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DOI	10.1175/JCLI-D-18-0637.1
	Assessment of Three Common Methods for Estimating Terrestrial Water Storage Change with Three Reanalysis Datasets
	Deng, Shanshan ; Liu, Suxia 1; Mo, Xingguo
通讯作者	Liu, Suxia
来源期刊	JOURNAL OF CLIMATE
ISSN	0894-8755
EISSN	1520-0442
出版年	2020
卷号	33 期号:2 页码:511-525
英文摘要	Terrestrial water storage change (TWSC) plays a crucial role in the hydrological cycle and climate system. To date, methods including 1) the terrestrial water balance method (PER), 2) the combined atmospheric and terrestrial water balance method (AT), and 3) the summation method (SS) have been developed to estimate TWSC, but the accuracy of these methods has not been systematically compared. This paper compares the spatial and temporal differences of the TWSC estimates by the three methods comprehensively with the GRACE data during the 2002-13 period. To avoid the impact of different inputs in the comparison, three advanced reanalysis datasets are used, namely 1) the National Centers for Environmental Prediction (NCEP)-Department of Energy (DOE) Reanalysis II (NCEP R2), 2) the ECMWF interim reanalysis (ERA-Interim), and 3) the Japanese 55-Year Reanalysis (JRA-55). The results show that all estimates with PER and AT considerably overestimate the long-term mean on a regional scale because the data assimilation in the reanalysis opens the water budget. The difficulty of atmospheric observation and simulation in arid and polar tundra regions is the documented reason for the failure of the AT method to represent the TWSC phase over 30% of the region found in this study. Although the SS result exhibited the best overall agreement with GRACE, the amplitude of TWSC based on SS differed substantially from that of GRACE and the similarity coefficient of the global distribution between the SS-derived estimate and GRACE is still not high. More detailed considerations of groundwater and human activities, for example, irrigation and reservoir impoundments, can help SS to achieve a higher accuracy.
英文关键词	Hydrology Water budget balance
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000502749100002
WOS关键词	SEASONAL-VARIATIONS ; TEMPORAL VARIATION ; RIVER-BASIN ; GRACE ; AMAZON ; MODEL ; ASSIMILATION ; PERFORMANCE ; DROUGHT ; BALANCE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
EI主题词	2020-01-01
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312141
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Sino Danish Coll, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Deng, Shanshan,Liu, Suxia,Mo, Xingguo. Assessment of Three Common Methods for Estimating Terrestrial Water Storage Change with Three Reanalysis Datasets[J]. 中国科学院地理科学与资源研究所,2020,33(2):511-525.
APA	Deng, Shanshan,Liu, Suxia,&Mo, Xingguo.(2020).Assessment of Three Common Methods for Estimating Terrestrial Water Storage Change with Three Reanalysis Datasets.JOURNAL OF CLIMATE,33(2),511-525.
MLA	Deng, Shanshan,et al."Assessment of Three Common Methods for Estimating Terrestrial Water Storage Change with Three Reanalysis Datasets".JOURNAL OF CLIMATE 33.2(2020):511-525.