1. Status of the COSMO-Model Package Ulrich Schättler

2. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland2 Current Status Several components are belonging to the COSMO-Model; new components are on their way (chemistry) into the official source codecomponents Actual Versions are COSMO-Model 4.5 and INT2LM 1.8 Officially distributed COSMO-Model 4.2 and INT2LM 1.7

3. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland3 Source Code Administration Starting point last autumn: –COSMO-Model 4.0 including: Runge-Kutta dynamics; high-resolution applications Climate mode functionality –INT2LM 1.6: on the way to full climate mode functionality Plans for the year 2007/08: –Consolidation of the schemes –Finish INT2LM to work fully in climate mode –Include new components (2-moment microphysics, COSMO-ART)

4. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland4 Source Code Administration COSMO-Model 4.1/4.2: (05.12.07) –Bug fixes for reproducibility (DA, RK, SL-adv) –Calculation of supercell detection indices –Changes in the gust parameterization –Brightband detection in radar data COSMO-Model 4.3: (22.02.08) –Changed computation of 2m Temperature

5. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland5 Source Code Administration COSMO-Model 4.4: (16.07.08) –Changed treatment of convective cloud condensate in the Tiedtke convection scheme –Changed structure of advection routines in the RK dynamics for a better optimization –Optimizations for a better vectorization COSMO-Model 4.5: (05.09.08) –Reading observations from a NetCDF file –Correction for computing reference pressure on half levels –Introduction of the SSO scheme –Implemented alternative reference atmosphere –Further optimizations for RK dynamics and vectorization

6. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland6 Source Code Administration INT2LM 1.7 (23.11.07) –Additional humidity splitting after balancing / filtering pp –Implemented several options for treatment of deep-soil and plant characteristics (for CCLM) –Implemented „Ensemble Mode“ to provide different boundary conditions to the COSMO-Model INT2LM 1.8 (26.05.08) –Optimizations for vectorization –Interpolation of qr and qs from the GME grid –Read new external parameters (for SSO, topographical corrections) –Adaptations for climate mode

7. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland7 Source Code Administration Officially tested and distributed in Dec 2007: –COSMO-Model 4.2 and INT2LM 1.7 Development version distributed in March 2008 –COSMO-Model 4.3 Development versions (not distributed): –COSMO-Model 4.4, 4.5 and INT2LM 1.8 Work is going on to implement –2-moment microphysics –COSMO-ART Official release in autumn 2008!

8. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland8 (New) WG 6 Activities Implementation of a Source Code Task Force within WG 6 to –discuss development strategies (modularity of code; re-use of components in other programs) –discuss development of other programs (postprocessing) –discuss contents of COSMO-Model package –discuss contents of COSMO Software Responsible: Source Code Administrator + members from other institutes

9. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland9 (New) WG 6 Activities Re-activate a former WG 6 task: Code Optimization and Portability –discuss and test implementation strategies for different processor architectures –discuss and test implementation strategies for hybrid parallelization –observe developments in processor architectures (multi-core chips) Responsible: Uli Schättler

10. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland10 (New) WG 6 Activities Set up a new WG 6 task: Grib Issues –a forum to discuss various Grib (1) problems –discuss use and introduction of Grib 2 in COSMO Responsible: ?

11. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland11 THE END Thank you for your Attention

12. 15.-19.09.200810th COSMO General Meeting - Krakow, Poland12 Current Software Status Dynamics: 3 time level split-explicit Leapfrog 2 time level split explicit Runge-Kutta 3 time level semi-implicit Leapfrog Relaxation Physics: Microphysics: 1/2/3-category ice Radiation Subgrid scale Turbulence Closure (diag./diag. TKE / prog. TKE) Surface Fluxes (standard bulk / TKE-based) Moist Convection (Tiedtke / KF) Soil Model (2- / multi-layer) SSO Assimilation: Observation Processing (aof / NetCDF) Surface analysis Nudging (atmospheric Variables / Surface Pressure) Latent Heat Nudging Diagnostics: Near surface weather parameters Mean values Meteographs Volume- and area integrals Synthetic satellite pictures I/O: Grib 1 NetCDF Restarts Misc: Digital Filtering