气候变化领域集成服务门户(CCPortal): High-resolution spatial analysis of the variability in the subdaily rainfall time structure

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DOI	10.1016/j.atmosres.2020.105202
	High-resolution spatial analysis of the variability in the subdaily rainfall time structure
	Kašpar M.; Bližňák V.; Hulec F.; Müller M.
发表日期	2021
ISSN	0169-8095
卷号	248
英文摘要	The paper is motivated by the generally large variability in the rainfall time structure during the events with high subdaily precipitation totals in Czechia, which should be taken into account when designing water management systems to handle precipitation. The presented spatial analysis of the variability in the rainfall time structure is based on the regional frequency analysis of the 6-h totals with a spatial resolution of 1 km. The totals are quantified with the synergy method using the weather-radar-derived precipitation intensities and the totals measured by rain gauges. The frequency analysis employs the progressive and robust region-of-influence method. Instead of only one design storm hyetograph, each site is characterized by the possible occurrence of six hyetographs that are synthetized from the heavy rainfalls in Czechia. The percentage of individual hyetographs for a given design precipitation depth is assessed through the combination of the frequency analyses of the totals with respect to and regardless of the course of precipitation. The spatial heterogeneity in the percentages is significantly affected by the topography and amplifies with the increasing return period of the totals. The six synthetic hyetographs are represented relatively evenly in the lowlands. In contrast, the mountainous areas are characterized by a notable increase in the percentages of events of long-lasting steady rain, which are triggered by their circulation causes together with the significant role of the orographic precipitation enhancements, particularly through the windward orographic lifting, which is mainly on the northern and eastern slopes of the mountains. Future research on the dependence between the return period of the events of a specific precipitation course and the magnitude of the antecedent totals might be even more applicable to hydrological modeling in small catchments. © 2020 Elsevier B.V.
英文关键词	Design precipitation depth; Precipitation course; Precipitation intensity; Regional frequency analysis; Synthetic storm hyetograph
语种	英语
scopus关键词	Catchments; Curricula; Meteorological radar; Rain gages; Spatial variables measurement; Topography; Water management; Hydrological modeling; Orographic precipitation; Precipitation depths; Precipitation intensity; Regional frequency analysis; Spatial heterogeneity; Synthetic hyetographs; Water management systems; Rain; hydrological modeling; precipitation (climatology); rainfall; raingauge; return period; spatial analysis; spatial resolution; Czech Republic
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/141706
作者单位	The Czech Academy of Sciences, Institute of Atmospheric Physics, Bočni II 1401, Prague, 141 00, Czech Republic; Charles University, Faculty of Science, Albertov 6, Prague, 128 43, Czech Republic
推荐引用方式 GB/T 7714	Kašpar M.,Bližňák V.,Hulec F.,et al. High-resolution spatial analysis of the variability in the subdaily rainfall time structure[J],2021,248.
APA	Kašpar M.,Bližňák V.,Hulec F.,&Müller M..(2021).High-resolution spatial analysis of the variability in the subdaily rainfall time structure.Atmospheric Research,248.
MLA	Kašpar M.,et al."High-resolution spatial analysis of the variability in the subdaily rainfall time structure".Atmospheric Research 248(2021).