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initial_conditions:oceanic

Shared in EC-Earth consortium

Brief description

Please note that Ec-Earth2 includes NEMO2.2 and Ec-Earth3 includes NEMO3.3

ID OCEAN MODEL GRID FIRST LAST INTERVAL (MONTH) MEMBERS Comments References
s4 NEMO3.6 ORCA1L46 19600101 20160701 all months fc0 - f4 ocean reanalysis - mask corrected for ORCA1 - vertically interpolated and extrapolated for ORCA1L75 Mogensen et al(2011), Balmaseda et al (2012)
s4 NEMO2.2 / NEMO3.2 / NEMO3.3 ORCA1 and ORCAL46 19580101 20141201 02, 05, 08, 11 fc0 - f4 ocean reanalysis - mask corrected for ORCA1 - vertically interpolated and extrapolated for ORCA1L46 and ORCA1L75 Mogensen et al(2011), Balmaseda et al (2012)
GLORYS2V1 NEMO3.3 ORCA1L46 19921101 20091101 05,11 fc0 Interpolated initial conditions from an ocean reanalysis Ferry et al (2010)
GLORYS2V1 NEMO3.3 ORCA025L46 19921101 20091101 05,11 fc0 Interpolated initial conditions from an ocean reanalysis Ferry et al (2010)
GLORYS2V1 NEMO3.3 ORCA025L75 19921101 20091101 05,11 fc0 ocean reanalysis Ferry et al (2010)
GLOSEA5 NEMO3.3 ORCA025L75 19930430 20131031 05,11 fc0 ocean reanalysis, extrapolated horizontally to match the mask of the NEMO version we use Mogensen et al (2009)
GLOSEA5 NEMO3.3 ORCA1L46 19930430 20131031 05,11 fc0 Interpolated initial conditions from an ocean reanalysis Mogensen et al (2009)
ORAP5 NEMO3.3 ORCA025L75 19790430 20131031 05,11 fc0 ocean reanalysis Hao et al (2015)
ORAP5 NEMO3.3 ORCA1L46 19790430 20131031 05,11 fc0 Interpolated initial conditions from an ocean reanalysis Hao et al (2015)
m01x NEMO3.3 ORCA1L46 19921101 20091101 02,05,08,11 fc0 Initial conditions produced by nudging the ocean component in EC-Earth3.0.1 toward the monthly T and S from GLORYS2V1 ocean reanalysis no reference yet
m01w NEMO3.3 ORCA025L46 19921101 20091101 02,05,08,11 fc0 Initial conditions produced by nudging the ocean component in EC-Earth3.0.1 toward the monthly T and S from GLORYS2V1 ocean reanalysis no reference yet
m01u NEMO3.3 ORCA025L75 19921101 20091101 02,05,08,11 fc0 Initial conditions produced by nudging the ocean component in EC-Earth3.0.1 toward the monthly T and S from GLORYS2V1 ocean reanalysis no reference yet
official_repro NEMO3.6 ORCA01L75 19500101 19500101 fc00-fc04 Initial conditions for the official EC-Earth reproducibility test https://github.com/plesager/ece3-postproc#reproducibility-test
a1e1/a1ue NEMO3.6 ORCA1 19600101 20151201 all fc00-fc045-category sea ice product using DFS5.2 surface forcing fields, surface restoring and subsurface nudging to ORAS4 with EC-Earth3.2 (NEMO-LIM only sims). Member fc00 should be taken from a1ue and members fc01 to fc04 should be taken from a1e1. no reference
a1n1 NEMO3.6 ORCA025 19600101 20151201 all fc04-fc005-category sea ice product using DFS5.2 surface forcing fields, surface restoring and subsurface nudging to ORAS5 with EC-Earth3.2 (NEMO-LIM only sims). In progress
a22b NEMO3.6 ORCA1 20100101 20181201 all fc00-fc045-category sea ice product using ERA-Interim surface forcing fields, surface restoring and subsurface nudging to ORAS4 with EC-Earth3.2 (NEMO-LIM only sims). no reference
a2fd NEMO3.6 ORCA1 20180101 20191201 all fc01-fc055-category sea ice product using ERA5 surface forcing fields, surface restoring and subsurface nudging to ORAS5 with EC-Earth3.2 (NEMO-LIM only sims). no reference

Need for new ocean initial conditions

These are ranked by priority :

1) ORAS4 ORCA1L75 configuration for 1958 to present

2) GLORYS2v1 ORCA1L75 configuration for 1993 to 2009

3) ORAS4 all configurations whole period

4) GLORYS2V3 all configurations whole period

References

Balmaseda M.A., Mogensen K.S., Weaver A.T., 2012, Evaluation of the ECMWF Ocean Reanalysis ORAS4. Quart J Roy Meteor Soc DOI 10.1002/qj.2063.

