干旱区生态环境知识资源中心(Arid): Determining Regional-Scale Groundwater Recharge with GRACE and GLDAS

Arid

DOI	10.3390/rs11020154
	Determining Regional-Scale Groundwater Recharge with GRACE and GLDAS
	Wu, Qifan 1; Si, Bingcheng 1,2; He, Hailong 1; Wu, Pute 1
通讯作者	Si, Bingcheng ; He, Hailong
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2019
卷号	11 期号:2
英文摘要	Groundwater recharge (GR) is a key component of regional and global water cycles and is a critical flux for water resource management. However, recharge estimates are difficult to obtain at regional scales due to the lack of an accurate measurement method. Here, we estimate GR using Gravity Recovery and Climate Experiment (GRACE) and Global Land Data Assimilation System (GLDAS) data. The regional-scale GR rate is calculated based on the groundwater storage fluctuation, which is, in turn, calculated from the difference between GRACE and root zone soil water storage from GLDAS data. We estimated GR in the Ordos Basin of the Chinese Loess Plateau from 2002 to 2012. There was no obvious long-term trend in GR, but the annual recharge varies greatly from 30.8 to 66.5 mm year(-1), 42% of which can be explained by the variability in the annual precipitation. The average GR rate over the 11-year period from GRACE data was 48.3 mm year(-1), which did not differ significantly from the long-term average recharge estimate of 39.9 mm year(-1) from the environmental tracer methods and one-dimensional models. Moreover, the standard deviation of the 11-year average GR is 16.0 mm year(-1), with a coefficient of variation (CV) of 33.1%, which is, in most cases, comparable to or smaller than estimates from other GR methods. The improved method could provide critically needed, regional-scale GR estimates for groundwater management and may eventually lead to a sustainable use of groundwater resources.
英文关键词	water table fluctuation water storage fluctuation Loess Plateau Ordos Basin interannual groundwater recharge GRACE
类型	Article
语种	英语
国家	Peoples R China ; Canada
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000457939400051
WOS关键词	DATA ASSIMILATION SYSTEM ; WATER-TABLE FLUCTUATION ; SEMIARID LOESS PLATEAU ; SOIL-MOISTURE ; UNSATURATED ZONE ; GRAVITY RECOVERY ; TRITIUM PROFILES ; ARID REGIONS ; ORDOS BASIN ; HIGH-PLAINS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218330
作者单位	1.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China; 2.Univ Saskatchewan, Dept Soil Sci, Saskatoon, SK S7N 5C8, Canada
推荐引用方式 GB/T 7714	Wu, Qifan,Si, Bingcheng,He, Hailong,et al. Determining Regional-Scale Groundwater Recharge with GRACE and GLDAS[J]. 西北农林科技大学,2019,11(2).
APA	Wu, Qifan,Si, Bingcheng,He, Hailong,&Wu, Pute.(2019).Determining Regional-Scale Groundwater Recharge with GRACE and GLDAS.REMOTE SENSING,11(2).
MLA	Wu, Qifan,et al."Determining Regional-Scale Groundwater Recharge with GRACE and GLDAS".REMOTE SENSING 11.2(2019).