ALADIN developments in Toulouse during the third quarter of 1999

From a statistical point of vue, the comments of the previous quarter is still available ...

"During the last months, GMAP offices have given to all ALADIN visitors and GMAP people the impression that they were less crowded than usual. The effort in Toulouse during this quarter was the smaller one for years !..." ...this was for the second quarter ... for the third quarter it is even worse !..

TLSE.gif

"Less than 30 persons (and less than 60% of visitors) coming from 8 countries on only 3 different fundings" for the second quarter... and less than "less" for this quarter. Many thanks to Elisabeth Gerard who joined ALADIN team in GMAP (she replaces Patrick Le Moigne) ... without her, statistics would have been even worse !...

... but with ALATNET (if ALATNET runs of course), ... it will be much better !..

1. Main events in Toulouse this quarter

Nothing else to report except was is already presented in the other parts of this Newsletter.

2. Other visitors research or development studies that ended during this quarter

End of second workshop on variational configurations in ALADIN with the participation of R. Bubnova, C. Fischer, A. Horanyi, W. Sadiki, M. Siroka and C. Soci. See article in the previous Newsletter. Thanks to the work of two students, Philippe Marguinaud and Youssef Moudden, for the ARPEGE part and Vladimir Ivanovici for the ALADIN part and the diagnostic tools, a new parameterization of the envelope orography has been introduced. It remains close to the mean orography at the largest scales so as to better preserve the global mass, and close to the previous envelope at small scales so as to keep the blocking effect of enhanced mountains. This is achieved in configuration 923 by adding a spectral term to the cost function used in the minimization of orography. André Simon is currently testing whether this new orography could be successfully coupled with the "lift" parameterization proposed by F. Lott and already used in the ARPEGE/Climat code.

3. Other research or development studies by the Toulouse permanent staff

Chagal : new version of Chagal on VPP (dino) and SUN (ext4) arrived! : a new parameter gives the possibility to choose the format of the output file (see new documentation on ALADIN web: http://www.cnrm.meteo.fr/aladin/concept/documentation.html )

for more info please run : chagal -?

Some improvments have been introduced in Full-Pos (see article about bogussing) and a new documentation is available both on public ftp (poscript file, see annexe) and on-line on ALADIN wed server (http://cnrm.meteo.fr/aladin/concept/documentation.html ).



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