="vtrd_tot"       long_name="j-trend: total momentum trend before atf"        unit="m/s^2"                        />   
     <field id="vtrd_atf"       long_name="j-trend: asselin time filter trend"              unit="m/s^2"                        />   
   </field_group>


    <!-- 
============================================================================================================
                                        Definitions for iodef_demo.xml
============================================================================================================
    -->

    <field_group id="TRD" >
      <field field_ref="ttrd_totad_li"   name="opottempadvect"  />
      <field field_ref="ttrd_iso_li"     name="opottemppmdiff"  />
      <field field_ref="ttrd_zdfp_li"    name="opottempdiff"  />
      <field field_ref="ttrd_evd_li"     name="opottempevd" />
      <field field_ref="strd_evd_li"     name="osaltevd" />
      <field field_ref="ttrd_qns_li"     name="opottempqns"  />
      <field field_ref="ttrd_qsr_li"     name="rsdoabsorb" operation="accumulate" />
      <field field_ref="strd_totad_li"   name="osaltadvect" />
      <field field_ref="strd_iso_li"     name="osaltpmdiff"  />
      <field field_ref="strd_zdfp_li"    name="osaltdiff" />
    </field_group>
    
    <field_group id="mooring" >
      <field field_ref="toce"         name="thetao"   long_name="sea_water_potential_temperature"      />
      <field field_ref="soce"         name="so"       long_name="sea_water_salinity"                   />
      <field field_ref="uoce"         name="uo"       long_name="sea_water_x_velocity"                 />
      <field field_ref="voce"         name="vo"       long_name="sea_water_y_velocity"                 />
      <field field_ref="woce"         name="wo"       long_name="sea_water_z_velocity"                 />
      <field field_ref="avt"          name="difvho"   long_name="ocean_vertical_heat_diffusivity"      />
      <field field_ref="avm"          name="difvmo"   long_name="ocean_vertical_momentum_diffusivity"  />
      
      <field field_ref="sst"          name="tos"      long_name="sea_surface_temperature"                       />
      <field field_ref="sst2"         name="tossq"    long_name="square_of_sea_surface_temperature"             />
      <field field_ref="sstgrad"      name="tosgrad"  long_name="module_of_sea_surface_temperature_gradient"    />
      <field field_ref="sss"          name="sos"      long_name="sea_surface_salinity"                          />
      <field field_ref="ssh"          name="zos"      long_name="sea_surface_height_above_geoid"                />
      <field field_ref="empmr"        name="wfo"      long_name="water_flux_into_sea_water"                     />
      <field field_ref="qsr"          name="rsntds"   long_name="surface_net_downward_shortwave_flux"           />
      <field field_ref="qt"           name="tohfls"   long_name="surface_net_downward_total_heat_flux"          />
      <field field_ref="taum"                                                                                   />
      <field field_ref="20d"                                                                                    />
      <field field_ref="mldkz5"                                                                                 />
      <field field_ref="mldr10_1"                                                                               />
      <field field_ref="mldr10_3"                                                                               />
      <field field_ref="mldr0_1"                                                                                />
      <field field_ref="mldr0_3"                                                                                />
      <field field_ref="mld_dt02"                                                                               />
      <field field_ref="topthdep"                                                                               />
      <field field_ref="pycndep"                                                                                />
      <field field_ref="tinv"                                                                                   />
      <field field_ref="depti"                                                                                  />
      <field field_ref="BLT"          name="blt"      long_name="barrier_layer_thickness"                       />
      <field field_ref="utau"         name="tauuo"    long_name="surface_downward_x_stress"                     />
      <field field_ref="vtau"         name="tauvo"    long_name="surface_downward_y_stress"                     />
    </field_group>