Ferry N et al., 2010, Mercator global eddy permitting ocean reanalysis GLORYS1v1: description and results. Mercator Ocean Quart. Newsl, 36, 15-27.

Mogensen K.S., Balmaseda M.A., Weaver A., 2011, The NEMOVAR ocean data assimilation as implemented in the ECMWF ocean analysis for system 4. ECMWF Technical Memorandum, 668.

Mogensen K.S., Balmaseda M.A., Weaver A., Martin M.J., Vidard A., 2009, NEMOVAR: A variational data assimilation system for the NEMO ocean model. ECMWF newsletter.

Hao Z., Balmaseda M. A., Mogensen K., 2015, The new eddy-permitting ORAP5 ocean reanalysis: description, evaluation and uncertainties in climate signals. Climate Dynamics (2015): 1-21.

How_to_generate_new_ocean_initial_conditions

ORAS4, ORCA1L42 and ORCA1L75

1. Update the ecaccess-certificate-create tool, which gives 7 days of access to ECMWF repositories.

2. clone the project https://earth.bsc.es/gitlab/ec-earthCPWG/Oce_IC.git

3. run export PYTHONPATH=$PYTHONPATH:$path_to_the_Oce_IC

4. go into the path_to_the_Oce_IC and run fetch_ORAS4.sh after filling the start dates you want to download from EMCWF and interpolate.

ORAP5, ORCA025L75

1. Update the ecaccess-certificate-create tool, which gives 7 days of access to ECMWF repositories.

2. git clone https://earth.bsc.es/gitlab/es/cpg_tools.git -b develop-eleftheria

2. Fetch the data locally (for example when in fat nodes)

cd cpg_tools/prep_restarts/generate_restarts_orap5_HR
sbatch dl_restarts.sh

3. Copy the data using the correct naming, in the repository of the initial conditions.

- Pay attention that for initial conditions for 1st May and 1st November we use the closest available dates in the original data, which are not always the same for each year.

- Also, we check the size in the original data, because some dates have half size, which means that they do not have all the variables we need for interpolation. For example, the restart of 19930430 is not suitable for using as initial condition:

ll /esnas/reconstructions/ecmwf/orap5/restarts/1993/*199304*

-rw-r--r-- 1 pbretonn Earth 9184196770 Oct  7 04:31 /esnas/reconstructions/ecmwf/orap5/restarts/1993/g0tx_19930401_00021960_restart.tar.gz
-rw-r--r-- 1 pbretonn Earth 9181022277 Oct  7 04:54 /esnas/reconstructions/ecmwf/orap5/restarts/1993/g0tx_19930406_00022320_restart.tar.gz
-rw-r--r-- 1 pbretonn Earth 9183757715 Oct  7 05:17 /esnas/reconstructions/ecmwf/orap5/restarts/1993/g0tx_19930411_00022680_restart.tar.gz
-rw-r--r-- 1 pbretonn Earth 9181268805 Oct  7 05:45 /esnas/reconstructions/ecmwf/orap5/restarts/1993/g0tx_19930416_00023040_restart.tar.gz
-rw-r--r-- 1 pbretonn Earth 9178049931 Oct  7 06:13 /esnas/reconstructions/ecmwf/orap5/restarts/1993/g0tx_19930421_00023400_restart.tar.gz
-rw-r--r-- 1 pbretonn Earth 9179559914 Oct  7 06:35 /esnas/reconstructions/ecmwf/orap5/restarts/1993/g0tx_19930426_00023760_restart.tar.gz
-rw-r--r-- 1 pbretonn Earth 4927336766 Oct  7 06:50 /esnas/reconstructions/ecmwf/orap5/restarts/1993/g0tx_19930430_00024048_restart.tar.gz

After the manual checking, we run the following script:

cd cpg_tools/prep_restarts/generate_restarts_orap5_HR
sbatch copy_orap5.sh
ORAP5, ORCA1L46

We use a software called SOSIE http://sosie.sourceforge.net/ to interpolate the data. We do the following steps (on fat nodes):

cd cpg_tools/prep_restarts/generate_restarts_orap5_LR
sbatch launchscript.sh 
GLOSEA5, ORCA025L75

We need to extrapolate the files to the mask we use locally. We do the following separately per year (here as example for 19940501, in the fat nodes)

 cd cpg_tools/prep_restarts/generate_restarts_gs5_HR/19940501
 sbatch 19940501.sh 
GLOSEA5, ORCA1L46

Similarly, as in ORAP5 ORCA1L46, we need to interpolate by using a software called SOSIE http://sosie.sourceforge.net/ to interpolate the data. We do the following steps on the fat nodes:

 sbatch launchscript.sh
initial_conditions/oceanic.txt · Last modified: 2020/02/13 15:34 by jacosta