Status of the COSMO-Model Package

Status of the COSMO-Model Package

Ulrich Schättler

15.-19.09.2008 10th COSMO General Meeting - Krakow, Poland 2

Current Status

• Several components are belonging to the COSMO-Model; new components are on their way (chemistry) into the official source code

• Actual Versions are COSMO-Model 4.5 and INT2LM 1.8

• Officially distributed COSMO-Model 4.2 and INT2LM 1.7


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)



• 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



• 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



• 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



• 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!


(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



• 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



• 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: ?


THE END

Thank you for your Attention


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

Documents

Status of the COSMO-Model Package