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Quantitative comparison of METEOSAT-based thunderstorm detektion and nowcastin with in-situ reports in the European Severe Weather Database (ESWD)

Forster, Caroline and Dotzek , Nikolai (2009) Quantitative comparison of METEOSAT-based thunderstorm detektion and nowcastin with in-situ reports in the European Severe Weather Database (ESWD). EUMETSAT Meteorological Satellite Conference, 21 - 25 September 2009, Bath, United Kingdom.

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Abstract

Severe thunderstorms constitute a major weather hazard in Europe, with an estimated total damage of € 5-8 billion each year. Yet a pan-European database of severe weather reports in a homogeneous data format has become available only recently: the European Severe Weather Database (ESWD). We demonstrate the large potential of ESWD applications for storm detection and forecast evaluation purposes and complement an earlier case-based study. The analysis of all warm-season (JJA) severe weather days in Europe in 2008 corroborated our earlier findings. There is a good agreement between ESWD reports and Cb-TRAM detected thunderstorms, even though no exact correspondence between ESWD reports and Cb-TRAM cells is required (e.g. due to storm morphology). Correspondingly, a large portion of ESWD reports regarded as misses by our strict in/out-of-Cb-TRAM-polygon criterion were still located close to a Cb-TRAM cell. Quantitatively, only the probability of detection (POD) can be evaluated due to the different characteristics of the two data sources. The POD for storm detection was 0.24 on average, with maximum values up to 0.58. The respective analysis for the 30 and 60 minutes nowcasts yielded average POD values of 0.11 and 0.08, respectively, with maximum values of POD exceeding 0.4 on 3 days for the 30 minutes nowcast and on one day for the 60 minutes nowcast.

Document Type:Conference or Workshop Item (Poster)
Title:Quantitative comparison of METEOSAT-based thunderstorm detektion and nowcastin with in-situ reports in the European Severe Weather Database (ESWD)
Authors:
AuthorsInstitution or Email of Authors
Forster, CarolineUNSPECIFIED
Dotzek , NikolaiUNSPECIFIED
Date:2009
Keywords:severe weather database, thunderstorm detection and nowcasting
Event Title:EUMETSAT Meteorological Satellite Conference
Event Location:Bath, United Kingdom
Event Type:international Conference
Event Dates:21 - 25 September 2009
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Air Traffic and Weather (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Dr. Caroline Forster
Deposited On:03 Dec 2009 18:10
Last Modified:05 Dec 2011 16:11

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