干旱区生态环境知识资源中心(Arid): Assessment and attribution of China's droughts using an integrated drought index derived from GRACE and GRACE-FO data

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DOI	10.1016/j.jhydrol.2021.127170
	Assessment and attribution of China's droughts using an integrated drought index derived from GRACE and GRACE-FO data
	Deng, Shanshan; Liu, Suxia; Mo, Xingguo
通讯作者	Liu, SX (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	603
英文摘要	Different definitions of drought from multiple perspectives complicate drought studies. Studying droughts from an integrated perspective helps to better understand their evolutions and driving factors, but few studies have taken such a comprehensive approach in China. This study conducted an assessment and attribution analysis of droughts across China from 2002 to 2020 based on an integrated drought index derived from observed terrestrial water storage (TWS) data. First, the latest solution of satellite gravimetry data was employed to analyze spatiotemporal changes in TWS deficits. Second, droughts associated with TWS deficits were detected using the Water Storage Deficit Index (WSDI). Third, an attribution analysis was conducted using the stepwise regression method to determine the driving factors of droughts. The results show that China's TWS decreases at a significant rate (-1.79 +/- 0.43 mm/yr, P < 0.05) from 2002 to 2020. The droughts detected by WSDI can generally combine the durations and intensities of the meteorological, hydrological, agricultural, and socioeconomic drought indices, which provides a comprehensive perspective. The severity and intensity of countrywide drought have been at least doubled, especially in the northern regions (including the Northern Arid and Semiarid region, the Huang-Huai-Hai Plain, and the Loess Plateau). The attribution analysis revealed that both climate change and anthropogenic impacts played a dominant role in driving intensified droughts. Decreasing precipitation explains 20% to nearly 100% of TWS deficits across the Huang-Huai-Hai Plain. Human water use, especially for agriculture, has also exacerbated droughts in the water-scarce northern regions of China. The WSDI was highly correlated with the water supply for human activities in the Northern Arid and Semiarid region and the Loess Plateau. This study shows the need to adopt measures to limit human water use beyond the regional capacity.
英文关键词	Terrestrial water storage Drought China Human impact Climate change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000731711600005
WOS关键词	TERRESTRIAL WATER STORAGE ; YANGTZE-RIVER BASIN ; SATELLITE-OBSERVATIONS ; CLIMATE-CHANGE ; EXTREME DROUGHT ; SEVERITY INDEX ; PRECIPITATION ; PATTERNS ; MOISTURE ; MODELS
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373972
作者单位	[Deng, Shanshan; Liu, Suxia; Mo, Xingguo] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China; [Deng, Shanshan] Guangxi Univ, Coral Reef Res Ctr China, Sch Marine Sci, Guangxi Lab Study Coral Reefs South China Sea, Nanning 530004, Peoples R China; [Deng, Shanshan; Liu, Suxia; Mo, Xingguo] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China; [Liu, Suxia; Mo, Xingguo] Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Deng, Shanshan,Liu, Suxia,Mo, Xingguo. Assessment and attribution of China's droughts using an integrated drought index derived from GRACE and GRACE-FO data[J],2021,603.
APA	Deng, Shanshan,Liu, Suxia,&Mo, Xingguo.(2021).Assessment and attribution of China's droughts using an integrated drought index derived from GRACE and GRACE-FO data.JOURNAL OF HYDROLOGY,603.
MLA	Deng, Shanshan,et al."Assessment and attribution of China's droughts using an integrated drought index derived from GRACE and GRACE-FO data".JOURNAL OF HYDROLOGY 603(2021).