Forecast sensitivity to observations at Météo-France : Application to GPS radio-occultation data
Saint-Ramond, Nathalie ; Doerenbecher, Alexis ; Rabier, Florence ; Guidard, Vincent ; Fourrié, Nadia
Année de publication
2012
The 4DVAR system used at METEO-FRANCE processes and assimilates a large amount of satellite and ground based observations. Such a large number of observations needs to be monitored to evaluate their impact on forecast skill. In order to improve weather forecasts and assimilations, the capability to compute the forecast sensitivity to observations has been implemented at Météo-France. This technique (Langland and Baker, 2004) is now commonly used as a complement to data denial experiments. The code implemented in our global model ARPEGE has been developed at ECMWF by C. Cardinali and M. Fisher.
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