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DOI	10.1029/2019JD031764
	Effects of Groundwater Pumping on Ground Surface Temperature: A Regional Modeling Study in the North China Plain
	Yang C.; Li H.-Y.; Fang Y.; Cui C.; Wang T.; Zheng C.; Leung L.R.; Maxwell R.M.; Zhang Y.-K.; Yang X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:9
英文摘要	Overexploitation of groundwater (GW) in the North China Plain (NCP) since the 1960s has many environmental consequences. However, mechanistic understanding of this perturbation remains limited, particularly at the regional scale. In this study, the coupled ParFlow.CLM model representing subsurface and land surface processes and their interactions was applied in the NCP at high spatiotemporal resolutions. The model was validated using the water and energy fluxes reported in previous studies and from the JRA-55 reanalysis. Numerical experiments were designed to examine the impacts of GW pumping and irrigation on the ground surface temperature (GST). Results show significant effects of GW pumping on GST in the NCP. Generally, the subsurface acts as a buffer to temporal variations in heat fluxes at the land surface, but long-term pumping can gradually weaken this buffer, leading to increases in the spatiotemporal variability of GST, as exemplified by hotter summers and colder winters. Considering that changes of water table depth (WTD) can significantly affect land surface heat fluxes when WTD ranges roughly between 0.01 and 10 m, the 0.5-m/yr increase of WTD simulated by the model due to pumping can continue to increase the regional averaged WTD and hence, perturb GST for about 20 years after GW pumping began in the NCP, before WTD exceeds 10 m. The variations of GST are expected to increase faster initially and gradually slow down due to the nonlinear behaviors of GST with WTD. The findings from this study in the NCP may also have implications for other regions with GW depletion. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	ground surface temperature; groundwater pumping; integrated hydrologic modeling; ParFlow.CLM; the North China Plain
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186032
作者单位	Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Cullen College of Engineering, University of Houston, Houston, TX, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Taihu Lake Laboratory Ecosystem Research Station, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China; Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Water Cycle and Related Land Surface Processes, University of Chinese A...
推荐引用方式 GB/T 7714	Yang C.,Li H.-Y.,Fang Y.,et al. Effects of Groundwater Pumping on Ground Surface Temperature: A Regional Modeling Study in the North China Plain[J],2020,125(9).
APA	Yang C..,Li H.-Y..,Fang Y..,Cui C..,Wang T..,...&Yang X..(2020).Effects of Groundwater Pumping on Ground Surface Temperature: A Regional Modeling Study in the North China Plain.Journal of Geophysical Research: Atmospheres,125(9).
MLA	Yang C.,et al."Effects of Groundwater Pumping on Ground Surface Temperature: A Regional Modeling Study in the North China Plain".Journal of Geophysical Research: Atmospheres 125.9(2020).