气候变化领域集成服务门户(CCPortal): Simultaneous Episodes of Heavy Rainfall in Morocco and Southern Alps: 2. Time Scales and Mapping of Remote and Local Evaporative Sources

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DOI	10.1029/2019JD030437
	Simultaneous Episodes of Heavy Rainfall in Morocco and Southern Alps: 2. Time Scales and Mapping of Remote and Local Evaporative Sources
	Gangoiti G.; Sáez de Cámara E.; Alonso L.; Iza J.; García J.A.; Valdenebro V.; Gómez M.C.; Navazo M.; García E.
发表日期	2020
ISSN	2169897X
卷号	125 期号:4
英文摘要	A mesoscale modeling system, previously used to evaluate the evaporation sources during the August 2002 Central-European Floods (ACEF), is now adapted to analyze the 14–16 November 2002 simultaneous torrential rains in the Alps and Morocco. The meteorology of the selected episode and the climatology and time of recurrence of similar episodes were discussed in the companion article. Contrary to the ACEF estimations, the vapor sources keep almost constant for the 3-day rainfalls, in accordance with a quasi-stationary large-scale forcing. They show a dominance of marine sources (60% and 93% of the total attributed precipitations in the Alps and Morocco, respectively) with a main role of the Western Central Mediterranean for the Alpine targets and the Atlantic Ocean for Morocco. A share of 12%, comparable with the August episode, comes from direct rain-column evaporation in the Alps. Vapor loading rates of the target vapor show an exponential increase during the last 3–4 days before the initiation of the episode, while for the ACEF episode we estimate a longer period of 6–7 days. Three areas of intense marine evaporation are observed, two in the North Atlantic Ocean and one in the Mediterranean Sea, related with the rainfall targets and corresponding with regions of enhanced sea surface temperature decrease. Vapor from the main terrestrial source in North Africa, including the tropical region, is transported inside the prefrontal secondary circulation into the Alpine region. A similar circulation and evaporative source distribution are documented during other simultaneous episodes. ©2020. The Authors.
英文关键词	evaporative sources; extreme rainfall; mesoscale meteorology
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186177
作者单位	Escuela de Ingeniería de Bilbao, University of the Basque Country (UPV/EHU), Bilbao, Spain
推荐引用方式 GB/T 7714	Gangoiti G.,Sáez de Cámara E.,Alonso L.,et al. Simultaneous Episodes of Heavy Rainfall in Morocco and Southern Alps: 2. Time Scales and Mapping of Remote and Local Evaporative Sources[J],2020,125(4).
APA	Gangoiti G..,Sáez de Cámara E..,Alonso L..,Iza J..,García J.A..,...&García E..(2020).Simultaneous Episodes of Heavy Rainfall in Morocco and Southern Alps: 2. Time Scales and Mapping of Remote and Local Evaporative Sources.Journal of Geophysical Research: Atmospheres,125(4).
MLA	Gangoiti G.,et al."Simultaneous Episodes of Heavy Rainfall in Morocco and Southern Alps: 2. Time Scales and Mapping of Remote and Local Evaporative Sources".Journal of Geophysical Research: Atmospheres 125.4(2020).