南海夏季风爆发早晚的越赤道气流特征

Characteristics of the Cross-equatorial Flow in the Years with Earlier and Later Onset of South China Sea Summer Monsoon

根据国家气候中心提供的南海夏季风爆发期典型偏早（1966、1972、1996、2000、2001年）和偏晚年份（1970、1973、1987、1989、1991年）,利用ECMW F再分析1-5月逐日经向风资料,计算5个通道越赤道气流和越赤道乞流总量的距平值;探讨越赤道气流与南海夏季风爆发早晚的关系与特征。为预测南海夏季风爆发早晚提供判据。

According to the years with earlier South China Sea summer monsoon （SSCMS） onset and those with later SCSSM provied by the National Climatic Center, using the reanalysis daily v wind data from ECMWF from January to May, five channels of the cross-equatorial flow and the deviation of their amount are calculated. And the relationship between the cross-equatorial flow and the SCSSM and its characteristics is studied to provide a criterion to predict the year with earlier or later onset of South China Sea summer monsoon.