摘要
根据1949—1979年逐月资料,指出赤道东太平洋海表温度与西太平洋台风发生频率之间存在明显的时滞遥相关。通过个例对比与长期资料验证,揭露了当赤道东太平洋海表温度较正常为冷(暖)时,西太平洋低纬地区低空东西风辐合区两边的两个反方向的纬圈环流加强(减弱),辐合区两边的东西风加强(减弱),在菲律宾以东台风发生源地上的赤道辐合带(ITCZ)出现频繁(不活跃),因而台风生成偏多(偏少)。
Based on the monthly data of thirty years in 1949-1979,we revealed that there are time lag correlations between the freguency of typhoons of the west Pacific and east equatorial Pacific sea surface temperature.It is indicated when the east equatorial Pacific sea surface temperature is colder(warmer)than normal,the latitudinal circulations are stronger(weaker)than normal.These circulations are situated on the both sides of the west Pacific convergence zone formed principally by the east and west wind in the lower atmosphere.As a result,the inter-tropical convergence zone related with the formation of typhoons is more active(less active).
作者
潘怡航
Pan yi-hang(Institute of Atmospheric Physics,Academia Sinica)
出处
《气象学报》
1982年第1期24-34,共11页
Acta Meteorologica Sinica
