+ Workshop on SURFEX data assimilation T oulouse, 5-6 March 2012 - PowerPoint PPT Presentation

Mar 06, 2023 •252 likes •318 views

+ Workshop on SURFEX data assimilation T oulouse, 5-6 March 2012 + Why such a workshop ? SURFEX data assimilation started to be developed in 2007 for Mto-France applications : soil moisture and LAI analyses using Extended Kalman

+ Workshop on SURFEX data assimilation T oulouse, 5-6 March 2012
+ Why such a workshop ?  SURFEX data assimilation started to be developed in 2007 for Météo-France applications : soil moisture and LAI analyses using Extended Kalman Filter (EKF) and Optimum Interpolation (OI) for the land surface scheme ISBA  The community of interest has grown recently since SURFEX is now used by the ALADIN and HIRLAM consortia (new approaches are being developed EnKF and STAEKF)  The availability of new schemes within SURFEX (CROCUS, Flake, TRIP) allows the assimilation of new observations  Action recommended by the first SURFEX Steering Committee (October 2011)
+ Objectives of the workshop  Exchange information and share experience on SURFEX data assimilation :  Provide a survey of current studies and applications using SURFEX data assimilation  Review planned activities based on SURFEX data assimilation  Review current technical limitations of SURFEX data assimilation  Define the content of the surface assimilation package for the next SURFEX version release (end 2012)  Provide a draft working plan of future evolutions
+ Questions to be addressed  What is your current usage of SURFEX for data assimilation ?  Variables to initialize, observation datasets, assimilation technique, operational constraints  What developments are you planning in the near future ?  What are the most important technical issues for your specific applications ?  Are planned evolutions of surface schemes within SURFEX compatible with your data assimilation activities ?
+ T ools to be discussed  SURFEX : Surface modelling platform (OFFLINE version)  CANARI : Optimum interpolation to provide 2D surface analyses of near- surface parameters on model grid  OI_MAIN : Optimum interpolation to provide soil analysis on model grid (1D scheme)  VARASSIM : Extended Kalman Filter  PALM : Coupler developed for data assimilation (CERFACS)

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