气候变化领域集成服务门户(CCPortal): Decoupling of warming mountain snowpacks from hydrological regimes

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DOI	10.1088/1748-9326/abb55f
	Decoupling of warming mountain snowpacks from hydrological regimes
	López-Moreno J.I.; Pomeroy J.W.; Alonso-González E.; Morán-Tejeda E.; Revuelto J.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Climate warming will reduce the duration of mountain snowpacks and spring runoff, impacting the timing, volume, reliability, and sources of water supplies to mountain headwaters of rivers that support a large proportion of humanity. It is often assumed that snow hydrology will change in proportion to climate warming, but this oversimplifies the complex non-linear physical processes that drive precipitation phases and snowmelt. In this study, snow hydrology predictions made using a physical process snow hydrology model for 44 mountains areas worldwide enabled analysis of how snow and hydrological regimes will respond and interact under climate warming. The results show a generalized decoupling of mountain river hydrology from headwater snowpack regimes. Consequently, most river hydrological regimes shifted from reflecting the seasonal snowmelt freshet to responding rapidly to winter and spring precipitation. Similar to that already observed in particular regions, this study confirms that the worldwide decline in snow accumulation and snow cover duration with climate warming is substantial and spatially variable, yet highly predictable from air temperature and humidity data. Hydrological regimes showed less sensitivity, and less variability in their sensitivity to warming than did snowpack regimes. The sensitivity of the snowpack to warming provides crucial information for estimating shifts in the timing and contribution of snowmelt to runoff. However, no link was found between the magnitude of changes in the snowpack and changes in annual runoff. © 2020 The Author(s). Published by IOP Publishing Ltd
英文关键词	Climate warming; Hydrology; Mountains; Sensitivity; Snow
语种	英语
scopus关键词	Climate change; Digital storage; Hydrology; Landforms; Rivers; Runoff; Snow; Snow melting systems; Water supply; Air temperature; Climate warming; Hydrological regime; Mountain snowpack; Physical process; Snow accumulation; Snow cover durations; Spring precipitation; Climate models; glacial hydrology; global warming; headwater; hydrological regime; mountain environment; precipitation (climatology); prediction; runoff; snow accumulation; snowmelt; snowpack
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/153530
作者单位	Pyrenean Institute of Ecology, CSIC, Zaragoza, 50059, Spain; Centre for Hydrology, University of Saskatchewan, Saskatoon, SK S7N 1K2, Canada; Department of Geography, University of the Balearic Islands, Palma, 07122, Spain
推荐引用方式 GB/T 7714	López-Moreno J.I.,Pomeroy J.W.,Alonso-González E.,et al. Decoupling of warming mountain snowpacks from hydrological regimes[J],2020,15(11).
APA	López-Moreno J.I.,Pomeroy J.W.,Alonso-González E.,Morán-Tejeda E.,&Revuelto J..(2020).Decoupling of warming mountain snowpacks from hydrological regimes.Environmental Research Letters,15(11).
MLA	López-Moreno J.I.,et al."Decoupling of warming mountain snowpacks from hydrological regimes".Environmental Research Letters 15.11(2020).