nwp at the italian meteorological service: status report
DESCRIPTION
NWP at the Italian Meteorological Service: STATUS REPORT. Massimo Bonavita , Lucio Torrisi, Antonio Vocino and Francesca Marcucci CNMCA Italian Meteorological Service Pratica di Mare, Rome, Italy. 29 th EWGLAM, Dubrovnik, 8-11 October 2007. Domain size. 769x513. Grid spacing. - PowerPoint PPT PresentationTRANSCRIPT
NWP at the Italian Meteorological Service:
STATUS REPORT
29th EWGLAM, Dubrovnik, 8-11 October 2007
Massimo Bonavita, Lucio Torrisi, Antonio Vocino and Francesca Marcucci
CNMCA
Italian Meteorological Service
Pratica di Mare, Rome, Italy
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NWP at the IMS
Domain size 769x513
Grid spacing 0.125° (14 Km)
Number of layers 40
Time step 150 sec
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-VAR
Initialization Digital Filter
External analysis None
Status Operational
Hardware IBM P690 (ECMWF)
N° of processors used 32 (Model), 90 (Analysis)
29th EWGLAM, Dubrovnik, 8-11 October 2007
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Domain size 641 x 401
Grid spacing 0.0625 (7 km)
Number of layers 40
Time step 40 s
Forecast range 72 hrs
Initial time of model run 00 UTC
Lateral bound. condit. IFS
L.B.C. update freq. 3 hrs
Initial state Interpolated 3D-VAR
Initialization D.F.I.
External analysis T,u,v, q, SP
Special features Filtered topography
Status Operational
Hardware IBM P690 (ECMWF)
N° of processors 120
Initial Conditions: Interpolated 14 Km 3D-VAR analysis
29th EWGLAM, Dubrovnik, 8-11 October 2007
NWP at the IMS
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NWP at the IMS
Operational fromearly 2008.• Meet Hydrology-
SAF programme obligations
• Help with opportunity LAM EPS efforts
• Facilitate comparison with other European wide high resolution modelling systems
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NWP at the IMS
The 2.8 km COSMO-IT has been running at the Italian Met. Service since October 2006. 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
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3rd SRNWP Workshop on short-range EPS
www.meteoam.it
Rome, 10-12 December 2007Università Roma I “Sapienza”