气候变化领域集成服务门户(CCPortal): Efficiency of the Summer Monsoon in Generating Streamflow Within a Snow-Dominated Headwater Basin of the Colorado River

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DOI	10.1029/2020GL090856
	Efficiency of the Summer Monsoon in Generating Streamflow Within a Snow-Dominated Headwater Basin of the Colorado River
	Carroll R.W.H.; Gochis D.; Williams K.H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	The North American Monsoon occurs July–September in the central Rocky Mountains bringing significant rainfall to Colorado River headwater basins. This rain may buffer streamflow deficiencies caused by reductions in snow accumulation. Using a data-modeling framework, we explore the importance of monsoon rain in streamflow generation over historical conditions in an alpine basin. Annually, monsoon rain contributes 18 ± 7% water inputs and generates 10 ± 6% streamflow. The bulk of rain supports evapotranspiration in lower subalpine forests. However, rains have the potential to produce appreciable streamflow at higher elevations where soil moisture storage, forest cover, and aridity are low and rebound late season streamflow 64 ± 13% from simulated reductions in spring snowpack as a function of monsoon strength. Interannual variability in monsoon efficiency to generate streamflow declines with low snowpack and high aridity, implying the ability of monsoons to replenish streamflow in a warmer future with less snow accumulation will diminish. © 2020. The Authors.
英文关键词	Atmospheric thermodynamics; Digital storage; Efficiency; Forestry; Rain; Snow; Soil moisture; Headwater basins; Interannual variability; Moisture storage; Monsoon strength; Simulated reduction; Snow accumulation; Streamflow generations; Subalpine forests; Stream flow; alpine environment; evapotranspiration; headwater; monsoon; precipitation intensity; river basin; seasonality; snow accumulation; snowpack; soil moisture; streamflow; Colorado River [North America]; Rocky Mountains
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/169314
作者单位	Desert Research Institute, Reno, NV, United States; Rocky Mountain Biological Lab, Gothic, CO, United States; National Center for Atmospheric Research, Boulder, CO, United States; Lawrence Berkeley National Laboratory, Berkeley, CA, United States
推荐引用方式 GB/T 7714	Carroll R.W.H.,Gochis D.,Williams K.H.. Efficiency of the Summer Monsoon in Generating Streamflow Within a Snow-Dominated Headwater Basin of the Colorado River[J],2020,47(23).
APA	Carroll R.W.H.,Gochis D.,&Williams K.H..(2020).Efficiency of the Summer Monsoon in Generating Streamflow Within a Snow-Dominated Headwater Basin of the Colorado River.Geophysical Research Letters,47(23).
MLA	Carroll R.W.H.,et al."Efficiency of the Summer Monsoon in Generating Streamflow Within a Snow-Dominated Headwater Basin of the Colorado River".Geophysical Research Letters 47.23(2020).