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《Journal of University of Chinese Academy of Sciences》 2016-01
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Characteristics of mesoscale eddies in South China Sea

HUANG Yawen;HUA Lijuan;ZHONG Linhao;FENG Shide;Key Laboratory of Computational Geodynamics,University of Chinese Academy of Sciences;Key Laboratory of Regional Climate-Environment for East Asia ( RCE-TEA) ,Institute of Atmospheric Physics,Chinese Academy of Sciences;Key Laboratory of Cloud-Precipitation Physics and Severe Storms ( LACS) ,Institute of Atmospheric Physics,Chinese Academy of Sciences;  
A dataset of mesoscale eddies from October 1992 to April 2012 is used to study eddies in South China Sea( SCS). Eddies mainly generate along northeast-southwest direction in SCS and most of them prefer a westward propagation with meridional deflections. Eastward propagating eddies occur more frequently on the southwest of Luzon and the east of Vietnam,and are mainly controlled by the circulation in SCS. Seasonal variations of eddy distribution show inconsistent characteristics in different regions of SCS. Cyclonic( anticyclonic) eddies prefer to occur during spring( winter) on the southwest of Taiwan and southwest of Luzon. While in the northwest of Luzon and southeast of Vitnam,cyclonic eddies prefer winter and anticyclonic eddies more likely in autumn and summer,respectively. Correlation analysis shows that wind stress curl can hardly benefit the formation of eddies directly while the geographic vorticity plays a significant role.
【Fund】: Supported by the National Science Foundation of China(41275064 41475072 and 41175057)
【CateGory Index】: P732.7
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