DOI: 10.1029/2017JD027468
Scopus记录号: 2-s2.0-85048964079
论文题名: Statistical Downscaling of GRACE-Derived Groundwater Storage Using ET Data in the North China Plain
作者: Yin W. ; Hu L. ; Zhang M. ; Wang J. ; Han S.-C.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 11 起始页码: 5973
结束页码: 5987
语种: 英语
英文关键词: ET
; GRACE
; GWS
; statistical downscaling method
; the Beijing Plain
Scopus关键词: anomaly
; correlation
; downscaling
; evapotranspiration
; GRACE
; groundwater resource
; heterogeneity
; spatial resolution
; statistical analysis
; water management
; water storage
; Beijing Plain
; Beijing [China]
; China
; North China Plain
英文摘要: Due to coarse spatial resolution, the application of Gravity Recovery and Climate Experiment (GRACE) data in local groundwater resource management has been limited. To overcome this issue, a downscaling approach is presented to improve the spatial resolution of GRACE-derived groundwater storage anomalies using evapotranspiration (ET) data. The statistical downscaling method is only applied in areas where there is a strong relationship between GRACE-derived groundwater storage (GWS) and ET, and the relationship can be established under different spatial resolutions. In this study, GWS anomalies are downscaled from 110 km to 2 km in the North China Plain, capturing subgrid heterogeneity in groundwater storage changes. The downscaled results are further validated using data from 111 observation wells from 2003 to 2014 in the Beijing Plain. The results show that the in situ groundwater levels agree with the Gravity Recovery and Climate Experiment (GRACE) downscaled results for the Beijing Plain in both interannual and monthly scales, with the correlation coefficient of 0.94 and 0.80, respectively. The correlation coefficients vary from 0.63 to 0.78, in 10 of the 13 Beijing Plain administrative regions. The regional downscaling approach employed in this study may be readily integrated into local water resources planning activities. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113722
Appears in Collections: 气候减缓与适应
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作者单位: College of Water Sciences, Beijing Normal University, Beijing, China; Engineering Research Center of Groundwater Pollution Control and Remediation of Ministry of Education, Beijing Normal University, Beijing, China; School of Engineering, University of Newcastle, Callaghan, NSW, Australia
Recommended Citation:
Yin W.,Hu L.,Zhang M.,et al. Statistical Downscaling of GRACE-Derived Groundwater Storage Using ET Data in the North China Plain[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(11)