%0 Journal Article %T ANOMALOUS CHARACTERISTICS OF THE OCEAN CIRCULATION IN SOUTH CHINA SEA DURING THE El NIO EVENTS
El Nio事件期间南海环流的异常特征 %A XING Yan-Song %A CHENG Guo-Sheng %A SHU Ye-Qiang %A WANG Dong-Xiao %A
邢延松 %A 程国胜 %A 舒业强 %A 王东晓 %J 海洋与湖沼 %D 2012 %I %X Based on the CORA(China Ocean ReAnalysis) data sets,we analyze the seasonal characteristics of the circulation in the South China Sea(SCS) and its response to El Nio.The winter circulation in the SCS is overall cyclonic.The summer circulation can be divided into two parts,cyclonic in the north and anti-cyclonic in the south.We analyze the circulation anomalies in the SCS using the MV-EOF method.The first and second space modes of the circulation represent winter and summer circulation,respectively.The corresponding temporal coefficients have clear relationship with the Nio3.4 index.By analyzing the current and stream function anomaly during the El Nio events from 1986 to 2008,we find that the circulation changes during the different stages of the El Nio.In August,the stream function anomaly shows an anti-cyclonic circulation in the southern SCS and a cyclonic circulation in the northern part,strengthening the background summer circulation.The northern cyclonic circulation anomaly becomes larger as El Nio event goes on.By December,anti-cyclonic circulation anomalies prevail in the whole SCS except for the southeastern region,weakening the background winter circulation.In next August the circulations in the SCS were obviously weakened. %K The South China Sea circulation %K Seasonal characteristic %K MV-EOF %K El Nio %K Stream function anomaly
南海环流 %K 季节特征 %K MV-EOF %K El %K Nio %K 异常流函数 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=10F18692CD69EACA2DF7FC109993D35C&aid=115D7742A99E5C95046D26D0FF4150C0&yid=99E9153A83D4CB11&iid=0B39A22176CE99FB&sid=BC084ACE66B62CC8&eid=79D2EF35F60110C2&journal_id=0029-814X&journal_name=海洋与湖沼&referenced_num=0&reference_num=0