近54年广东沿海海表温度最低、最高年平均成因分析

Analysis of the Causation of Annual Mean Minimum and Maximum Sea Surface Temperature in Coastal Guangdong Province over the Past 54 Years

根据1960—2013年广东省沿海5个海洋站的实测月平均海表温度(SST)及南海高压特征指数、太阳总辐射、季风、全球年平均地表温度距平等资料,采用比较方法,分析近54年最低、最高年平均SST的季节变化差异及其形成原因,得出近54年来年平均最低、最高SST分别为1984年(SST距平为-0.95℃)与2002年(距平为+0.91℃);SST差异主要发生于冬、春季月份,其形成原因与全球变暖、南海高压强弱变化、太阳总辐射强度、冬季风强度等季节变化有密切关系。

Based on the 1960- 2013 data of monthly mean sea surface temperature（ SST） observed at five marine stations in coastal Guangdong province as well as the indexes of the South China Sea high（ SCSH） characteristics,total solar radiation,monsoon,and global annual mean surface temperature anomalies,this paper compares and analyzes the differences in the seasonal change of minimum and maximum annual mean SST over the 54 years and their causation and determines that the minimum happened in 1984（ with the SST anomaly at- 0. 95 ℃） and maximum in 2002（ with the SST anomaly at ＋ 0. 91 ℃） during this period and the SST differences mainly occurred in the months of winter and spring,which are closely related with the global warming,changes in the SCSH,and the seasonal intensity changes in total solar radiation and winter monsoon.