1. Deutscher Wetterdienst Status of the Support Activities, and other WG6 Issues COSMO Working Group 6: Reference Version and Implementation Working Group Coordinator: Ulrich Schättler

2. 05.09.2011COSMO General Meeting 20112 Contents  Developments in 2010/2011 for COSMO-Model / INT2LM  FieldExtra and VERSUS  New COSMO Software?  Status of the Web  Status of the Documentation  The COSMO Standards  GRIB2 and grib_api

3. 05.09.2011COSMO General Meeting 20113 Developments in 2010 / 2011: COSMO-Model  Last officially released version: 4.13 from May 2010 VersionImplementation DateStatus 4.1519.11.10development 4.1606.12.10development 4.1724.02.11development 4.1825.05.11tested 4.1901.08.11development 4.2031.08.11will be distributed for testing

4. 05.09.2011COSMO General Meeting 20114 Some Topics of the Changes  4.15 (development; 19.11.10)  Correction of dry bias of Vaisalla RS92 radiosonde measurements  Restructured control of implicit vertical advection  option to call a 3 rd order implicit vertical advection  4.16 (development; 06.12.10)  Adaptations / bug fix in the FLake Model for using the Runge-Kutta scheme  4.17 (development; 24.02.11)  Changes for running idealized test cases  Proper implementation of periodic boundary conditions  4.18 (tested; 24.05.11)  COSMO-ART interfaces for Runge-Kutta dynamical core  Changes in the control of horizontal advection; added full Strang-splitting  Interfaces for RTTOV9  Conditional Compilation for Nudging, NetCDF, RTTOV

5. 05.09.2011COSMO General Meeting 20115 Some Topics of the Changes (II)  4.19 (development; 01.08.11)  Change in horizontal advection to properly handle flow situations with confluent horizontal flows in neighbouring grid boxes. This avoids spurious and potentially detrimental heat sources, which lead to extreme Theta-values, grid point storms and other unwanted effects.  Conditional compilation for (DWD) Grib1 library  4.20 (will be distributed for testing; 31.08.11)  (First) technical changes regarding unified COSMO-ICON physics  Changed number of small time steps in the last Runge-Kutta step to get a more stable integration.  Radiation: Bug fix in sub grid scale cloudiness  Microphysics: Correction of size distribution for rain droplets and bug fix in density correction of fall speeds (hydci_pp)  Soil Model: Removed the dependency on diagnostic quantity t_2m by replacing it with the lowest atmospheric temperature level (as is done in GME)  Interfaces for coupling with OASIS (with conditional compilation)

6. 05.09.2011COSMO General Meeting 20116 Developments in 2010 / 2011: INT2LM VersionImplementation DateStatus 1.1313.10.10development 1.1419.11.10development 1.1510.12.10development 1.1620.12.10development 1.1725.01.11development 1.1811.03.11tested and released

7. 05.09.2011COSMO General Meeting 20117 Some Topics of the Changes (INT2LM)  1.14 (development; 19.11.10)  Implementation of reading data with grib_api  Processing data from JMA and NCEP  Enabled reproducibility for initialization of isolated points  Bug fix for computation of interpolation weights  Introduction of lake water salinity  1.17 (development; 25.01.11)  Interpolation of QR, QS from IFS (ECMWF)  1.18 (tested and released; 11.03.11)  Bug fixes and technical adaptations

8. 05.09.2011COSMO General Meeting 20118 Plans from last year Technical WorkStatus Sept. 2010 Reconstruction of mpe_ioPrototype available Implementation of ifdefs for external librariesnot started Choice of output format for every Namelist groupnot started Implementation of grib_apistarted for INT2LM New Physics InterfacePrototype for Microphysics Semi-Technical COSMO-ART for Runge-Kuttaunder development 2-moment Microphysicsunder development Generic treatment of idealized casesunder development Implementation of generic tracer variablesneeds coordination Tile / Mosaic approachprototype available; definition of fluxes? Full 3D strang splittingimplemented at MCH; should be discussed in WG2 OASISprototype for OASIS 3.0; new work for 4.0 Urban Moduletechnical difficulties

9. 05.09.2011COSMO General Meeting 20119 Plans from last year Technical WorkStatus Sept. 2011 Reconstruction of mpe_iounder testing Implementation of ifdefs for external librariesdone for Grib, NetCDF, Nudging, RTTOV Choice of output format for every Namelist groupdone Implementation of grib_apistarted for INT2LM New Physics InterfacePrototype for Microphysics, Radiation, Turbulence; gathered more experience Semi-Technical COSMO-ART for Runge-Kuttadone 2-moment Microphysicsunder development Generic treatment of idealized casesdone Implementation of generic tracer variablesunder development Tile / Mosaic approachunder development Full 3D strang splittingimplemented OASISimplemented Urban Moduleno official implementation

10. 05.09.2011COSMO General Meeting 201110 Plans for the Near Future  see SMC Meeting and „Release Planning“  Update COSMO-Model and INT2LM with CLM

11. 05.09.2011COSMO General Meeting 201111 Fieldextra  Generic tool to post-process model data and gridded observations  Available for COSMO Partners, but licensed for other users (10k€ per year)  A new mailing list has been created: fieldextra_support@cosmo-model.orgfieldextra_support@cosmo-model.org  Version 10.4.0 available since 22. July 2011 (using COSMO Modules, computation of potential vorticity, p-quantiles)  Planned for 10.5 (12.2011)  consolidate GRIB2 implementation (COSMO coordination)  new operators: geostrophic vorticity, geostrophic vorticity advection, interpolation on theta surfaces  Planned for 11.0 (07.2012)  Code parallelization and performance improvements  NetCDF input / output

