不同天气形势下南海和西太平洋热带海域的辐射特征

RADIATION CHARACTERISTICS OF SOUTH CHINA SEA AND TROPICAL WESTERN PACIFIC WITH DIFFERENT WEATHER

摘要:

本文分析1984—1986年在南海和西太平洋热带海域考察期间实测的太阳辐射资料;发现在同一海区中总辐射值随季节,天气形势的不同有明显的差异。其中最大值出现在副热带高压中心控制的时候,最小值出现在西南季风潮天气形势下;副热带高压南部边缘的总辐射值比副高中心的值小,原因是总辐射值白天总云量的变化有密切关系。

Abstract:

Observed data in a survey in 1984-1986 of solar radiation is analysed for tropical western Pacific and South China Sea. It is shown that total radiation for the same marine region differs in amount significantly with season and we ather situation. The maximum occurs when the region is within the central area of the subtropical high while the minimum is observed if it is influenced by a surge of the southwestly monsoon. The total radiation is always greater on the southern edge of the subtropical high than in the center of it,due to the close radiative association with the variation in total cloudness in daytime.