diff --git a/prep_nem_forcings/eraint/orca1/prep_nem_forcings/eraint/orca1/Alternaive_forcing_method b/prep_nem_forcings/eraint/orca1/prep_nem_forcings/eraint/orca1/Alternaive_forcing_method
new file mode 100644
index 0000000000000000000000000000000000000000..b387ad4bfcbd93123a44522f4f4ac269ffc28c26
--- /dev/null
+++ b/prep_nem_forcings/eraint/orca1/prep_nem_forcings/eraint/orca1/Alternaive_forcing_method
@@ -0,0 +1,39 @@
+Steps to generate the ERA_int files to be interpolated
+
+1.
+
+cd /esarchive/scratch/jacosta/TMP/Interp_ERA/input_ERAInt
+
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/6hourly/uas/uas_2017* -shifttime,+365d /esarchive/recon/ecmwf/erainterim/6hourly/uas/uas_201612.nc uas_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/6hourly/vas/vas_2017* -shifttime,+365d /esarchive/recon/ecmwf/erainterim/6hourly/vas/vas_201612.nc vas_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/6hourly/tas/tas_2017* -shifttime,+365d /esarchive/recon/ecmwf/erainterim/6hourly/tas/tas_201612.nc tas_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/6hourly/tdps/tdps_2017* -shifttime,+365d /esarchive/recon/ecmwf/erainterim/6hourly/tdps/tdps_201612.nc tdps_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/6hourly/psl/psl_2017* -shifttime,+365d /esarchive/recon/ecmwf/erainterim/6hourly/psl/psl_201612.nc psl_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/daily_mean/rsds_s12-24h/rsds_2017* -shifttime,+2y /esarchive/recon/ecmwf/erainterim/daily_mean/rsds_s12-24h/rsds_201512.nc rsds_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/daily_mean/rlds_s12-24h/rlds_2017* -shifttime,+2y /esarchive/recon/ecmwf/erainterim/daily_mean/rlds_s12-24h/rlds_201512.nc rlds_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/monthly_mean/prsn_s12-24h/prsn_2017* -shifttime,+1mon /esarchive/recon/ecmwf/erainterim/monthly_mean/prsn_s12-24h/prsn_201711.nc prsn_2017.nc
+cdo -b 64 mergetime /esarchive/recon/ecmwf/erainterim/monthly_mean/prlr_s12-24h/prlr_2017* -shifttime,+1y /esarchive/recon/ecmwf/erainterim/monthly_mean/prlr_s12-24h/prlr_201612.nc prlr_2017.nc
+
+2.
+
+cdo mul -chname,tas,t2 -remapbil,ORCA1_mask.nc  tas_2017.nc ORCA1_mask.nc ../output_ORCA1/t2_eraint_2017.nc
+cdo mul -chname,psl,psl -remapbil,ORCA1_mask.nc  psl_2017.nc ORCA1_mask.nc ../output_ORCA1/psl_eraint_2017.nc
+cdo mul -chname,tdps,tdps -remapbil,ORCA1_mask.nc  tdps_2017.nc ORCA1_mask.nc ../output_ORCA1/tdps_eraint_2017.nc
+cdo mul -chname,uas,u10 -remapbil,ORCA1_U_mask.nc  uas_2017.nc ORCA1_mask.nc ../output_ORCA1/u10_eraint_2017_no_Cor.nc
+cdo mul -chname,vas,v10 -remapbil,ORCA1_V_mask.nc  vas_2017.nc ORCA1_mask.nc ../output_ORCA1/v10_eraint_2017_no_Cor.nc
+cdo mul -chname,rsds,qsw -remapbil,ORCA1_mask.nc  rsds_2017.nc ORCA1_mask.nc ../output_ORCA1/qsw_eraint_2017.nc
+cdo mul -chname,rlds,qlw -remapbil,ORCA1_mask.nc  rlds_2017.nc ORCA1_mask.nc ../output_ORCA1/qlw_eraint_2017.nc
+cdo mulc,1000 -mul -chname,prlr,precip -remapbil,ORCA1_mask.nc  prlr_2017.nc ORCA1_mask.nc ../output_ORCA1/precip_eraint_2017.nc
+cdo mulc,1000 -mul -chname,prsn,snow -remapbil,ORCA1_mask.nc  prsn_2017.nc ORCA1_mask.nc ../output_ORCA1/snow_eraint_2017.nc
+
+3.
+cd ../output_ORCA1
+
+4.
+Run SOSIE to generate the interpolated fields for V10 and U10
+
+5.
+Run compX.sh to convert all files from netcdf4 to netcdf3, otherwise NEMO won't read them
+
+6.
+Run perturbation methods for V10 and U10 (if needed).