2.2.1. In offline mode

Latest update : 17 October.

In this case, several types of files can be used:

ASCII files, not efficient in term of storage, but completely portable.
TEXTE files, not efficient in term of storage, but completely portable.
NETCDF files, that can be used by the program code "OFFLIN".
BINARY files, increases the efficiency of the system.
LFI files, increases the efficiency of the system. This special format is used in meso-NH and Arome models for surface fields.
FA files, This special format is used for Arpege and Aladin models.

Currently, PGD and PREP steps may be done using ASCII, LFI, FA or NETCDF files, and also the run produces time series of each variable (prognostic or diagnostic) in any of the formats listed above files.

The namelists are all included in the namelist file named OPTIONS.nam

Articles in this section

2.2.1.1. namelist NAM_IO_OFFLINE

This namelist is the main namelist used in the off-line mode.
Fortran name Fortran type values default value
CSURF_FILETYPE string of 6 characters "FA " , "ASCII ", "LFI ","NC " "ASCII "
CTIMESERIES_FILETYPE string of 6 characters "NETCDF", (…)
2.2.1.2. namelist NAM_LAND_USE

This namelist is needed when LLAND_USE = .TRUE. (NAM_IO_OFFLINE). The file referenced in this namelist has to be formatted as a Surfex PREP file and to contain at least 13 record: DIM_FULL, VEGTYPE_P1, .... VEGTYPE_P12. If CFTYP_VEGTYPE = ’OFFLIN’, the file is a NETCDF file and its name needs to (…)
2.2.1.3. Namelist NAM_ZS_FILTER

Fortran name Fortran type values default value NZSFILTER integer 1 NZSFILTER : number of iterations of the spatial filter applied to smooth the orography (integer, 1 iteration removes the signal, 50% of the signal, 25% of the signal, etc
2.2.1.4. Namelist NAM_NACVEG

declaration of keys for ISBA assimilation scheme (2DVAR, Bouyssel et al.)
Fortran name Fortran type values default value NECHGU integer 6 RCLIMCA real 0. RCLISST real 0.05 SIGH2M0 real 0.1 SIGT2M0 real 1.0 SIGWG0 (…)