2011
Two cold-season derechoes in Europe
GATZEN, Christoph; Tomáš PÚČIK a David RÝVAZákladní údaje
Originální název
Two cold-season derechoes in Europe
Autoři
GATZEN, Christoph; Tomáš PÚČIK a David RÝVA
Vydání
Atmospheric Research, Amsterdam, ELSEVIER, 2011, 0169-8095
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10500 1.5. Earth and related environmental sciences
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 1.911
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/11:00059248
Organizační jednotka
Přírodovědecká fakulta
UT WoS
Klíčová slova anglicky
Cold season; Derechoes; Europe
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 22. 4. 2013 14:06, Ing. Andrea Mikešková
Anotace
V originále
In this study, we apply for the first time the definition of a derecho (Johns and Hirt, 1987) to European cold-season convective storm systems. These occurred on 18 January 2007 and 1 March 2008, respectively, and they are shown to fulfill the criteria of a derecho. Damaging winds were reported over a distance of 1500 km and locally reached F3 intensity. Synoptic analysis for the events reveal strongly forced situations that have been described for cold-season derechoes in the United States. A comparison of swaths of damaging winds, radar structures, detected lightning, cold pool development, and cloud-top temperatures indicates that both derechoes formed along cold fronts that were affected by strong quasi-geostrophic forcing. It seems that the overlap of the cold front position with the strong differential cyclonic vorticity advection at the cyclonic flank of mid-level jet streaks favoured intense convection and high winds. The movement and path width of the two derechoes seemed to be related to this overlap. The wind gust intensity that was also different for both events is discussed and could be related to the component of the mid-level winds perpendicular to the gust fronts.
Návaznosti
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