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Evaluation of thunderstorm indices from ECMWF analyses, lightning data and severe storm reports

Kaltenböck, Rudolf und Diendorfer, Gerhard und Dotzek, Nikolai (2009) Evaluation of thunderstorm indices from ECMWF analyses, lightning data and severe storm reports. Atmospheric Research, 93 (1-3), Seiten 381-396. Elsevier. DOI: 10.1016/j.atmosres.2008.11.005

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Offizielle URL: http://www.sciencedirect.com/science/journal/01698095


This study describes the environmental atmospheric characteristics in the vicinity of different types of severe convective storms in Europe during the warm seasons in 2006 and 2007. 3406 severe weather events from the European SevereWeather Database ESWD were investigated to get information about different types of severe local storms, such as significant or weak tornadoes, large hail, damaging winds, and heavy precipitation. These data were combined with EUCLID (European Cooperation for Lightning Detection) lightning data to distinguish and classify thunderstorm activity on a European scale into seven categories: none, weak and 5 types of severe thunderstorms. Sounding parameters in close proximity to reported events were derived from daily high-resolution T799 ECMWF (European Centre for Medium-range Weather Forecasts) analyses. We found from the sounding-derived parameters in Europe: 1) Instability indices and CAPE have considerable skill to predict the occurrence of thunderstorms and the probability of severe events. 2) Low level moisture can be used as a predictor to distinguish between significant tornadoes or non-severe convection. 3) Most of the events associated with wind gusts during strong synoptic flow situations reveal the downward transport of momentum as a very important factor. 4) While deep-layer shear discriminates well between severe and non-severe events, the storm-relative helicity in the 0�1 km and especially in the 0�3 km layer adjacent to the ground has more skill in distinguishing between environments favouring significant tornadoes and wind gusts versus other severe events. Additionally, composite parameters that combine measurements of buoyancy, vertical shear and low level moisture have been tested to discriminate between severe events.

Titel:Evaluation of thunderstorm indices from ECMWF analyses, lightning data and severe storm reports
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID
Kaltenböck, RudolfAustrocontrolNICHT SPEZIFIZIERT
Erschienen in:Atmospheric Research
Referierte Publikation:Ja
In Open Access:Nein
In ISI Web of Science:Ja
DOI :10.1016/j.atmosres.2008.11.005
Seitenbereich:Seiten 381-396
Stichwörter:Thunderstorm, lightning, ECMWF, ESWD
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Atmosphären- und Klimaforschung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Dynamik der Atmosphäre
Hinterlegt von: Dotzek, Dr.rer.nat. Nikolai
Hinterlegt am:27 Aug 2009 11:34
Letzte Änderung:12 Dez 2013 20:41

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