Numerical Weather Prediction at DWD COSMO-EU Grid spacing: 7 km Layers: 40 Forecast range: 78 h at 00 and 12 UTC 48 h at 06 and 18 UTC 1 grid element:

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Presentation transcript:

Numerical Weather Prediction at DWD COSMO-EU Grid spacing: 7 km Layers: 40 Forecast range: 78 h at 00 and 12 UTC 48 h at 06 and 18 UTC 1 grid element: 49 km 2 COSMO-DE Grid spacing: 2.8 km Layers: 50 Forecast range: 21 h at 00, 03, 06, 09, 12, 15, 18, 21 UTC 1 grid element: 8 km 2 Global model GME Grid spacing: 40 km Layers: 40 Forecast range: 174 h at 00 and 12 UTC 48 h at 06 and 18 UTC 1 grid element: 1384 km 2

Grid spacing:  x = 2.8 km direct simulation of the coarser parts of deep convection interactions with fine scale topography Data assimilation using radar data (LHN) Time step  t = 25 sec 421 x 461 x 50 grid points ~ 1200 * 1300 * 22 km³ lowest layer in 10 m above ground 21-h forecasts from 00, 03, …, 21 UTC boundary values from COSMO-EU (  x = 7 km) Operational: 16 April 2007 COSMO-DE Configuration Numerical Weather Prediction at DWD

New DWD Headquarters by June 2008 Offenbach, Frankfurter Strasse 135

New DWD Supercomputer by June 2008 Invitation to tender out in Q2, 2007 Benchmark: Different resolutions of COSMO model 3 companies bidding Final decision will be announced by end of October 2007 Installation phase I in 2008: 2 x 4.5 TFlop/s sustained Installation phase II in 2010: Upgrade by at least a factor of 2 Main cost driver: Ensembles (data assimilation, forecasting)