Note: all ALATNET related R & D, representing the majority of the effort, is reported in ALATNET Newsletter. Here we sum up topics which are not referred as ALATNET ones for Prague centre.
See the report on operations.
Concerning the maintenance of the code, the main effort was concentrated on the non-hydrostatic dynamics. Some technical bugs were fixed in the recent development of the new vertical divergence prognostic variable (denoted d4) and were reported to the phasing team in May 2003. A development branch with a new formulation of the bottom boundary condition was prepared for the autumn phasing in Toulouse.
There was no data assimilation study made in the first semester of 2003; a study on blending is scheduled for the second semester. On the other hand quite a lot of effort was put on the installation of the Observational Data Base (ODB) software and on the validation of the related tools and model configurations at the level of CY25T1. This large volume of technical work is necessary in order to restart the data assimilation research. Before the end of June 2003 some tools and configurations were validated, such as to_odb, obsort, lamflag, shuffle , screening and CANARI analysis at least with one observation. But other needed configurations were not yet working or even tested, for example batodb, mandaodb, ALADIN 3d-var.