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NWP at the Italian Weather Service: CURRENT STATUS AND PERSPECTIVES

NWP at the Italian Weather Service: CURRENT STATUS AND PERSPECTIVES. Massimo Bonavita, Lucio Torrisi, Fabrizio Ciciulla and Antonio Vocino UGM-CNMCA, Rome (Italy). EWGLAM - SRNWP, Ljubljana 3-5 October 2005. Domain size. 385 x 257. Grid spacing. 0.25 Deg (  28 km). Number of layers. 40.

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NWP at the Italian Weather Service: CURRENT STATUS AND PERSPECTIVES

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  1. NWP at the Italian Weather Service: CURRENT STATUS AND PERSPECTIVES Massimo Bonavita, Lucio Torrisi, Fabrizio Ciciulla and Antonio Vocino UGM-CNMCA, Rome (Italy) EWGLAM - SRNWP, Ljubljana 3-5 October 2005

  2. Domain size 385 x 257 Grid spacing 0.25 Deg (28 km) Number of layers 40 Time step and scheme 150 sec, split semi-implicit Forecast range 72 hrs Initial time of model run 00/12 UTC L.B.C. IFS L.B.C. update frequency 3 hrs Initial state CNMCA 3D-PSAS Initialization N.M.I. External analysis None Status Operational Hardware IBM Power4 N° of processors used 14 (Model), 60 (Analysis) CNMCA NWP System EWGLAM - SRNWP, Ljubljana 3-5 October 2005

  3. Domain size 465 x 385 Grid spacing 0.0625 (7 km) Number of layers 35 Time step and scheme 40 s,3 time-lev split-expl Forecast range 60 hrs Initial time of model run 00 UTC Lateral bound. condit. IFS L.B.C. update frequency 3 hrs Initial state EURO-HRM 3D-PSAS Initialization Digital Filter External analysis T,u,v, PseudoRH, SP Special features Filtered topography Status Operational Hardware IBM P690 (ECMWF) N° of processors 120 CNMCA NWP System EWGLAM - SRNWP, Ljubljana 3-5 October 2005

  4. Recent Developments EURO_HRM Model Operational introduction of AMSU-A radiance assimil. • RTTOV 7.1 model in forward and T.L. mode • AMSU A channels 5-10 over sea • Rain contamination check: |Tobs-Tfg|ch4 < 1.5K (Gerard,2003) • Scan position dependent bias correction • 200 km thinning EWGLAM - SRNWP, Ljubljana 3-5 October 2005

  5. Recent Developments EWGLAM - SRNWP, Ljubljana 3-5 October 2004

  6. Recent Developments EURO_LM Model • Introduction of prognostic precipitation • New 7-level soil model EWGLAM - SRNWP, Ljubljana 3-5 October 2005

  7. Current Developments • Use of AMSU-A radiances over land • Introduction of 3h assimilation cycle • Experimentation with hybrid EnKF – 3DVar approach EWGLAM - SRNWP, Ljubljana 3-5 October 2005

  8. Current Developments • Increase of EURO-HRM horizontal resolution to 14Km • Increase of EURO-LM horizontal resolution to 2.5Km • EURO-HRM and EURO-LM will be time critical applications at ECMWF EWGLAM - SRNWP, Ljubljana 3-5 October 2005

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