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Assessment of hydrological drought and its recovery time for eight tributaries of the Yangtze River (China) based on downscaled GRACE data
Zhang, Dan1; Liu, Xiaomang2; Bai, Peng2
2019
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
Volume568Pages:592-603
Corresponding AuthorLiu, Xiaomang(Liuxm@igsnrr.ac.cn)
AbstractHydrological drought is increasing under the impact of global change, which could have serious influences on the stability of ecological systems and water-dependent human activities in the affected regions. In this study, the total water storage (TWS) derived from the Gravity Recovery and Climate Experiment (GRACE) satellites from 2003 to 2012 was downscaled to a finer resolution by incorporating the output from a land surface model. The downscaled data was used to identify hydrological drought for eight tributaries of the Yangtze River in China. The trend in the water storage deficit based on the downscaled GRACE data ranged from -0.86 to 0.29 mm month(-1) for the eight tributaries from 2003 to 2012, among which the absolute largest value occurred in the Poyang Lake Basin. The eight tributaries experienced between four and seven hydrological droughts during the study period, and droughts in 2003, 2006 and 2011 occurred in all of the tributaries. The drought recovery rate for the eight tributaries was between 4.5 and 7.2 mm month(-1), and the average drought recovery time was between 3.6 and 5.7 months. Tributaries with a high climate moisture index had low frequencies of drought occurrence but had long drought durations and large drought severities, resulting in long drought recovery times. Additionally, the impacts of human activity on hydrologic processes intensified significantly from 2003 to 2012, such as water storage in reservoirs and water consumption, leading to spatial differences in regional drought characterizations. The results are useful for the understanding of the mechanism of hydrological drought formation and the extension of GRACE applications in medium and small-scale catchments.
KeywordGRACE data Downscaling Water storage deficit Drought recovery time
DOI10.1016/j.jhydrol.2018.11.030
WOS KeywordTERRESTRIAL WATER STORAGE ; SATELLITE-OBSERVATIONS ; HUMAN IMPACT ; BASIN ; LAKE ; MODEL ; EVAPORATION ; SIMULATIONS ; DEPLETION ; PATTERNS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41771039] ; National Natural Science Foundation of China[41330529] ; National Natural Science Foundation of China[41571023]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEngineering ; Geology ; Water Resources
WOS SubjectEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000455694400046
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/50524
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Xiaomang
Affiliation1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Key Lab Watershed Geog Sci, Nanjing, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Dan,Liu, Xiaomang,Bai, Peng. Assessment of hydrological drought and its recovery time for eight tributaries of the Yangtze River (China) based on downscaled GRACE data[J]. JOURNAL OF HYDROLOGY,2019,568:592-603.
APA Zhang, Dan,Liu, Xiaomang,&Bai, Peng.(2019).Assessment of hydrological drought and its recovery time for eight tributaries of the Yangtze River (China) based on downscaled GRACE data.JOURNAL OF HYDROLOGY,568,592-603.
MLA Zhang, Dan,et al."Assessment of hydrological drought and its recovery time for eight tributaries of the Yangtze River (China) based on downscaled GRACE data".JOURNAL OF HYDROLOGY 568(2019):592-603.
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