    <field_group id="groupT" >
      <field field_ref="toce"         name="thetao"   long_name="sea_water_potential_temperature"               />
      <field field_ref="soce"         name="so"       long_name="sea_water_salinity"                            />
      <field field_ref="sst"          name="tos"      long_name="sea_surface_temperature"                       />
      <field field_ref="sst2"         name="tossq"    long_name="square_of_sea_surface_temperature"             />
      <field field_ref="sss"          name="sos"      long_name="sea_surface_salinity"                          />
      <field field_ref="ssh"          name="zos"      long_name="sea_surface_height_above_geoid"                />
      <field field_ref="empmr"        name="wfo"      long_name="water_flux_into_sea_water"                     />
      <field field_ref="qsr"          name="rsntds"   long_name="surface_net_downward_shortwave_flux"           />
      <field field_ref="qt"           name="tohfls"   long_name="surface_net_downward_total_heat_flux"          />
      <field field_ref="taum"                                                                                   />
      <field field_ref="20d"                                                                                    />
      <field field_ref="mldkz5"                                                                                 />
      <field field_ref="mldr10_1"                                                                               />
      <field field_ref="mldr10_3"                                                                               />
      <field field_ref="mld_dt02"                                                                               />
      <field field_ref="topthdep"                                                                               />
      <field field_ref="pycndep"                                                                                />
      <field field_ref="tinv"                                                                                   />
      <field field_ref="depti"                                                                                  />
      <field field_ref="BLT"          name="blt"      long_name="Barrier Layer Thickness"                       />
    </field_group>
    
    <field_group id="groupU" >
      <field field_ref="uoce"         name="uo"      long_name="sea_water_x_velocity"      />
      <field field_ref="utau"         name="tauuo"   long_name="surface_downward_x_stress" />
    </field_group>
    
    <field_group id="groupV" >
      <field field_ref="voce"         name="vo"      long_name="sea_water_y_velocity"      />
      <field field_ref="vtau"         name="tauvo"   long_name="surface_downward_y_stress" />
    </field_group>
    
    <field_group id="groupW" >
      <field field_ref="woce"         name="wo"       long_name="ocean vertical velocity"  />
    </field_group>

    <field_group  id="1h_grid_U_tmb" grid_ref="grid_U_2D" operation="instant">
      <field id="top_u"           name="vozocrtx_top"  unit="m/s"  />
      <field id="mid_u"           name="vozocrtx_mid"  unit="m/s"  />
      <field id="bot_u"           name="vozocrtx_bot"  unit="m/s"  />
      <field id="baro_u"          name="vobtcrtx"      unit="m/s"  />
    </field_group>

    <field_group  id="1h_grid_V_tmb" grid_ref="grid_V_2D" operation="instant">
      <field id="top_v"           name="vomecrty_top"  unit="m/s"  />
      <field id="mid_v"           name="vomecrty_mid"  unit="m/s"  />
      <field id="bot_v"           name="vomecrty_bot"  unit="m/s"  />
      <field id="baro_v"          name="vobtcrty"      unit="m/s"  />
    </field_group>

    <!-- 25h diagnostic output -->
    <field_group id="25h_grid_T" grid_ref="grid_T_3D" operation="instant">
      <field id="temper25h"         name="potential temperature 25h mean"    unit="degC" />
      <field id="tempis25h"         name="insitu temperature 25h mean"    unit="degC" />
      <field id="salin25h"          name="salinity 25h mean"                 unit="psu"  />
      <field id="ssh25h"            name="sea surface height 25h mean"  grid_ref="grid_T_2D"      unit="m"    />
    </field_group>

    <field_group id="25h_grid_U" grid_ref="grid_U_3D" operation="instant" >
      <field id="vozocrtx25h"         name="i current 25h mean"    unit="m/s"   />
    </field_group>

    <field_group id="25h_grid_V" grid_ref="grid_V_3D" operation="instant">
      <field id="vomecrty25h"         name="j current 25h mean"    unit="m/s"    />
    </field_group>

    <field_group id="25h_grid_W" grid_ref="grid_W_3D" operation="instant">
      <field id="vovecrtz25h"         name="k current 25h mean"                 unit="m/s"      />
      <field id="avt25h"              name="vertical diffusivity25h mean"       unit="m2/s" />
      <field id="avm25h"              name="vertical viscosity 25h mean"        unit="m2/s" />
      <field id="tke25h"              name="turbulent kinetic energy 25h mean" />
      <field id="mxln25h"             name="mixing length 25h mean"             unit="m" />
    </field_group>

    <!-- 
============================================================================================================
    -->
    <!-- output variables for my configuration (example) --> 
    
    <field_group id="myvarOCE" >
      <!-- grid T --> 
      <field field_ref="e3t"          name="e3t"      long_name="vertical scale factor"           />
      <field field_ref="sst"          name="tos"      long_name="sea_surface_temperature"         />
      <field field_ref="sss"          name="sos"      long_name="sea_surface_salinity"            />
      <field field_ref="ssh"          name="zos"      long_name="sea_surface_height_above_geoid"  />
      
