IO in the cycle 39 of ARPEGE/IFS (November 2012).

 Abstract:

This documentation gives an overview of the IO (file reading and writing) done in the most usual configurations. It is not a comprehensive documentation for all configurations but sticks to the main configurations used for example in the MF operational suite. When locating file reading and writing in the code one has realized that this is not so easy to find where these IO are done in the code. The aim of this documentation is more precisely to give, for a subset of configurations, the list of files read and written, where they are read or written in the code, the local name of the file and the logical unit involved.

 Contents:

 Introduction and purpose.
 Routines doing file reading/writing.
 ARPEGE configuration 1 with real data, no initialisation, with historical files writing (containing CFU and XFU fields).
 ALADIN configuration 1 with real data, no initialisation, with historical files writing (containing CFU and XFU fields).
 ARPEGE configuration 1 with real data, no initialisation, reading and writing restart files.
 ARPEGE configuration 1 with real data doing DFI initialisation (NEDFI=2).
 Non-927 off-line FULL-POS configuration with departure and arrival climatologies.
 927-type off-line FULL-POS configuration with departure and arrival climatologies.
 ARPEGE configuration 1 with real data, no initialisation, with non-927 in-line FULL-POS configuration with departure and arrival climatologies.
 ARPEGE configuration 1 with real data, no initialisation, and screening.
 ARPEGE configuration 1 with real data, no initialisation, and trajectory update.
 LTRAJHR=F incremental 4D-VAR minimisation (configuration 131).
 LTRAJHR=T incremental 4D-VAR minimisation (configuration 131).
 ARPEGE configuration 801 with real data used for sensitivity studies (LMINIM=F, LSIMOB=T).
 ARPEGE configuration 601 with real data like the MF-PEARP one.
 ARPEGE configuration 701 with real data for CANARI surface assimilation (cf. MF operational suite, LAEINC=T).
 ARPEGE configuration 901 to convert ECMWF MARS files into MF ARPEGE files.
 ARPEGE configuration 911 to provide dilatation/contraction matrices.
 ARPEGE configuration 923 to provide climatologic files (MF only).
 ARPEGE configuration 931 to provide SST files.
 ARPEGE configuration 932 to provide ice content files.
 References and internal notes.