气候变化领域集成服务门户(CCPortal): Spatial Variability and Linkage Between Extreme Convections and Extreme Precipitation Revealed by 22-Year Space-Borne Precipitation Radar Data

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DOI	10.1029/2020GL088437
	Spatial Variability and Linkage Between Extreme Convections and Extreme Precipitation Revealed by 22-Year Space-Borne Precipitation Radar Data
	Wang T.; Tang G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	Based on unprecedented 22-year records from the Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) and the Global Precipitation Measurement (GPM) dual-frequency precipitation radar (DPR), this study aims to investigate the global distribution and linkage between both convections and precipitation extremes quasi-globally. Overall, the spatial distributions of extreme events show significant regional variability and land-ocean contrast. Extreme precipitation is dominant over tropical ocean while extreme convections are exclusive over land from tropics to higher latitude. Besides, there are strong positive relationships between extreme convections and precipitation based on multiple threshold-based definitions of extremes, which provides more consistent physical properties of extreme events globally. The correlation is significant over land but relatively weak over oceans. Seasonal occurrences of extreme events are also examined. Furthermore, extreme events exhibit notable diurnal characteristics over global land with most extreme convections occurring in the afternoon, while diurnal cycles are more homogeneous over ocean. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Oceanography; Radar; Radar measurement; Rain gages; Tropics; Dual-frequency precipitation radars; Extreme precipitation; Global distribution; Global precipitation measurements; Precipitation extremes; Regional variability; Spatial variability; Tropical rainfall measuring missions; Precipitation (meteorology); atmospheric convection; extreme event; land-sea interaction; precipitation assessment; radar; satellite data; spatial distribution; spatial variation; TRMM
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170205
作者单位	Institute of Remote Sensing and Geographic Information System, School of Earth and Space Sciences, Peking University, Beijing, China; University of Saskatchewan Coldwater Lab, Canmore, AB, Canada; Centre for Hydrology, University of Saskatchewan, Saskatoon, SK, Canada
推荐引用方式 GB/T 7714	Wang T.,Tang G.. Spatial Variability and Linkage Between Extreme Convections and Extreme Precipitation Revealed by 22-Year Space-Borne Precipitation Radar Data[J],2020,47(12).
APA	Wang T.,&Tang G..(2020).Spatial Variability and Linkage Between Extreme Convections and Extreme Precipitation Revealed by 22-Year Space-Borne Precipitation Radar Data.Geophysical Research Letters,47(12).
MLA	Wang T.,et al."Spatial Variability and Linkage Between Extreme Convections and Extreme Precipitation Revealed by 22-Year Space-Borne Precipitation Radar Data".Geophysical Research Letters 47.12(2020).