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The 1-way on-line coupled atmospheric chemistry model system MECO(n) – Part 3: Meteorological evaluation of the on-line coupled system

Hofmann, Christiane und Kerkweg, Astrid und Wernli, Heini und Jöckel, Patrick (2012) The 1-way on-line coupled atmospheric chemistry model system MECO(n) – Part 3: Meteorological evaluation of the on-line coupled system. Geoscientific Model Development, 5, Seiten 129-147. DOI: 10.5194/gmd-5-129-2012.

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Offizielle URL: http://www.geosci-model-dev.net/5/129/2012/

Kurzfassung

Three detailed meteorological case studies are conducted with the global and regional atmospheric chemistry model system ECHAM5/MESSy(→COSMO/MESSy)n, shortly named MECO(n). The aim of this article is to assess the general performance of the on-line coupling of the regional model COSMO to the global model ECHAM5. The cases are characterised by intense weather systems in Central Europe: a cold front passage in March 2010, a convective frontal event in July 2007, and the high impact winter storm "Kyrill" in January 2007. Simulations are performed with the new on-line-coupled model system and compared to classical, off-line COSMO hindcast simulations driven by ECMWF analyses. Precipitation observations from rain gauges and ECMWF analysis fields are used as reference, and both qualitative and quantitative measures are used to characterise the quality of the various simulations. It is shown that, not surprisingly, simulations with a shorter lead time generally produce more accurate simulations. Irrespective of lead time, the accuracy of the on-line and off-line COSMO simulations are comparable for the three cases. This result indicates that the new global and regional model system MECO(n) is able to simulate key mid-latitude weather systems, including cyclones, fronts, and convective precipitation, as accurately as present-day state-of-the-art regional weather prediction models in standard off-line configuration. Therefore, MECO(n) will be applied to simulate atmospheric chemistry exploring the model's full capabilities during meteorologically challenging conditions.

Dokumentart:Zeitschriftenbeitrag
Titel:The 1-way on-line coupled atmospheric chemistry model system MECO(n) – Part 3: Meteorological evaluation of the on-line coupled system
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Hofmann, Christianehofmach@uni-mainz.de
Kerkweg, Astridkerkweg@uni-mainz.de
Wernli, Heiniheini.wernli@env.ethz.ch
Jöckel, PatrickPatrick.Joeckel@dlr.de
Datum:19 Januar 2012
Erschienen in:Geoscientific Model Development
Referierte Publikation:Ja
In Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:5
DOI :10.5194/gmd-5-129-2012
Seitenbereich:Seiten 129-147
Status:veröffentlicht
Stichwörter:global model, regional model, atmospheric model, meteorology, precipitation, nesting, model coupling, COSMO, MESSy, model evaluation
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr, Raumfahrt, Luftfahrt
HGF - Programmthema:Verkehrssystem, Erdbeobachtung, ATM und Flugbetrieb
DLR - Schwerpunkt:Verkehr, Raumfahrt, Luftfahrt
DLR - Forschungsgebiet:V VS - Verkehrssystem, R EO - Erdbeobachtung, L AO - Luftverkehrsmanagement und Flugbetrieb
DLR - Teilgebiet (Projekt, Vorhaben):V - Projekt Verkehrsentwicklung und Umwelt, R - Vorhaben Atmosphären- und Klimaforschung, L - Klima, Wetter und Umwelt
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Dynamik der Atmosphäre
Hinterlegt von: Patrick Jöckel
Hinterlegt am:30 Jan 2012 12:22
Letzte Änderung:12 Dez 2013 21:34

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