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Seamless MESO-NH modeling over very large grids

Abstract : With the computing power it brings, the new generation of massively parallel computers allows one to perform a "seamless" modeling of weather on large grids, but it requires a large parallel computing capability for the models. Due to improvements in this direction in the meteorological model of the French research community MESO-NH, a computing performance of over 4 Teraflop/s was obtained with 130000 cores on the machine of the European computer center PRACE. This is a first in France for a weather code. A high resolution simulation, covering the Atlantic and Europe, of the tropical cyclone Helene and its interaction with a planetary wave was also conducted, for which the excellent result gives hope to an improved weather forecasting in Europe.
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Submitted on : Monday, December 6, 2021 - 5:02:15 PM
Last modification on : Friday, January 21, 2022 - 11:20:29 AM


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Florian Pantillon, Patrick Mascart, Jean-Pierre Chaboureau, Christine Lac, Juan Escobar, et al.. Seamless MESO-NH modeling over very large grids. Comptes Rendus Mécanique, Elsevier, 2011, 339 (2-3), pp.136-140. ⟨10.1016/j.crme.2010.12.002⟩. ⟨hal-01002009⟩



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