天顶色坐标、色温与大气透射率的关系的观测和分析

Observation and Analysis of Relationship between Colour Co ordinates,Colour Temperature of Zenith and Atmospheric Transimissivity

本文介绍了用照度计和多波段辐射计对北京冬季大气状况进行观测的结果和分析。结果显示天空辐射接近黑体辐射，天顶色坐标与大气透射率存在单调的二次曲线相关关系，文章具体给出观测结果的拟合公式。

In this paper are reported,the observation results and analyisis on the state of atmosphere in Beijing during winter.The results have been obtained by means of an illuminance meter and a multichannel photometer.They shows that the radiation of the sky is closely to that of the blackbody.There is a binomial relationship between the colour co ordinate of the zenith and the atmospheric transmissivity.We obtained the function corresponding to the observation data and divided into five groups on the CIE choromaticity diagram,each of them corresponding to one type of condition of the atmosphere.