气候变化领域集成服务门户(CCPortal): Extreme Runoff Generation From Atmospheric River Driven Snowmelt During the 2017 Oroville Dam Spillways Incident

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DOI	10.1029/2020GL088189
	Extreme Runoff Generation From Atmospheric River Driven Snowmelt During the 2017 Oroville Dam Spillways Incident
	Henn B.; Musselman K.N.; Lestak L.; Ralph F.M.; Molotch N.P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	In February 2017, a 5-day sequence of atmospheric river storms in California, USA, resulted in extreme inflows to Lake Oroville, the state's second-largest reservoir. Damage to the reservoir's spillway infrastructure necessitated evacuation of 188,000 people; subsequent infrastructure repairs cost $1 billion. We assess the atmospheric conditions, snowmelt, and runoff against major historical events. The event generated exceptional runoff volumes (second largest in a 30-yr record) partially at odds with the event precipitation totals (ninth largest). We explain the discrepancy with observed record melt of deep antecedent snowpack, heavy rainfall extending to unusually high elevations, and high water vapor transport during the atmospheric river storms. An analysis of distributed snow water equivalent indicates that snowmelt increased water available for runoff watershed-wide by 37% (25–52% at 90% confidence). The results highlight potential threats to public safety and infrastructure associated with a warmer and more variable climate. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric movements; Rivers; Runoff; Snow; Snow melting systems; Spillways; Storms; Atmospheric conditions; California , USA; Heavy rainfall; High elevation; Potential threats; Runoff generation; Runoff volumes; Snow water equivalent; Reservoirs (water); precipitation (climatology); rainfall; reservoir; runoff; snow water equivalent; snowmelt; watershed; California; Oroville Dam; 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/170066
作者单位	Center for Western Weather and Water Extremes, University of California San Diego, La Jolla, CA, United States; Vulcan Climate Modeling, Vulcan, Inc., Seattle, WA, United States; Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Henn B.,Musselman K.N.,Lestak L.,et al. Extreme Runoff Generation From Atmospheric River Driven Snowmelt During the 2017 Oroville Dam Spillways Incident[J],2020,47(14).
APA	Henn B.,Musselman K.N.,Lestak L.,Ralph F.M.,&Molotch N.P..(2020).Extreme Runoff Generation From Atmospheric River Driven Snowmelt During the 2017 Oroville Dam Spillways Incident.Geophysical Research Letters,47(14).
MLA	Henn B.,et al."Extreme Runoff Generation From Atmospheric River Driven Snowmelt During the 2017 Oroville Dam Spillways Incident".Geophysical Research Letters 47.14(2020).