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Baseline WCDA
fetch/merge the branch Aaditya (The latest commit should be at least cc1fd42 by running git log).
Ensure the following positions are correct:
-
run/run_fcst:for y in range(1956,2013+1): -
letkf-mom/obs/obsop.f90:DO_REMOVE_65N = .false.
If they don't show the values here, then your branch Aaditya is not up-to-date.
We need CO2 files after 2010. If you have copied CFS fixed files to your own directory before, enter the directory CFSv2-LETKF.data/fix/fix_am and copy latest CO2 files
cp /backup2/cheng/shared/CFSv2-LETKF.data/fix_am/global_co2historicaldata_201* .
If you haven't copied fixed files, you can simply copy the whole directory
cp -r /backup2/cheng/shared/CFSv2-LETKF.data your_desired_location
| obs type | frequency | range | location |
|---|---|---|---|
| atm obs (prepBUFR) | 6hr | 00UTC 20100101 to 18UTC 20100701 (continuing) | /backup2/chen/shared/wcda_obs/atm_prepbufr |
| ocn obs (tsprofile+L4_GHRSST) | daily | 20100101 to 20101231 | /backup2/chen/shared/wcda_obs/cfs_ocn |
One full cycle in each month is saved. There are 12 files (1 flux, 2 atm, 9 ocn) for each member in 1-cycle.
| cycle saved | description | location |
|---|---|---|
| 2010010100 | IC with 10-day SST nudging after 4-month free-run | /backup2/chen/shared/anal_free40_sstnudge10 |
| 2010020100 | WCDA analysis ens | /backup2/chen/shared/wcda |
| 2010030100 | WCDA analysis ens | /backup2/chen/shared/wcda |
| 2010040100 | WCDA analysis ens | /backup2/chen/shared/wcda |
| 2010050100 | WCDA analysis ens | /backup2/chen/shared/wcda |
| 2010060100 | WCDA analysis ens | /backup2/chen/shared/wcda |
| 2010070100 | WCDA analysis ens | /backup2/chen/shared/wcda |
| 2010073106 | WCDA analysis ens(skip ocnDA) | /backup2/chen/shared/wcda |
| 2010080100 | WCDA analysis ens | /backup2/chen/shared/wcda |
| continuing | pause at 2010080200 |
configuration files for CFS and LETKF are stored at /backup2/chen/shared/wcda_cfg. Note we disable SST nudging and use 30-day SSS nudging (see nemo.nml)
These steps should be repeated every time you want to launch a new experiment. Here assume that we want to perform a 40-member WCDA under directory /backup2/cheng/CFSv2-LETKF/DATA/wcda
Under directory run, run
source ../config/setenv.sh
Use script run/init_copy to prepare a directory required by CFS-LETKF. Don't forget adding the option --copyflux
./init_copy --copyflux --source /backup2/chen/shared/anal_free40_sstnudge10 --ares 126 2010010100 /backup2/cheng/CFSv2-LETKF/DATA/wcda 40
will generate the experiment directory /backup2/cheng/CFSv2-LETKF/DATA/wcda by using 40 members from /backup2/chen/shared/anal_free40_sstnudge10.
Update LETKF and CFS namelists
cp /backup2/chen/shared/wcda_cfg/* /backup2/cheng/CFSv2-LETKF/DATA/wcda/cfg/.
Open nemo.nml and ensure the SST nudging is turned off and SSS nudging is 30 days.
Use the script lsf_cycle to launch 1-month experiment
nohup ./lsf_cycle --aobs /backup2/cheng/CFSv2-LETKF/DATA/obs/atm_prepbufr --oobs /backup2/cheng/CFSv2-LETKF/DATA/obs/cfs_ocn/CFSOBS --ares 126 --clear 24 --mem 40 /backup2/cheng/CFSv2-LETKF/DATA/wcda 2010010100 2010020100 &
You can use the script save_cycle.