集中程度函数及其初步应用

提出集中程度函数用于标定要素场时空分布的集中特性.该函数的特性及其可应用性得到了论证.从它在海洋和大气科学的初步应用中,可以发现一些有趣的现象.比如,各海域风暴的发生都有明显的季节集中性,风暴频繁发生的时间(盛行月)与地理位置有很好的对应,即,一年中,该盛行月所在位置在热带海域沿逆时针方向转一周.SST廓线和云在一年中的集中特性很相似.风暴发生越频繁,SST廓线和云越集中(越可能出现洪水).也许表明SST及其分布对云的形成起重要的作用;而且风暴的产生有利于云的集中.

Concentrative function and its primary application

In this paper, a concentrative function used in statistics is designed to present the extent in which an elementary field concentrates in the spatial distribution. Its characteristics are discussed and its availability proved. From its application in the atmospheric and oceanic sciences, we can find some interesting phenomena. For example, there is a clear seasonal concentricity in the occurrence of storms in every oceanic area in a year. The storms-dense months correspond to such an geographical place that goes around anticlockwise in the tropical oceanic areas. The spatial concentricity of SST and that of cloud change with time in a year in a similar way, that is, the higher occurrence of storms, the higher concentricity of SST and cloud, maybe the higher possibility of floods, which shows possibly that SST and its distribution play important role in the formation of cloud and that the formation of storms contributes to the concentration of the cloud.