1. 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

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

3. New DWD Headquarters by June 2008 Offenbach, Frankfurter Strasse 135

4. 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)