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Discussion, Questions, Identification of problems

Discussion, Questions, Identification of problems. Short term goals (2008): AROME : Put the existing soil OI analysis within SURFEX (mid 2008) (useful for HIRLAM groups using AROME)

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Discussion, Questions, Identification of problems

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  1. Discussion, Questions, Identification of problems

  2. Short term goals (2008): • AROME : Put the existing soil OI analysis within SURFEX (mid 2008) (useful for HIRLAM groups using AROME) • HIRLAM Syn scale : use soil OI analysis (with improvements retuning ISBA polynomes). Use of offline SURFEX ? • ALADIN : use CANARI soil OI analysis --> move to soil analysis in SURFEX when the coupling ALADIN/SURFEX is achieved (end 2008 parallel suite ?) to be evaluated by ALADIN partners (early 2008). Starting point for HARMONIE • ALADIN/HARMONIE : choose a common tool for surface analyses (2m, SST, LST ?, snow, sea ice) (CANARI, SPAN)

  3. Split of land surface analyses • CANARI 2D spatial analysis (2m SST snow ice) using orography and LSM • SURFEX soil analysis (water and temperature) with physiographic data bases

  4. HARMONIE • Use of offline SURFEX (validation of land surface) (now) • Use of AROME SURFEX (soil analysis ?) mid 2008 • Use of ALADIN SURFEX coupling (end 2008)

  5. Longer term goals (> 2008): • SEKF in SURFEX using T2m and HU2m • in all model versions (Arome, Harmonie, etc.) • Available to be evaluated by HIRLAM and ALADIN (offline mode mid 2008 and online mode end 2008) • SEKF in SURFEX with new observations (2009) • Coupling between surface and atmosphere assimilations use of 2m observations for atmospheric analysis - use of Ts as a sink variable for atmospheric analysis) - soil assimilation in 4DVAR outer-loops? • gain from wavelet transforms at 2m also in the soil (replacement of CANARI/SPAN ~2011)

  6. How to do joint development HIRLAM/ALADIN? • Intercomparison exercise between MESAN/SPAN and CANARI • Overview of both softwares by 2 experts (exchange of opinions) - Compare operational analysis maps over Europe (2m, SST, ice) for a common period • Hirlam proposal: Maria Diez and Mariken Homleid • Aladin proposal: Francoise Taillefer (other? --> to be asked in the wider community) • Deadline (end Jan 2008?) • Outcome: which spatial interpolation tool? which features to improve in CANARI taken from SPAN (structure functions, correlated obs, nordic variables?) • Small group should gather to take final decision (11 Feb in Toulouse TBC)

  7. Other questions • List of available (applicable) observations -> see the outcomes of the WGs set up last year at the SURFEX workshop (circulate the first draft written by NG and JFM - where do we go from here ?) • Collaboration plan on land surface assimilation within ALADIN for 2008

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