气候变化领域集成服务门户(CCPortal): More green and less blue water in the Alps during warmer summers

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DOI	10.1038/s41558-019-0676-5
	More green and less blue water in the Alps during warmer summers
	Mastrotheodoros T.; Pappas C.; Molnar P.; Burlando P.; Manoli G.; Parajka J.; Rigon R.; Szeles B.; Bottazzi M.; Hadjidoukas P.; Fatichi S.
发表日期	2020
ISSN	1758678X
卷号	10 期号:2
英文摘要	Climate change can reduce surface-water supply by enhancing evapotranspiration in forested mountains, especially during heatwaves. We investigate this ‘drought paradox’ for the European Alps using a 1,212-station database and hyper-resolution ecohydrological simulations to quantify blue (runoff) and green (evapotranspiration) water fluxes. During the 2003 heatwave, evapotranspiration in large areas over the Alps was above average despite low precipitation, amplifying the runoff deficit by 32% in the most runoff-productive areas (1,300–3,000 m above sea level). A 3 °C air temperature increase could enhance annual evapotranspiration by up to 100 mm (45 mm on average), which would reduce annual runoff at a rate similar to a 3% precipitation decrease. This suggests that green-water feedbacks—which are often poorly represented in large-scale model simulations—pose an additional threat to water resources, especially in dry summers. Despite uncertainty in the validation of the hyper-resolution ecohydrological modelling with observations, this approach permits more realistic predictions of mountain region water availability. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	air temperature; climate change; ecohydrology; evapotranspiration; heat wave; mountain region; precipitation (climatology); runoff; summer; water flux; Alps
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124229
作者单位	ETH Zurich, Institute of Environmental Engineering, Zurich, Switzerland; Département de géographie and Centre d’études nordiques, Université de Montréal, Montréal, QC, Canada; Department of Civil, Environmental and Geomatic Engineering, University College London, London, United Kingdom; Centre for Water Resource Systems, Vienna University of Technology, Vienna, Austria; Department of Civil, Environmental and Mechanical Engineering, DICAM, University of Trento, Trento, Italy; IBM, Zurich Research Laboratory, Zurich, Switzerland
推荐引用方式 GB/T 7714	Mastrotheodoros T.,Pappas C.,Molnar P.,et al. More green and less blue water in the Alps during warmer summers[J],2020,10(2).
APA	Mastrotheodoros T..,Pappas C..,Molnar P..,Burlando P..,Manoli G..,...&Fatichi S..(2020).More green and less blue water in the Alps during warmer summers.Nature Climate Change,10(2).
MLA	Mastrotheodoros T.,et al."More green and less blue water in the Alps during warmer summers".Nature Climate Change 10.2(2020).