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Effects of an assimilation of radar and satellite data on a very-short range forecast of heavy convective rainfalls
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SYSNO ASEP 0327272 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effects of an assimilation of radar and satellite data on a very-short range forecast of heavy convective rainfalls Title Vliv asimilace radarových a družicových dat na velmi krátkodobou předpověď silných konvektivních srážek Author(s) Sokol, Zbyněk (UFA-U) RID, ORCID Number of authors 1 Source Title Atmospheric Research. - : Elsevier - ISSN 0169-8095
Roč. 93, 1-3 (2009), s. 188-206Number of pages 19 s. Publication form web - web Action European Conference on Severe Storms /4./ Event date 10.09.2007-14.09.2007 VEvent location Miramare -Trieste Country IT - Italy Event type EUR Language eng - English Country NL - Netherlands Keywords Precipitation forecast ; NWP model ; Assimilation of radar and satellite data ; Local convective precipitation Subject RIV DG - Athmosphere Sciences, Meteorology R&D Projects GA205/07/0905 GA ČR - Czech Science Foundation (CSF) OC 112 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) 1P05ME748 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000267743900019 DOI 10.1016/j.atmosres.2008.11.001 Annotation An assimilation method of radar reflectivity and satellite data into a NWP model COSMO with a horizontal resolution of 2.8 km and its impact on a very short range forecast of precipitation are presented. The assimilation method corrects of model water vapour mixing ratio using the nudging technique. The correction depends on the difference between model and observed precipitation derived from radar reflectivity and on a cloud classification based on channels 10.8 and 6.2 µm from the Meteosat Second Generation. Two types of corrections are examined. First approach performs the correction at the same grid point where the difference is calculated. Second approach performs the correction at a grid point advected upwind from the point where the difference is calculated. The results show that the application of advection and satelite data can improve precipitation forecasts. Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2010
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