Arid
DOI10.1088/1748-9326/11/4/044015
Energy budget increases reduce mean streamflow more than snow-rain transitions: using integrated modeling to isolate climate change impacts on Rocky Mountain hydrology
Foster, Lauren M.1; Bearup, Lindsay A.1; Molotch, Noah P.2,3,4; Brooks, Paul D.5; Maxwell, Reed M.1
通讯作者Foster, Lauren M. ; Maxwell, Reed M.
来源期刊ENVIRONMENTAL RESEARCH LETTERS
ISSN1748-9326
出版年2016
卷号11期号:4
英文摘要

In snow-dominated mountain regions, a warming climate is expected to alter two drivers of hydrology: (1) decrease the fraction of precipitation falling as snow; and (2) increase surface energy available to drive evapotranspiration. This study uses a novel integrated modeling approach to explicitly separate energy budget increases via warming from precipitation phase transitions from snow to rain in two mountain headwaters transects of the central Rocky Mountains. Both phase transitions and energy increases had significant, though unique, impacts on semi-arid mountain hydrology in our simulations. A complete shift in precipitation from snow to rain reduced streamflow between 11% and 18%, while 4 degrees C of uniform warming reduced streamflow between 19% and 23%, suggesting that changes in energy-driven evaporative loss, between 27% and 29% for these uniform warming scenarios, may be the dominant driver of annual mean streamflow in a warming climate. Phase changes induced a flashier system, making water availability more susceptible to precipitation variability and eliminating the runoff signature characteristic of snowmelt-dominated systems. The impact of a phase change on mean streamflow was reduced as aridity increased from west to east of the continental divide.


英文关键词Rocky Mountains climate change integrated modeling snow to rain transitions energy budget hydrology precipitation phase
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000375746800019
WOS关键词WATER AVAILABILITY ; SURFACE-WATER ; GROUNDWATER ; SENSITIVITY ; TRENDS ; VARIABILITY ; SIMULATION ; RESOURCES ; BASIN
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/192787
作者单位1.Colorado Sch Mines, Dept Geol Engn, Golden, CO 80401 USA;
2.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA;
3.Univ Colorado, Dept Geog, Boulder, CO 80309 USA;
4.CALTECH, Jet Prop Lab, Pasadena, CA USA;
5.Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA
推荐引用方式
GB/T 7714
Foster, Lauren M.,Bearup, Lindsay A.,Molotch, Noah P.,et al. Energy budget increases reduce mean streamflow more than snow-rain transitions: using integrated modeling to isolate climate change impacts on Rocky Mountain hydrology[J],2016,11(4).
APA Foster, Lauren M.,Bearup, Lindsay A.,Molotch, Noah P.,Brooks, Paul D.,&Maxwell, Reed M..(2016).Energy budget increases reduce mean streamflow more than snow-rain transitions: using integrated modeling to isolate climate change impacts on Rocky Mountain hydrology.ENVIRONMENTAL RESEARCH LETTERS,11(4).
MLA Foster, Lauren M.,et al."Energy budget increases reduce mean streamflow more than snow-rain transitions: using integrated modeling to isolate climate change impacts on Rocky Mountain hydrology".ENVIRONMENTAL RESEARCH LETTERS 11.4(2016).
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