      <!-- grid U --> 
      <field field_ref="e3u"          name="e3u"     long_name="vertical scale factor"            />
      <field field_ref="ssu"          name="uos"     long_name="sea_surface_x_velocity"           />
      
      <!-- grid V --> 
      <field field_ref="e3v"          name="e3v"     long_name="vertical scale factor"            />
      <field field_ref="ssv"          name="vos"     long_name="sea_surface_y_velocity"           />     
    </field_group>    

    <!--============================-->
    <!--  CONSERVATION diagnostics  -->
    <!--============================-->
    <!-- BE CAREFUL: this group (OCE_budget) cannot be called in file_def.xml as such (unless nn_fsbc=1)
                     If doing so, the last output (in time) of the netcdf file 
	             would be corrupted (NaN values). However calling each of these
	             variables directly in the file_def.xml works. It is probably 
		     because there is a mix up of sbc variables with other variables
    -->    
    <field_group id="OCE_budget"        grid_ref="grid_T_2D" >
      <field field_ref="sst"                 name="tos"          />
      <field field_ref="sss"                 name="sos"          />
      <field field_ref="ssh"                 name="zos"          />
      <!-- mass flux -->
      <field field_ref="empmr"               name="empmr"        />
      <field field_ref="runoffs"             name="runoffs"      />
      <field field_ref="emp_ice"             name="emp_ice"      />
      <field field_ref="emp_oce"             name="emp_oce"      />
      <field field_ref="iceshelf_cea"        name="iceshelf"     />
      <field field_ref="iceberg_cea"         name="iceberg"      />
      <field field_ref="calving_cea"         name="calving"      />
      <!-- <field field_ref="berg_floating_melt"  name="calving" /> -->
      <field field_ref="precip"              name="precip"       />
      <field field_ref="snowpre"             name="snowpre"      />
      <field field_ref="rain"                name="rain"         />
      <field field_ref="evap_ao_cea"         name="evap_ao"      />
      <field field_ref="subl_ai_cea"         name="subl_ai"      />
      <field field_ref="snow_ai_cea"         name="snow_ai"      />
      <field field_ref="snow_ao_cea"         name="snow_ao"      />
      <!-- heat flux -->
      <field field_ref="qsr"                 name="qsr"          />
      <field field_ref="qns"                 name="qns"          />
      <field field_ref="qt_oce"              name="qt_oce"       />
      <field field_ref="qemp_oce"            name="qemp_oce"     />
      <field field_ref="hflx_rain_cea"       name="hflx_rain"    />
      <field field_ref="hflx_evap_cea"       name="hflx_evap"    />
      <field field_ref="hflx_snow_cea"       name="hflx_snow"    />
      <field field_ref="hflx_snow_ao_cea"    name="hflx_snow_ao" />
      <field field_ref="hflx_snow_ai_cea"    name="hflx_snow_ai" />
      <field field_ref="hflx_rnf_cea"        name="hflx_rnf"     />
      <field field_ref="hflx_icb_cea"        name="hflx_icb"     />
      <field field_ref="hflx_isf_cea"        name="hflx_isf"     />
      <!-- salt flux (includes ssr) -->
      <field field_ref="saltflx"             name="saltflx"      />
      <field field_ref="sflx_rnf_cea"        name="sflx_rnf"     />
      <!-- relaxation and damping -->
      <field field_ref="hflx_ssr_cea"        name="hflx_ssr"     />
      <field field_ref="vflx_ssr_cea"        name="vflx_ssr"     />
      <field field_ref="sflx_ssr_cea"        name="sflx_ssr"     />
      <field field_ref="hflx_dmp_cea"        name="hflx_dmp"     />
      <field field_ref="sflx_dmp_cea"        name="sflx_dmp"     />
      <field field_ref="hflx_fwb_cea"        name="hflx_fwb"     />
      <field field_ref="vflx_fwb_cea"        name="vflx_fwb"     />
    </field_group>

    <field_group id="OCE_globalbudget"  grid_ref="grid_scalar" >
      <field field_ref="voltot"              name="scvoltot"     />
      <field field_ref="saltot"              name="scsaltot"     />
      <field field_ref="temptot"             name="sctemtot"     />
    </field_group>

   </field_definition>
