NWP at the Italian Meteorological Service: STATUS REPORT 29 th EWGLAM, Dubrovnik, 8-11 October 2007 Massimo Bonavita, Lucio Torrisi, Antonio Vocino and.

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Presentation transcript:

NWP at the Italian Meteorological Service: STATUS REPORT 29 th EWGLAM, Dubrovnik, 8-11 October 2007 Massimo Bonavita, Lucio Torrisi, Antonio Vocino and Francesca Marcucci CNMCA Italian Meteorological Service Pratica di Mare, Rome, Italy

2 NWP at the IMS Domain size769x513 Grid spacing0.125° (14 Km)‏ Number of layers40 Time step150 sec Forecast range72 hrs Initial time of model run00/12 UTC L.B.C.IFS L.B.C. update frequency3 hrs Initial stateCNMCA 3D-VAR InitializationDigital Filter External analysisNone StatusOperational HardwareIBM P690 (ECMWF)‏ N° of processors used32 (Model), 90 (Analysis) 29 th EWGLAM, Dubrovnik, 8-11 October 2007

3 Domain size641 x 401 Grid spacing (7 km)‏ Number of layers40 Time step40 s Forecast range72 hrs Initial time of model run00 UTC Lateral bound. condit. IFS L.B.C. update freq.3 hrs Initial state Interpolated 3D-VAR InitializationD.F.I. External analysisT,u,v, q, SP Special featuresFiltered topography StatusOperational HardwareIBM P690 (ECMWF)‏ N° of processors120 Initial Conditions: Interpolated 14 Km 3D-VAR analysis 29 th EWGLAM, Dubrovnik, 8-11 October 2007 NWP at the IMS

4 Operational from early Meet Hydrology- SAF programme obligations Help with opportunity LAM EPS efforts Facilitate comparison with other European wide high resolution modelling systems

5 NWP at the IMS The 2.8 km COSMO-IT has been running at the Italian Met. Service since October Intensive verification and tuning of the model has been performed over this period to reach an operational level of skill. Some of the most significant steps: Multi-layer soil (Schrodin & Heise, 2001) Semi-lagrangian advection of humidity variables (Baldauf, 2005) Time integration step tuning (winter storms) Introduction of observation nudging for model initialization

6 3 rd SRNWP Workshop on short- range EPS Rome, December 2007 Università Roma I “Sapienza”