... excepted the work report in the ALATNET Toulouse work and PhD reports (ALADIN and ALATNET).
The new ALADIN library, AL15, is now ready, thanks to the self-sacrifice of Claude Fischer and the help from a few brave ALADINers : Lora Gaytandjieva, Stjepan Ivatek-Sahdan, Martin Janousek, Jan Masek, Gabor Radnoti, Vanda Sousa da Costa, Malgorzata Szczech, and Ryad El Khatib. However some more work is still required, especially concerning observation handling, optimization, e923, ...
Karim Bergaoui, Nihed Bouzouita and Abdelwaheb Nmiri prepared the new ALADIN-Tunisie suite, with some help from Jean-Marc Audoin and Jean-Daniel Gril : benchmark and definition of the pre-operational version to be temporarily run in Toulouse. Part of their stays was also devoted to further training.
Blazenka Vukelic prepared the "EUROCS Stratocumulus Case" observational dataset for use in the 1d version of ARPEGE/ALADIN. The first experiments showed that the current physics is not as bad as foreseen, and identified two major deficiencies in such situations : too much intermittency due to spurious triggering of the "deep convection" scheme, and a significant underestimation of cloudiness within the "vertical diffusion" scheme.
The first problem was also mentioned by Frédéric Sourgen, who studied the respective impacts of physics and resolution on the forecast of the tropical cyclone FLO by ALADIN. He also analysed the behaviour of the convection scheme as the resolution decreases (from 50 to 5 km), and exhibited a strong underestimation of evaporation over sea. The second problem was addressed by Janko Merse. Some more details on these two studies are given in the ALATNET report.
Jean-Marcel Piriou improved the partition of convective (unresolved) precipitations between solid and liquid ones, so as to avoid snowfalls in warm air as it sometimes happened on rather colder soils. The temperature above the current vertical level is now considered (instead of the local temperature), as was already the case for stratiform (resolved) precipitations.
A new tool was designed to simulate "infra-red" or "water vapour" brightness temperatures from model fields, for diagnostic or validation purposes. Different radiation schemes may be used. For more details, contact : Jean-Marcel.Piriou++at++meteo.fr.
After several months of test and retuning, involving François Bouyssel and Françoise Taillefer, Diag-Pack is now pre-operational at Météo-France. Hourly analyses, based on ALADIN-France and all available SYNOP-type observations, are sent to three regional centres for real-time validation.
To end with, the Toulouse team provided many teachers to the ALATNET training course, and also an efficient organisation team : Patricia Pottier and Jean-Daniel Gril.
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