Low-frequency variability of terrestrial water budget in China using GRACE satellite measurements from 2003 to 2010

Geodesy and Geodynamics

Kaixuan Kang¹  Zhengbo Zou¹  Hui Li¹  Peng Peng² 

[1] Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan 430071, China;State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China;

关键词: Gravity recovery and climate experiment (GRACE);    Terrestrial water storage;    Drought event;    Global hydrology models;    Water vapor transport;    Drought event;    Empirical orthogonal function (EOF);    El Nino-southern oscillation (ENSO);   

DOI  :  10.1016/j.geog.2015.12.001

来源: DOAJ

【 摘 要 】

Mass variations in terrestrial water storage (TWS) obtained from eight years of satellite data from the Gravity Recovery and Climate Experiment (GRACE) are used to describe low frequency TWS through Empirical Orthogonal Function (EOF) analysis. Results of the second seasonal EOF mode show the influence of the Meiyu season. Annual variability is clearly shown in the precipitation distribution over China, and two new patterns of interannual variability are presented for the first time from observations, where two periods of abrupt acceleration are seen in 2004 and 2008. GRACE successfully measures drought events in southern China, and in this respect, an association with the Arctic Oscillation and El Nino-Southern Oscillation is discussed. This study demonstrates the unique potential of satellite gravity measurements in monitoring TWS variations and large-scale severe drought in China.

【 授权许可】

Unknown