Running ADAS
DAS assimilation and forecast runs
Select DAS experiment to run
First, we choose a DAS run to simulate. For a list of runs
$ ls ~dao_ops
on NCCS discover. As an example, we choose the run d591_fpit (for more about GMAO products, please see https://gmao.gsfc.nasa.gov/products)
Look for ATAG in file ~dao_ops/d591_fpit/run/FVDAS_Run_Config
$ grep ATAG ~dao_ops/d591_fpit/run/FVDAS_Run_Config setenv ATAG GEOSadas-5_9_1_p7
This gives us the model tag.
Build model
$ cvs co -P -r GEOSadas-5_9_1_p7 -d g591p7 GEOSadas-5_9 $ cd g591p7/src $ ./parallel_build.csh
Setup experiment (Run fvsetup)
Run fvsetup from the bin directory (g591p7/Linux/bin) with the following options (default value chosen for ones not mentioned): [For now we choose the default value for FVICS as well]
AGCM Resolution? [b72] > C180
OGCM Resolution? [c34] > f34
OBSERVING SYSTEM CLASSES? > ncep_prep_bufr
A pdf of the entire fvsetup session is provided at the end of this page.
After saving these inputs, move to the experiment directory
$ cd $NOBACKUP/g591p4_d72/run
At this point, one can edit CAP.rc.tmpl to run 12-hour experiment. Also, one can turn on MAPL timers and memutils
JOB_SGMT: 0 120000 NUM_SGMT: 1 MAPL_ENABLE_TIMERS: YES MAPL_ENABLE_MEMUTILS: YES
To run one segment each of GSIsa.x and GEOSgcm.x add 'exit' before 'PART IV - Next PBS Job Segment' in g5das.j.
Data Assimilation experiment
$ cd $NOBACKUP/g591p4_d72/run $ qsub g5das.j
g5das creates a scratch directory $NOBACKUP/fvwork.xxxx and runs the experiment there. After the initial setup, GSIsa.x is run with output written to ana.log followed by GEOSgcm.x which writes its output to stdout and fvpsas.log.