DOI: 10.1016/j.atmosres.2020.104863
论文题名: Connecting flash flood events with radar-derived convective storm characteristics on the northwestern Mediterranean coast: knowing the present for better future scenarios adaptation
作者: del Moral A. ; Llasat M.D.C. ; Rigo T.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2020
卷: 238 语种: 英语
英文关键词: Coastal floods
; Convective precipitation
; Flash floods
; Mediterranean coast
; Meteorological radar
; Nowcasting
; Salou
; Storm tracking
Scopus关键词: Embedded systems
; Floods
; Rain
; Sea level
; Storms
; Topography
; Coastal floods
; Convective precipitation
; Flash flood
; Mediterranean coasts
; Nowcasting
; Salou
; Meteorological radar
; atmospheric convection
; climate change
; disaster management
; early warning system
; flash flood
; future prospect
; nowcasting
; precipitation (climatology)
; radar
; storm track
; Catalonia
; Mediterranean Coast [Spain]
; Spain
英文摘要: The northwestern Mediterranean coast is one of the areas most affected by flash floods and adverse weather, where also global climate scenarios are predicting an increase in precipitation extremes. This, along with the sea-level rise and the associated potential infrastructure and economical losses, represents a major risk for coastal settlements, as the one studied in this work: a major touristic area on the southern coast of Catalonia. The objective of the present paper is, thus, to understand in-depth the behavior of convective activity in the area and its link with flash flood events, to improve adverse and severe weather early warning systems in a rapidly changing weather as an adaptation measure. With this purpose, the study focuses on the period 2014–2018, analyzing the convective cells and storm motion in the region of study, through the new identification and tracking algorithm developed by the authors and applied in the Meteorological Service of Catalonia. The results show that the area is mostly affected by shallow but efficient convection, probably embedded in major weather systems with high precipitation rain rates, which tends to saturate the catchments and produce flooding. The work also shows the role of the topography as a triggering factor for storms outside the convective season, as a key feature for the convergence lines organization, and as a capping for stationary cells upstream. Improvements in the current warning system, such as different precipitation thresholds considering the time of exposure to that rain, as well as a further study are also presented as main results. These results can be extrapolated and applied to other regions affected by the same kind of heavy precipitation and flash floods. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158071
Appears in Collections: 气候变化与战略
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作者单位: Department of Applied Physics, University of Barcelona, Barcelona, Spain; Meteorological Service of Catalonia, Barcelona, Spain; Water Research Institute of the University of Barcelona, Spain
Recommended Citation:
del Moral A.,Llasat M.D.C.,Rigo T.. Connecting flash flood events with radar-derived convective storm characteristics on the northwestern Mediterranean coast: knowing the present for better future scenarios adaptation[J]. Atmospheric Research,2020-01-01,238