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本文对西太平洋低纬地区科罗尔等五个测站200百帕与850百帕高度风场资料作了分析。结果表明,西太平洋低纬地区经向垂直环流圈的季节变化与所在经度范围内的南北向海温梯度的季节变化一致。而纬向垂直环流圈的季节变化则与印度洋——太平洋低纬地区东西向海温梯度的季节变化一致,并且落后于海温梯度一个月。这一现象表明,赤道太平洋东部与热带印度洋西部的海温变化均与太平洋低纬地区纬向环流的变化有密切的关系。单单强调赤道太平洋东部海温的热力作用是不够的。
This paper analyzes the wind field data of 200 hectopascals and 850 hectopascals at five stations in Koror in the western Pacific low latitudes. The results show that the seasonal variation of the meridional vertical circulation in the western Pacific low latitudes coincides with the seasonal variations of the north-south sea surface temperature gradient in the longitude region. The seasonal variation of zonal vertical circulation was consistent with the seasonal variation of east-west SST over the Indian Ocean-Pacific low latitudes, and lagged behind the SST gradient over one month. This phenomenon shows that the variation of SST in eastern equatorial Pacific and western tropical Indian Ocean is closely related to the change of zonal circulation in the low latitudes of the Pacific Ocean. It is not enough to emphasize the thermal effects of SST in the eastern equatorial Pacific alone.