南半球气候锋的统计特征分析

THE ANALYSIS OF STATISTICAL FEATURES ON CLIMATIC FRONT IN THE SOUTHERN HEMISPHERE

本文利用 1995 - 97年 NCEP全球 2 .5°× 2 .5°经纬网格点再分析资料对南半球的温度梯度和厚度梯度的分布特征进行了分析 ,给出了南半球副热带洋面上锋面的产生与厚度、温度梯度的关系 ,从而得出南半球气候锋活动规律、发生源地及其基本特征 。

In this paper, the reanalyzed data of NCEP global latitude-longitude grid of 2.5°×2.5°from 1995 to 1997 are used to reanalyze distribution of temperature gradient and thickness gradient of Southern Hemisphere.From this,we can conclude that firstly the generation of front over subtropical ocean in South Hemisphere is relative to thickness gradient and temperature gradient.Secondly ,we find out rules and primary features of climatic front in South Hemisphere as well as its foundation for existence.