干旱区生态环境知识资源中心(Arid): Different Precipitation Elasticity of Runoff for Precipitation Increase and Decrease at Watershed Scale

Arid

DOI	10.1029/2018JD030129
	Different Precipitation Elasticity of Runoff for Precipitation Increase and Decrease at Watershed Scale
	Tang, Yin 1; Tang, Qiuhong 1,2; Wang, Zhonggen 1; Chiew, Francis H. S.3; Zhang, Xuejun 1; Xiao, Han 4
通讯作者	Tang, Qiuhong
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2019
卷号	124 期号:22 页码:11932-11943
英文摘要	The precipitation elasticity of runoff, defined as the percentage change in mean annual runoff for a given percentage change in mean annual precipitation, has been widely used as a simple rule of thumb for estimating runoff sensitivity to changes in precipitation. Most applications assume the same runoff sensitivity for both an increase and a decrease in precipitation. This study examines this assumption using long historical annual precipitation and streamflow data from 353 watersheds across the United States. The results show that the assumption is acceptable in humid and subhumid regions (aridity index less than 1.0). However, in arid and semiarid regions (aridity index greater than 1.0), the sensitivity of runoff to precipitation is greater for a decrease in precipitation than for an increase in precipitation. Therefore, the use of precipitation elasticity of runoff estimated using the entire data set in semiarid and arid regions will result in an overestimation of runoff increase from precipitation increase and an underestimation of runoff decrease from a decrease in precipitation. These findings suggest that multiple precipitation elasticities of runoff may be needed to estimate nonlinear responses of streamflow to precipitation change in a changing climate, especially for persistent increase and decrease in precipitation.
英文关键词	elasticity of runoff precipitation increase precipitation decrease aridity MOPEX
类型	Article
语种	英语
国家	Peoples R China ; Australia
收录类别	SCI-E
WOS记录号	WOS:000498557800001
WOS关键词	CLIMATE-CHANGE ; SENSITIVITY ; STREAMFLOW ; SCIENCE ; MODEL ; RAIN
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
EI主题词	2019-11-26
来源机构	中国科学院地理科学与资源研究所 ; Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310991
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.CSIRO Land & Water, Canberra, ACT, Australia; 4.Tianjin Univ Sci & Technol, Coll Marine & Environm, Lab Coastal Groundwater Utilizat & Protect, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Tang, Yin,Tang, Qiuhong,Wang, Zhonggen,et al. Different Precipitation Elasticity of Runoff for Precipitation Increase and Decrease at Watershed Scale[J]. 中国科学院地理科学与资源研究所, Commonwealth Scientific and Industrial Research Organisation,2019,124(22):11932-11943.
APA	Tang, Yin,Tang, Qiuhong,Wang, Zhonggen,Chiew, Francis H. S.,Zhang, Xuejun,&Xiao, Han.(2019).Different Precipitation Elasticity of Runoff for Precipitation Increase and Decrease at Watershed Scale.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(22),11932-11943.
MLA	Tang, Yin,et al."Different Precipitation Elasticity of Runoff for Precipitation Increase and Decrease at Watershed Scale".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.22(2019):11932-11943.