Data Assimilation Seminar
Prof. Roland Potthast (Nov. 13, 2018, 10:30-)
|Affiliation||German Weather Service (DWD) / University of Reading|
|Title||New Observations and Algorithmic Developments for Convective Scale Ensemble Data Assimilation|
We first present the setup of the ensemble data assimilation (EDA) and forecasting systems (EPS) which have been developed and are under development at the German Weather Service DWD and its COSMO partners. This is first the ICON global+mesoscale model (two-way nested), 13km/6.5km resolution, with its hybrid ensemble variational data assimilation (LETKF+EnVAR) run on a 3h cycle,and the ensemble prediction system ICON EPS. Second, this system drives the high-resolution ensemble data assimilation system COSMO-KENDA (Kilometer Scale Ensemble Data Assimilation) with 2.2km operational resolution at DWD and up to 1km resolution at further members of the COSMO consortium (Germany, Switzerland, Italy, Russia, Poland, Romania, Greece and Israel) to provide initial conditions for the high-resolution ensemble forecasting systems, e.g. the operational COSMO-D2-EPS or experimental ICON-LAM EPS. The system is also successfully run on GPU based supercomputers.
|Link to PDF file|