COSMO-CLM

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The COSMO-CLM ( COSMO model in CLimate Mode , also CCLM) is a regional climate model , i.e. a computer program that is used for regional climate modeling. It is closely related to the COSMO model, which is used for weather forecasting purposes. It is being further developed jointly by national European weather services ( Consortium for Small Scale Modeling - COSMO) and a worldwide user and developer community in the field of regional climate research (CLM community) .

The intention of the regional weather and climate model is to adapt to special, small-scale conditions.

Development and versions

Based on the local model  (LM), the original weather forecast model of the German Weather Service  (DWD), the consortium for small-scale modeling (COSMO), an association of national weather services , developed the non-hydrostatic operational weather forecast model COSMO from 1998.

In 2002, German climate researchers began working together in the Climate Limited-area Modeling Community (CLM) to adapt the model originally designed for numerical weather forecasting to the requirements of regional climate modeling, which led to the development of the model in climate mode (COSMO-model in CLimate Mode). Both lines of development, COSMO and COSMO-CLM, are regularly brought together again. In the course of merging the two development strands, the regional climate model was renamed COSMO-CLM in 2007.

The CLM community is currently an open international network for scientists who use the COSMO-CLM for research purposes, develop it further and support each other professionally with know-how in an online ticket system.

In 2016, the Meteorological Journal published a special volume of scientific articles on the latest developments in regional climate modeling with COSMO-CLM.

software

The source code of the COSMO-CLM is available for scientific purposes after inclusion in the CLM community and can be adapted to the needs of the user. The COSMO-CLM is written in the programming language Fortran 90 and is generally compiled and used on UNIX systems . The general interface to the program are the name lists , in which a large number of parameters for the execution of the program are set.

The COSMO-CLM can be downloaded for free after registering free of charge with the CLM community and describing the intended use of the program. Fundamental improvements to the program and the elimination of errors can be forwarded to the relevant points in the CLM community (code maintenance) and, if necessary, will be included in a subsequent official version.

Projects and application examples

So far, the COSMO-CLM has been used for periods of years to centuries and horizontal resolutions of 1 to 50 km for many regions of the world. The model is considered very reliable. An evaluation by the ZAMG (2012), however, showed weaknesses in the modeling over topographically demanding terrain (here: the inner Alpine region).

With the help of the model, significant contributions to international research projects could be made. The COSMO-CLM was used by the following institutions:

  • The Coordinated Regional Climate Downscaling Experiment (CORDEX ) coordinated by the World Climate Research Program (WCRP) and the European projects forecasting regional scenarios and uncertainties to determine the risks and effects of climate change in Europa ( Prediction of Regional Scenarios and Uncertainties for Defining EuropeaN Climate change risks and Effects - PRUDENCE) and ENSEMBLES.
  • In the International Water Research Alliance Saxony  (IWAS) it is the exclusive tool for the region-specific basis for project-relevant regional climate scenarios obtained through dynamic downscaling.
  • Helmholtz Center Geesthacht / Center for Materials and Coastal Research
  • BTU-Cottbus / Chair for Meteorology
  • Potsdam Institute for Climate Impact Research
  • Central  Institute for Meteorology and Geodynamics (ZAMG) - especially for research projects on precipitation in the Eastern Alps and HISTALP measurement data (EVACLIM: Evaluation of ERA40 reanalyses 1961–2000, 2001/02; WETPAT: Vb-Zugbahnen und Wetterlagenklassifikation , 2001/02; long-term forecasts until 2100; etc.)

