Modeled effects of irrigation on surface climate in the Heihe River Basin, Northwest China

doi:10.1002/2017JD026732

	Modeled effects of irrigation on surface climate in the Heihe River Basin, Northwest China
	Zhang, Xuezhen 1,2; Xiong, Zhe 3; Tang, Qiuhong 2,4
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2017-08-16
卷号	122 期号:15 页码:7881-7895
关键词	irrigation WRF Noah-MP model Heihe River Basin (HRB) land-atmosphere coupling
ISSN号	2169-897X
DOI	10.1002/2017JD026732
通讯作者	Zhang, Xuezhen(xzzhang@igsnrr.ac.cn)
英文摘要	In Northwest China, water originates from the mountain area and is largely used for irrigation agriculture in the middle reaches. This study investigates the local and remote impact of irrigation on regional climate in the Heihe River Basin, the second largest inland river basin in Northwest China. An irrigation scheme was developed and incorporated into the Weather Research and Forecasting (WRF) model with the Noah-MP land surface scheme (WRF/Noah-MP). The effects of irrigation is assessed by comparing the model simulations with and without consideration of irrigation (hereafter, IRRG and NATU simulations, respectively) for five growth seasons (May to September) from 2009 to 2013. As consequences of irrigation, daily mean temperature decreased by similar to 1.7 degrees C and humidity increased by similar to 2.3gkg(-1) (corresponding to similar to 38.5%) over irrigated area. The temperature and humidity of IRRG simulation matched well with the observations, whereas NATU simulation overestimated temperature and underestimated humidity over irrigated area. The effects on temperature and humidity are generally small outside the irrigated area. The cooling and wetting effects have opposing impacts on convective precipitation, resulting in a negligible change in localized precipitation over irrigated area. However, irrigation may induce water vapor convergence and enhance precipitation remotely in the southeastern portion of the Heihe River Basin.
资助项目	National Natural Science Foundation of China[91325302] ; National Natural Science Foundation of China[41471171] ; National Natural Science Foundation of China[41425002] ; Youth Innovation Promotion Association CAS[2015038] ; Kezhen Outstanding Young Scholars from IGSNRR[2015RC101] ; National Youth Top-notch Talent Support Program in China
WOS关键词	IMPACTS ; PRECIPITATION ; COVER ; MOISTURE ; 1980S
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000408349500012
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Kezhen Outstanding Young Scholars from IGSNRR ; National Youth Top-notch Talent Support Program in China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/61750]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhang, Xuezhen
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Reg Climate Environm East Asia, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xuezhen,Xiong, Zhe,Tang, Qiuhong. Modeled effects of irrigation on surface climate in the Heihe River Basin, Northwest China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(15):7881-7895.
APA	Zhang, Xuezhen,Xiong, Zhe,&Tang, Qiuhong.(2017).Modeled effects of irrigation on surface climate in the Heihe River Basin, Northwest China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(15),7881-7895.
MLA	Zhang, Xuezhen,et al."Modeled effects of irrigation on surface climate in the Heihe River Basin, Northwest China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.15(2017):7881-7895.