气候变化领域集成服务门户(CCPortal): Dramatic declines in snowpack in the western US

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DOI	10.1038/s41612-018-0012-1
	Dramatic declines in snowpack in the western US
	Mote P.W.; Li S.; Lettenmaier D.P.; Xiao M.; Engel R.
发表日期	2018
ISSN	23973722
卷号	1 期号:1
英文摘要	Mountain snowpack stores a significant quantity of water in the western US, accumulating during the wet season and melting during the dry summers and supplying much of the water used for irrigated agriculture, and municipal and industrial uses. Updating our earlier work published in 2005, we find that with 14 additional years of data, over 90% of snow monitoring sites with long records across the western US now show declines, of which 33% are significant (vs. 5% expected by chance) and 2% are significant and positive (vs. 5% expected by chance). Declining trends are observed across all months, states, and climates, but are largest in spring, in the Pacific states, and in locations with mild winter climate. We corroborate and extend these observations using a gridded hydrology model, which also allows a robust estimate of total western snowpack and its decline. We find a large increase in the fraction of locations that posted decreasing trends, and averaged across the western US, the decline in average April 1 snow water equivalent since mid-century is roughly 15–30% or 25–50 km3, comparable in volume to the West’s largest man-made reservoir, Lake Mead. © 2018, The Author(s).
语种	英语
scopus关键词	hydrological modeling; melting; seasonal variation; snowpack; trend analysis; Lake Mead; United States
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178132
作者单位	Oregon Climate Change Research Institute, Oregon State UniversityOR, United States; Environmental Change Institute, University of Oxford, Oxford, United Kingdom; Department of Geography, University of California–Los Angeles, Los Angeles, CA 90095, United States
推荐引用方式 GB/T 7714	Mote P.W.,Li S.,Lettenmaier D.P.,et al. Dramatic declines in snowpack in the western US[J],2018,1(1).
APA	Mote P.W.,Li S.,Lettenmaier D.P.,Xiao M.,&Engel R..(2018).Dramatic declines in snowpack in the western US.npj Climate and Atmospheric Science,1(1).
MLA	Mote P.W.,et al."Dramatic declines in snowpack in the western US".npj Climate and Atmospheric Science 1.1(2018).