ALADIN developments in Toulouse during the second quarter of 1999
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
!...
Less than 30 persons (and less than 60% of visitors) coming from 8 countries
on only 3 different fundings (Météo-France support, last
1998 ambassy support and LACE funding) during this quarter. Their commun
effort doesn't reach 30 people.month !... but it was more dedicated
to development (no phasing during the quarter).
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Main events in Toulouse this quarter
See "Second workshop on variational configurations
in ALADIN".
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Other visitors research or development studies that ended during this quarter
Progress in scientific or technical aspects was rather the part of the
13 other ALADIN visitors :
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Adam Dziedzic studied the "Christmas Storm" (24/12/97) with ALADIN.
This case is considered as a classical example for the study of misforecasts
with respect to the initial conditions (analysis, assimilation cycle, coupling
data, ...). He examined first the respective parts of the domain extension
and the coupling files. This case was shown to be quite suitable for sensitivity
experiments and the first runs with the new configuration e801 were promising.
-
Olivier Latinne used the global FAO database, with a 5' resolution,
to improve the description of soil characteristics (depth, percentages
of sand and clay) in ARPEGE and ALADIN. He studied afterwards the impact
of this new data through some forecasts, and parallel assimilation experiments
over last November (in Toulouse then in Bruxelles).
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Josef Vivoda ported the preliminary vertical plane version of
ALADIN to cycle AL11 on VPP and managed to make it run in shared-memory
environment. He also designed new visualization tools. This work will be
finalized from Prague and will greatly alleviate studies in non-hydrostatic
dynamics, or in physics.
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Petra Smolikova achieved the coding and test of a new solution
to orographic resonance in semi-lagrangian dynamics. However its potential
benefits are completely spoilt by additional noise.
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Vladimir Pastircak and Jean-Marcel Piriou managed to merge the
latest contributions to the parameterization of convection and found some
consistent tunings.
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Other research or development studies by the Toulouse permanent staff
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While investigating the problems encountered in the design of
an ALADIN domain over Southern Pacific, Jean-Daniel Gril showed some problems
in the definition of ALADIN geometrical characteristics (EGGX package).
A mail was sent to all Partners describing some potential improvements.
PLEASE ANSWER WITHIN SEPTEMBER !
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The ALADIN web site offers more and more informations and facilities,
thanks to Patricia Pottier and Jean-Daniel Gril.
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Dominique Giard modified configuration e923 so as to allow the
design of ALADIN domains with hardly any land (or even no) and the use
of an external land-sea mask.
