Spatio-temporal variability of terrestrial water storage in the Yangtze River Basin: Response to climate changes  

作　　者：Yaoguo Wang Zhaoyang Sun Qiwen Wu Jun Fang Wei Jia 

机构地区：[1]Luoyang Urban Planning&Architecture Design Research Institute Co.,Ltd.,Luoyang 471000,China [2]Luoyang Polytechnic,Luoyang 471000,China [3]School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China [4]The Seventh Engineering Company of CCCC Fourth Harbor Engineering Co.,Ltd.,Guangzhou 511455,China

出　　处：《Geodesy and Geodynamics》2023年第3期201-211,共11页大地测量与地球动力学（英文版）

基　　金：funded by the Key Research Project of Higher Education Institutions in Henan Province (20B480004);the Scientific and Technological Project of Henan Province (222102320258);NSFCs (Grant Nos. 41904012 and 41974022);China Postdoctoral Science Foundation (2020T130482,2018M630879);the Fundamental Research Funds for Central Universities (2042020kf0008)

摘　　要：The Yangtze River Basin(YRB)is an important region for China's economic development.However,it has a complex terrain layout,most of which is affected by monsoon weather,and the geographical and temporal distribution of water resources is severely unbalanced.Therefore,the detailed analysis of spatio-temporal water mass changes is helpful to the development and rational utilization of water resources in the YRB.In this study,the variation of terrestrial water storage(TWS)is monitored by Gravity Recovery and Climate Experiment(GRACE)satellite gravity.We find that the University of Texas Center for Space Research(CSR)solution shows a notable difference with the Jet Propulsion Laboratory(JPL)in space,but the general trend is consistent in time series.Then the GRACE inferred water mass variation reveals that the YRB has experienced several drought and flood events over the past two decades.Global Land Data Assimilation System(GLDAS)results are similar to GRACE.Furthermore,the overall precipitation trend tends to be stable in space,but it is greatly influenced by the strong El Nino-~Southern Oscillation(ENSO),which is the response to global climate change.The upper YRB is less affected by ENSO and shows a more stable water storage signal with respect to the lower YRB.

关 键 词：Yangtze river basin Terrestrial water storage GRACE Time-varying gravity field 

分 类 号：P223[天文地球—大地测量学与测量工程] P332[天文地球—测绘科学与技术]