Poster: INTER-COMPARISON OF SPATIALISATION METHODS OF DAILY PRECIPITATIONS OVER FRANCE.
Lassegues, Pierre
Climatologies of spatial interpolation of different meteorological parameters are of great interest today for the knowlmedge of the present climate as reference in context of climate change. For precipitations, the methods using only rain gauges data are challenged now
by methods merging radar data and rain gauges. Radar archive will become soon long enough for climatological time scale production. Météo-France DCLIM has developped different spatialisation methods for daily precipitations over France and has implemented an<br>experiment of inter-comparison of performances of these methods for the years 2010 and 2011. The main goal was to test improvement of spatialisation products with methods based on association of rain-gauge data and radar data. A major production of Météo-France<br>in this context is a radar-rain gauges re-analysis over the years 1997-2006 called Comephore [Tabary, 2011]. Previous products of gridded climatologies of precipitations over France were Safran Re-analysis 1958-> today [Quintana-Seguy, 2007],[Vidal, 2011] a surface<br>meterological model based on optimal interpolation with ERA-40 as backgound and also Aurelhy, spatial interpolation of stations climatological means with a statistical method using parameters of orography [Benichou, 1986]. Another interesting product in this context is<br>Antilope, an hourly real time precipitation analysis merging radar data and rain gauges [Laurantin, 2010].
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