Web links

Individual evidence

  1. ^ G. Doms, U. Schättler: The non-hydrostatic limited-area model LM (LokalModell) of DWD - Part I: Scientific documentation . German Weather Service, Offenbach / M, 1999.
  2. ^ G. Doms, U. Schättler: A Description of the Nonhydrostatic Regional Model LM, Part I: Dynamics and Numerics, LM F90 2.18 . Deutscher Wetterdienst, Offenbach, Germany, 2002 ( DOMS2002 [PDF; 1,3 MB ]). DOMS2002 ( Memento of the original from September 23, 2015 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot / www.dwd.de
  3. ^ B. Rockel, A. Will, A. Hense: The Regional Climate Model COSMO-CLM (CCLM). Editorial . In: Meteorol. Z. band 12, 4 , 2008, pp. 347-348 .
  4. ^ Model and Software - Technical Pages . redc.clm-community.eu
  5. ↑ Recent developments in Regional Climate Modeling with COSMO-CLM, Part 1. In: Meteorologische Zeitschrift (= Meteorologische Zeitschrift. Volume 25 No. 2). Borntraeger brothers, 2016, ISSN  0941-2948 . ( online )
  6. ↑ Barbara Früh, Andreas Will, Christopher L. Castro: Recent developments in Regional Climate Modeling with COSMO-CLM, Part 2. In: Meteorologische Zeitschrift (= Meteorologische Zeitschrift. Volume 25 No. 5). Borntraeger brothers, 2016, ISSN  0941-2948 . ( online )
  7. ↑ Klaus Haslinger, Ivonne Anders, Michael Hofstätter: Regional climate modeling over complex terrain: an evaluation study of COSMO-CLM hindcast model runs for the Greater Alpine Region. In: Climate Dynamics , Volume 40, Issue 1, January 2013, pp. 511-529;
    The limits of regional climate models. , zamg.ac.at: News , October 16, 2012.
  8. ↑ Current list of members and users (clm-community.eu) ( Memento of the original from August 6, 2016 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.clm-community.eu
  9. ↑ World Climate Research Program (WCRP)
  10. ↑ CoORdinated regional climate Downscaling EXperiment (CORDEX)
  11. ^ F. Giorgi, C. Jones, GR Asrar ,: Addressing climate information needs at the regional level: the CORDEX framework . In: WMO Bulletin . tape 58 , no. 3 , 2009, p. 175-183 .
  12. ↑ Prediction of Regional Scenarios and Uncertainties for Defining EuropeN Climate change risks and Effects (PRUDENCE)
  13. ↑ J. Hesselbjerg Christensen, et al .: PRUDENCE Final Report PDF . In: PRUDENCE . 2005.
  14. ↑ ENSEMBLES project ( Memento of the original from February 10, 2010 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / ensembles-eu.metoffice.com
  15. ↑ P. van der Linden, John FB Mitchel (ed.): ENSEMBLES: Climate Change and its impacts: Summary and results from the ENSEMBLES project . 2009, p. 160 .
  16. ↑ International Water Research Alliance Saxony (IWAS)
  17. ^ T. Kalbacher, et al .: The IWAS ToolBox: Software coupling for an integrated water resources management . In: Environmental Earth Sciences . tape 65 , 2012, p. 1367-1380 , doi : 10.1007 / s12665-011-1270-y .
  18. ↑ D. Pavlik, et al .: Dynamic downscaling of global climate projections for Eastern Europe with a horizontal resolution of 7km . In: Environmental Earth Sciences . tape 65 , 2009, p. 1475-1482 , doi : 10.1007 / s12665-011-1081-1 .
  19. ↑ Helmholtz Center Geesthacht / Center for Material and Coastal Research ( Memento of the original from April 7, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (Link no longer available 2016). @1@ 2Template: Webachiv / IABot / www.hzg.de
  20. ↑ BTU-Cottbus / Chair of Meteorology ( Memento of the original from September 4, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.tu-cottbus.de
  21. ^ Potsdam Institute for Climate Impact Research
  22. ↑ EVACLIM , zamg.ac.at: climate modeling .
  23. ↑ WETPAT , zamg.ac.at: climate modeling .
  24. ↑ Climate Future / Alpine Space / Precipitation , zamg.ac.at: Information portal on climate change .
  25. ↑ Are periods of drought more frequent in the Alpine region? , zamg.ac.at: News , September 21, 2015.