umd-aosc / cfsv2-letkf

Strongly Coupled LETKF applied to the Climate Forecast System version 2 (CFSv2)

CFSV2-LETKF

Strongly Coupled LETKF applied to the Climate Forecast System version 2 (CFSv2). Default settings use the T62/L64 version of GFS and the 0.5 degree MOM. Fix files, and CFSR data must be obtained separately. Information about how to run most of the scripts can be shown by running with the -h flag, (e.g. ./util/get_cfsr -h

All further documentation, including how to compile and run, are contained on the wiki: GitHub wiki for CFSv2-LETKF

####Directory Structure

• cfs - unmodified NCEP code for the CFSv2
• common - python modules and fortran code used by several other programs
• config - site specific configuration for compiling and running
• letkf-gfs - GFS-LETKF, atmospheric data assimilation
• letkf-mom - MOM-LETKF, oceanic data assimilation
• lib-ncep - support libraries from NCEP required for compiling other executables
• run - scripts to initialize and run the CFS / data assimilation cycle
• util - other utility programs required by the CFS and/or GFS-LETKF code

cfsv2-letkf's Issues

Different directory structure for nature and CFSR

It seems that CFSR downloads are stored in DATA/CFSR/T126/YYYY/YYYYMM/YYMMDD/YYMMDDHH.{sig/sfc} while nature run is stored as DATA/nature/YYYY/YYYYMM/YYMMDD/YYMMDDHH/YYMMDDHH.{sfc/sig}. This creates an issue when using the run/init_cycle as the glob function needs a different pathname description. When using CFSR data to initialize change line 118 of init_cycle from adates = glob(args.initGFS+'/////{}.sig'.format(args.date[-2:])) to adates = glob(args.initGFS+'////*{}.sig'.format(args.date[-2:]))