气候变化领域集成服务门户(CCPortal): Climatology and ranking of hazardous precipitation events in the western Mediterranean area

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DOI	10.1016/j.atmosres.2021.105521
	Climatology and ranking of hazardous precipitation events in the western Mediterranean area
	Insua-Costa D.; Lemus-Cánovas M.; Miguez-Macho G.; Llasat M.C.
发表日期	2021
ISSN	0169-8095
卷号	255
英文摘要	The western Mediterranean region often suffers from the devastating effects of flooding, caused by enormous rain accumulations that sometimes resemble the values produced by tropical systems. Despite the climatic and social relevancy of this type of episodes, there are some fundamental questions that would still be difficult to answer today, for example: where within the region are more cases recorded? or, which were the most potentially dangerous episodes? In this study, we identify, and then gather and unify information from, all the daily events occurred from 1980 to 2015. Using the MESCAN high-resolution gridded rainfall dataset, events are detected and for each case, the date and affected regions are recorded. Subsequently, events are ranked according to their magnitude and classified by weather type. In addition, flood data from the FLOODHYMEX and EM-DAT databases are used to check whether the precipitation episodes resulted in flooding. All this information is collected into a publicly available single database. Results show that the highest number of events per year is recorded in the Languedoc-Roussillon region (France) and in the Valencian Community (Spain). The cases of greatest magnitude, which are associated with a larger number of floods, present a very marked seasonality, with about 80% of them occurring in September, October and November. Finally, we show that only four weather types are present in most of the days with hazardous rainfall in the western Mediterranean. The most hazardous situation is characterized by a low-pressure area at all tropospheric levels in the eastern Atlantic, forming a block pattern with an anticyclonic ridge that tends to extend from the Central Mediterranean to Central Europe. About 40% of the most extraordinary cases are associated with this configuration. As an example, the infamous Piedmont (Italy) 1994 episode, in the top 10 of the ranking, was produced by an atmospheric pattern of this type. © 2021 Elsevier B.V.
英文关键词	Events ranking; Floods; Hazardous rainfall; Mediterranean; Weather types
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236795
作者单位	CRETUS Institute, Universidade de Santiago de CompostelaGalicia, Spain; Non-Linear Physics Group, Universidade de Santiago de CompostelaGalicia, Spain; Climatology Group, Department of Geography, Universitat de BarcelonaCatalonia, Spain; GAMA, Department of Applied Physics, Universitat de BarcelonaCatalonia, Spain
推荐引用方式 GB/T 7714	Insua-Costa D.,Lemus-Cánovas M.,Miguez-Macho G.,et al. Climatology and ranking of hazardous precipitation events in the western Mediterranean area[J],2021,255.
APA	Insua-Costa D.,Lemus-Cánovas M.,Miguez-Macho G.,&Llasat M.C..(2021).Climatology and ranking of hazardous precipitation events in the western Mediterranean area.Atmospheric Research,255.
MLA	Insua-Costa D.,et al."Climatology and ranking of hazardous precipitation events in the western Mediterranean area".Atmospheric Research 255(2021).