气候变化领域集成服务门户(CCPortal): Shift Toward Intense and Widespread Precipitation Events Over the United States by Mid-21st Century

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DOI	10.1029/2020GL089899
	Shift Toward Intense and Widespread Precipitation Events Over the United States by Mid-21st Century
	Rastogi D.; Touma D.; Evans K.J.; Ashfaq M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	The United States has witnessed an increase in the frequency of intense and spatially widespread precipitation events in recent decades. Using a high-resolution hybrid ensemble of regional climate simulations, we project further intensification of widespread extremes in the near future. The simulations cover 1966–2005 in the historical period and 2011–2050 in the future period under RCP8.5 scenario and show good correspondence with the observations in the historical period. The projected changes in the characteristics of precipitation events are associated with more frequent occurrence of extreme years where contribution from intense and widespread events to the annual precipitation is unprecedently high. While our findings are consistent with recent trends in the observations, they are in contrast to some earlier studies that project shrinking of precipitation events in the future period, which highlight the need for more rigorous investigations of changes in the spatial extent of precipitation in future climates. ©2020. The Authors.
英文关键词	Geophysics; Annual precipitation; Future climate; High resolution; Historical periods; Precipitation events; Recent trends; Regional climate simulation; Spatial extent; Earth sciences; correspondence analysis; ensemble forecasting; precipitation (climatology); regional climate; simulation; trend analysis; twenty first century; United States
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/169651
作者单位	Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States; The Bredesen Center, The University of Tennessee, Knoxville, Knoxville, TN, United States; Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, United States
推荐引用方式 GB/T 7714	Rastogi D.,Touma D.,Evans K.J.,et al. Shift Toward Intense and Widespread Precipitation Events Over the United States by Mid-21st Century[J],2020,47(19).
APA	Rastogi D.,Touma D.,Evans K.J.,&Ashfaq M..(2020).Shift Toward Intense and Widespread Precipitation Events Over the United States by Mid-21st Century.Geophysical Research Letters,47(19).
MLA	Rastogi D.,et al."Shift Toward Intense and Widespread Precipitation Events Over the United States by Mid-21st Century".Geophysical Research Letters 47.19(2020).