Terrestrial water storage anomalies of yangtze river basin droughts observed by GRACE and connections with ENSO

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题名:	Terrestrial water storage anomalies of yangtze river basin droughts observed by GRACE and connections with ENSO
作者:	趙丰;Zhang, Zizhan;Chao, B.F.;Chen, Jianli;Wilson, C.R.
贡献者:	地球科學學院地球科學學系
关键词:	Anomalies;basins;China;Correlation;Drought;Droughts;El Nino;ENSO;Gages;Gauges;GRACE;GRACE (experiment);gravity;hydrologic models;Hydrology;La Nina;River basins;rivers;satellites;spring;summer;Water storage anomalies;watersheds;Yangtze River;Yangtze River Basin
日期:	2015-03-01
上传时间:	2026-04-23 11:47:44 (UTC+8)
出版者:	Elsevier;Elsevier B.V
摘要:	摘要： Two severe drought events occurred in the Yangtze River Basin (YRB) of China in the summer of 2006 and the spring of 2011. We examine terrestrial water storage (TWS) changes in the YRB for these events using time-variable gravity data from the GRACE satellite mission, in combination with observations made by TRMM satellite and in situ river gauges, along with hydrological models GLDAS and WGHM. GRACE TWS deficit estimates clearly quantify these YRB droughts, and a normalized GRACE-based TWS anomaly provides an alternative and useful hydro-climatological index in the YRB. We find that an El Niño (La Niña) event is significantly correlated with high (low) TWS in the YRB with a phase lead of ~7–8months, and the lower YRB is more sensitive to ENSO variability than the upper basin. The possible linkage between TWS anomaly and ENSO is raised in terms of physical mechanisms of influencing the precipitation over the YRB. •GRACE observed water storage deficits during Yangtze River Basin droughts.•Strong relationship found between water storage anomalies and ENSO events•Possible linkages discussed between water storage balance and ENSO variability 出版者： Elsevier B.V 出版日期： 2015-03 出處： Global and planetary change, 2015-03, Vol.126, p.35-45 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2015 Elsevier B.V. 識別號： ISSN: 0921-8181 識別號： EISSN: 1872-6364 識別號： DOI: 10.1016/j.gloplacha.2015.01.002
显示于类别:	[地球科學學系] 期刊論文

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