12. 05.09.2011COSMO General Meeting 201112 VERSUS 2 (VERification System Unified Survey)  System for verification configuration and execution  Versus 1: development of a common and unified verification 'library' including a Conditional Verification (CV) tool  Versus 2: Tries to cover the needs coming from higher resolutions, ensemble systems, additional user requests

13. 05.09.2011COSMO General Meeting 201113 New COSMO Software?  ARPA-SIMC reported on the development of Wreport – bufr2netcdf: a library and tools for decoding BUFR reports and creating input files for COSMO model assimilation  Wreport : BUFR/CREX encoding-decoding library  Bufr2netcdf : BUFR preprocessor for observation COSMO data ingest  (Additionally) DB-All.e : import-export data in a physically-based data model, for higher level data processing  ARPA-SIMC proposes to include Wreport and bufr2netcdf into the list of COSMO Software under the GNU-GPL licence.  This is an official request to STC.  DB-ALL.e shall not be COSMO Software, but will also be available for COSMO partners

14. 05.09.2011COSMO General Meeting 201114 Status of the Web  Background work  Unified scripts and other framework (up to now there were different „implementations“ for IE and firefox because of incompatibilities between these systems)  Updated Pages  COSMO-Model (not yet visible)  Documentation (Dynamics, User Guides)  COSMO Tasks (WG, PP, Operational Pages to some extent)  Pages that need update  Organization - Events  Organization – Reports / Plans  Organization – Cooperations  Organization – Scientists  User Support: Restructuring in view of all the new Users / Licencees (see below)  New Pages: SRNWP Observations Page

15. 05.09.2011COSMO General Meeting 201115 Documentation  Model Documentation  Dynamics: New version with documentation of Runge-Kutta scheme available (since last week)  Physics: started work on updating  Assimilation: no updates  User Guides for INT2LM and the COSMO-Model have been updated to the latest versions in paper form. The web page tool has not been updated (work on that tool by CLM Community)  Plans to start with an „Implementation Documentation“ in the next COSMO year

16. 05.09.2011COSMO General Meeting 201116 COSMO Newsletter and Technical Reports  COSMO Newsletter No. 11 has been published in April 2011 with 16 contributions  No new Technical Reports

17. 05.09.2011COSMO General Meeting 201117 Proposed new Subtask: User Support  In the next years the HRM users will migrate to the COSMO-Model, because support for HRM will stop at the end of 2012.

18. 05.09.2011COSMO General Meeting 201118 Proposed new Subtask: User Support  This will increase the need for User Support

19. 05.09.2011COSMO General Meeting 201119 Proposed new Subtask: Possible Activities  Support of new COSMO users during the implementation phase via e-mail and by remote access to their computer systems (if necessary)  Support of new COSMO users in setting up their operational COSMO model suite(s)  Training for new scientific users during the annual "COSMO User Training" in February in Langen, Germany  Training for new operational COSMO model users during the annual "Capacity Building in Regional Modelling“ in Langen, Germany  Creating a Frequently Asked Questions (FAQ) page for COSMO model installation issues (and check how this can be set up)  Implementation of standardized error messages in the COSMO model  We asked for 1 additional FTE

20. 05.09.2011COSMO General Meeting 201120 The COSMO Coding Standards  First draft from August 2010 was followed by a WG 6 discussion at the GM in Moscow  Further drafts in January and April; submission to STC Meeting in April  Discussion within STC resulted in some comments (role of SMC, STC)  Discussions and meetings with CLM group  Discussion within SMC Meetings in January (Zürich) and July (web conf)  „Final Draft“ (now called Version 1.0) from August 2011 submitted to STC for acceptance  NOTE: The „COSMO Coding Standards“ are mainly written for the COSMO-Model and the INT2LM, but are applicable to other COSMO Software. There are appendices for the other codes like fieldextra.  NOTE: The „COSMO Coding Standards“ are also discussed within the CLM Community, but (latest news) not accepted at the moment  Problems for CLM:  which management body decides on CLM developments?  who decides on contents of unified releases?

21. 05.09.2011COSMO General Meeting 201121 GRIB 2 and grib_api  grib_api is the (new) grib library (or application programmers interface) to code / decode Grib (1/2) data  It will replace the Grib1 library from DWD in the near future.  Usage of grib_api for GRIB2 has to be coordinated within COSMO  Usage of shortnames and grib_api tables vs. an extra dictionary  MeteoSwiss „proposed to define a standardized fixed part in Section 2 of GRIB output to code information like model name and experiment tag“ (Coding of local usage should be documented on COSMO Web Page; responsibility of each center)  Use of „local section“ (Section 2 in Grib2): this can be defined by the center; can we have a COSMO common section?  Use of entries for local tables (e.g. generating process identifier, background generating process identifiers)

22. 05.09.2011COSMO General Meeting 201122 Local Usage in GRIB2 Standard for COSMO-Model  Some Comments:  local section structure is dictated by the center, not by the model!  General side constraints for DWD:  Within DWD usage of GRIB2 is coordinated by TI (12/14; not FE1) for the whole of DWD for O(100) applications and even more users!  this allows only a limited range for COSMO wide coordination!  Another proposal: for COSMO wide interoperability only use standard information, no local usage at all (like local section, common information in local tables)  How can we come to a common / acceptable solution?  A meeting will be organized at DWD on Sept. 28./29.

23. 05.09.2011COSMO General Meeting 201123 Last but not least: PP POMPA  Performance on Massively Parallel Architectures  New Priority Project started after last GM  See next session

24. 05.09.2011COSMO General Meeting 201124 Thank you very much for your attention

25. 05.09.2011COSMO General Meeting 201125 Thank you very much for your attention