Study on Property of Spectral Solar Radiation to Evaluate Influence of Atmosphere

从1995年4月到1996年3月，对太阳光谱总辐射和光谱直接辐射进行了测量。1)对云量为0~6的晴天和云量为6~10的阴天的太阳总辐射谱进行了分类，并将其分为夏季、冬季和1年三种类型。这些数据被整理成每个等级的太阳总辐射的平均光谱，范围是100W/m^2，对应于它的总辐射。同时，在晴天和阴天都可以估计总辐射的光谱，误差率不到30%。对于太阳直接辐射，也得到了与上述相同的结果。2)用峰值除以总辐射的每一级的光谱代表晴天和阴天的光谱性质作为标准。3)大气中臭氧、水汽和气溶胶引起的浑浊对辐射光谱的影响，4)大气中含有少量的二氧化碳和废气对0.3-3.2微米波段的光谱没有影响。5)火山喷发产生的废气吸收太阳辐射，这对利用太阳能是很重要的，因为气溶胶影响0.3-1.0微米的波长。

From April 1995 to March 1996, the spectral total and spectral direct solar radiation were measured. The results obtained by analyzing the data collected are as follows :1) The measurements of spectra of the total solar radiations on a clear day with cloud amount of 0 to 6 and on a cloudy day with cloud amount of 6 to 10 were processed by classifying into three type of seasons of summer, winter and one year. The data were arranged into the spectra of the total solar radiation averaged over each rank ranged by 100 W/m^2 corresponding its total radiation. Consecuently, the spectra of toatl radiation on both clear and cloudy days could be estimated with an error rate less than 30 percent. On the direct solar radiation, the same results as above were also obtained.2) The spectra at each rank of the total radiation normalized by dividing by the peak value represent the spectral property as a standard on the clear and cloudy days.3) Turbidity due to ozone, water vapor and aerosol in the atmosphere affect to tha spectra of the radiation, and these agreed with the result of the equation of Bird's model.4) Small amount of carbon dioxide and exhaust gas contained in the atmosphere does not so influence over the wavelength 0.3-3.2 mum of the spectra.5) The exhuast gas due to volcanic explosion absorbs the solar radiation which is important to use solar energy because the aerosol affects the wavelength of 0.3-1.0 mum.