太平洋低纬地区垂直环流圈与海温的季节变化

作者：赵黔源

单位：国家海洋局海洋环境预报中心

关键词：

分类号：

出版年·卷·期（页码）：1986·3·第一期（10-17）

摘要：

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。

In this paper the 200 Hpa and 850 Hpa wind fields at five statio-ns(i. e. Koror, Yap, Truk, Ponape and Majuro)at the lower latitudes of the western Pacific, are analyzed. Some important features of seasonal changes in the vertical circulation cells are revealed. It is found that the so-called walker circulation cell is strongest in May and weakest in September in annual cycle, and the Hadley circulation cell is strongest in February and weakest in September. Meanwhile, in annual cycle, the meridional circulation. cells are consistent with the south-north defference of sea surface temperature (SST), and to our surprise, the zonal circulation cells are consistent with the east-west difference of SST between the equatorial Indian and Pacific Oceans with the east-west difference of SST preceding cells by one month.It is shown that SST, not only in the eastern equatorial Pacifi-c, but also in the western equatorial Indian, has an effect on the zonal thermal circulation cell, the Walker circulation cell. Therefore, it is not complete to emphasize the significance of SST in the eastern equatorial Pacific only.

参考文献：

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