Irrigation cooling effect on land surface temperature across China based on satellite observations

doi:10.1016/j.scitotenv.2019.135984

	Irrigation cooling effect on land surface temperature across China based on satellite observations
	Yang, Qiquan 1; Huang, Xin 1,2; Tang, Qiuhong 3,4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-02-25
卷号	705 页码:10
关键词	Irrigated area Remote sensing Observational evidence Spatiotemporal variation Google Earth Engine
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.135984
通讯作者	Huang, Xin(xhuang@whu.edu.cn) ; Tang, Qiuhong(tangqh@igsnrr.ac.cn)
英文摘要	The effect of irrigation on temperature has attracted much attention because its cooling effect may mask the warming due to other factors, such as greenhouse gas forcing. Although many studies have examined the irrigation cooling effect (ICE) based on near-surface air temperature from meteorological observations or climate model simulations, few studies have directly addressed the effect of irrigation on land surface temperature (LST), which is closely linked to the surface energy balance and near-surface air temperature. In this paper, an ICE detection (ICED) method is proposed to assess the effect of irrigation on LST using the Moderate Resolution Imaging Spectroradiometer (MODIS) products across China. The magnitude of the ICE is calculated as the 1ST difference between irrigated area and adjacent non-irrigated area in the self-adaptive moving window determined by the ICED method. The results show that irrigation cools daytime LST by 1.15 K, and cools nighttime LST by 0.13 K, on average, across irrigated areas in China. The effect of irrigation on LST differs greatly among the climate zones and seasons, characterized by the enhanced ICE in arid regions and the growing season. In the arid climate zone, nearly all the irrigated areas show a lower daytime LST than the adjacent non-irrigated areas, leading to a strong ICE magnitude of >6 K in the growing season. In the humid climate zone, the impact of irrigation on 1ST is generally negligible, with a magnitude around zero throughout the year. This study provides observational evidence and a comprehensive assessment of the effect of irrigation on LST. The proposed ICED method has the potential to be used to study the spatiotemporal variation of the effect of irrigation on 1ST over other regions with intensive irrigation. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41790424] ; National Natural Science Foundation of China[41771360] ; National Natural Science Foundation of China[41971295] ; National Program for Support of Top-notch Young Professionals ; Hubei Provincial Natural Science Foundation of China[2017CFA029] ; National Key R&D Program of China[2016YFB0501403] ; Shenzhen Science and Technology Program[JCYJ20180306170645080]
WOS关键词	LOCAL BACKGROUND CLIMATE ; URBAN HEAT-ISLAND ; HUAI-HAI PLAIN ; AGRICULTURAL IRRIGATION ; TEMPORAL TRENDS ; AIR-TEMPERATURE ; VALIDATION ; MODIS ; IMPACTS ; CITIES
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000508129700157
资助机构	National Natural Science Foundation of China ; National Program for Support of Top-notch Young Professionals ; Hubei Provincial Natural Science Foundation of China ; National Key R&D Program of China ; Shenzhen Science and Technology Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/131477]
专题	中国科学院地理科学与资源研究所
通讯作者	Huang, Xin; Tang, Qiuhong
作者单位	1.Wuhan Univ, Sch Remote Sensing & Informat Engn, Wuhan 430079, Peoples R China 2.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Qiquan,Huang, Xin,Tang, Qiuhong. Irrigation cooling effect on land surface temperature across China based on satellite observations[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,705:10.
APA	Yang, Qiquan,Huang, Xin,&Tang, Qiuhong.(2020).Irrigation cooling effect on land surface temperature across China based on satellite observations.SCIENCE OF THE TOTAL ENVIRONMENT,705,10.
MLA	Yang, Qiquan,et al."Irrigation cooling effect on land surface temperature across China based on satellite observations".SCIENCE OF THE TOTAL ENVIRONMENT 705(2020):10.