• 论文 •

### 北京地区太阳直接辐射的分光能量

1. 中国科学院地理研究所, 北京
• 出版日期:1987-07-20 发布日期:1987-07-20

### THE SPECTRAL ENERGY OF THE SOLAR DIRECT RADIATION IN BEIJING

Zhou Yunhua

1. Institute of Geography, Academia Sinica, Beijing
• Online:1987-07-20 Published:1987-07-20

Abstract: By means of thermoelectric Actinometer mounted with eight coloured glass filters, the spectral irradiance of the solar direct radiation were measured in Beijing during 1977-1978 and 1983-1984. Based on 1423 series of data obtained from the observations, the effect of the solar elevation, observation time and seasons as well as aerosol and water vapor on the spectral irradiance are analysed. The observation results were also compared with that obtained in the Qingzang Plateau. Finally, the cmpirical formulas which have been proposed by the author for estimating ultraviolet and visible direct radiation are examined by using all observation data. The result is very satisfactory.