南海中北部次表层水温与南海夏季风和广东旱涝

SUBSURFACE SEA TEMPERATURE IN NORTH AND MIDDLE SOUTH CHINA SEA, MONSOON, DROUGHT AND FLOOD IN GUANGDONG

关键词:  南海  次表层水温  夏季风  广东旱涝

Key words:  South China Sea  subsurface layer sea temperature  summer monsoon  drought and flood in Guangdong

摘要:

为了解南海与季风的相互作用,用实测资料分析了南海中北部次表层水温与南海夏季风和广东旱涝的关系。结果表明:南海中北部次表层水温在2月偏暖(冷)时,南海夏季风爆发偏早(晚)是主要现象;南海中北部次表层水温在8月偏暖(冷)时,南海夏季风结束偏晚(早)是主要现象。西沙平均水温时间系列的距平值自1978年1～3月开始有上升趋势,年平均水温距平值上升趋势出现在1979年。结论:南海中北部在2月次表层水温持续编暖(冷)时,夏季风爆发偏早(晚)、广东出现洪涝(干旱)灾害是主要现象。

Abstract:

In order to understand the interactions between the South China Sea and the monsoon,with observed data,this paper analyze the inferior surface layer sea temperature in the north of South China Sea,the South China Sea summer monsoon as well as the drought & flood disaster in Guangdong,find the relationships among them.The result indicates that,when the subsurface layer sea temperature in the north of South China Sea is warmer(colder) in February,the South China Sea summer monsoon erupts earlier(later);when subsurface layer sea temperature in the north of South China Sea is warmer(colder) in August,the South China Sea summer monsoon finished earlier(later).The anomalies of monthly average sea temperature time series in Xisha started to have the trend of ascending from January to March,1978.An upward trend of annual mean sea temperature appeared in 1979.In the last part,this paper concludes that when the subsurface layer sea temperature in the north of South China Sea is warmer(colder) in February,the South China Sea summer monsoon erupts earlier(later),flooding(drought) disaster appears in Guangdong.