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集中程度函数及其初步应用
引用本文:王志仁,吴辉碇,吴德星.集中程度函数及其初步应用[J].海洋学报,2001,23(2):40-45.
作者姓名:王志仁  吴辉碇  吴德星
作者单位:1.国家海洋环境预报研究中心, 北京 100081
基金项目:国家自然科学基金项目(49876011).
摘    要: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.

关 键 词:集中程度函数    时空分布    盛行月
文章编号:0253-4193(2001)02-0040-06
收稿时间:2000/1/15 0:00:00
修稿时间:2000年1月15日

Concentrative function and its primary application
WANG Zhi-ren,WU Hui-ding and WU De-xing.Concentrative function and its primary application[J].Acta Oceanologica Sinica (in Chinese),2001,23(2):40-45.
Authors:WANG Zhi-ren  WU Hui-ding and WU De-xing
Institution:1.National Research Center for Marine Environmental Forecasts, Beijing 100081, China2.Ocean University of Qingdao, Qingdao 266003, China
Abstract: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.
Keywords:concentrative function  spatial and temporal distribution  storms  dense month
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