气候变化领域集成服务门户(CCPortal): Use of radar data for characterizing extreme precipitation at fine scales and short durations

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DOI	10.1088/1748-9326/ab98b4
	Use of radar data for characterizing extreme precipitation at fine scales and short durations
	Lengfeld K.; Kirstetter P.-E.; Fowler H.J.; Yu J.; Becker A.; Flamig Z.; Gourley J.
发表日期	2020
ISSN	17489318
卷号	15 期号:8
英文摘要	Extreme precipitation is one of the most devastating forms of atmospheric phenomenon, causing severe damage worldwide, and is likely to intensify in strength and occurrence in a warming climate. This contribution gives an overview of the potential and challenges associated with using weather radar data to investigate extreme precipitation. We illustrate this by presenting radar data sets for Germany, the U.S. and the UK that resolve small-scale heavy rainfall events of just a few km2 with return periods of 5 years or more. Current challenges such as relatively short radar records and radar-based QPE uncertainty are discussed. An example from a precipitation climatology derived from the German weather radar network with spatial resolution of 1 km reveals the necessity of radars for observing short-term (1-6 h) extreme precipitation. Only 17.3% of hourly heavy precipitation events that occurred in Germany from 2001 to 2018 were captured by the rain gauge station network, while 81.8% of daily events were observed. This is underlined by a similar study using data from the UK radar network for 2014. Only 36.6% (52%) of heavy hourly (daily) rain events detected by the radar network were also captured by precipitation gauging stations. Implications for the monitoring of hydrologic extremes are demonstrated over the U.S. with a continental-scale radar-based reanalysis. Hydrologic extremes are documented over ∼1000 times more locations than stream gauges, including in the majority of ungauged basins. This underlines the importance of high-resolution weather radar observations for resolving small-scale rainfall events, and the necessity of radar-based climatological data sets for understanding the small-scale and high-temporal resolution characteristics of extreme precipitation. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	extreme precipitation; precipitation climatology; precipitation sensors; spaceborne radar; weather radar
语种	英语
scopus关键词	Floods; Meteorological radar; Radar stations; Rain gages; Atmospheric phenomena; Climatological data; Extreme precipitation; Heavy precipitation; High temporal resolution; Hydrologic extremes; Precipitation climatology; Weather radar networks; Rain; extreme event; precipitation intensity; radar; satellite data; scale effect
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153864
作者单位	Department of Hydrometeorology, Deutscher Wetterdienst, Offenbach am Main, Germany; School of Meteorology, University of Oklahoma, Norman, OK, United States; School of Civil Engineering and Environmental Science, University of Oklahoma, Norman, OK, United States; Advanced Radar Research Center, University of Oklahoma, Norman, OK, United States; NOAA/National Severe Storms Laboratory, Norman, OK, United States; School of Engineering, Newcastle University, United Kingdom; Cooperative Institute for Mesoscale Meteorological Studies, Norman, OK, United States
推荐引用方式 GB/T 7714	Lengfeld K.,Kirstetter P.-E.,Fowler H.J.,et al. Use of radar data for characterizing extreme precipitation at fine scales and short durations[J],2020,15(8).
APA	Lengfeld K..,Kirstetter P.-E..,Fowler H.J..,Yu J..,Becker A..,...&Gourley J..(2020).Use of radar data for characterizing extreme precipitation at fine scales and short durations.Environmental Research Letters,15(8).
MLA	Lengfeld K.,et al."Use of radar data for characterizing extreme precipitation at fine scales and short durations".Environmental Research Letters 15.8(2020).