Zhao Xiao-yan, He Jie, Zuo Hao-yi, Liang Hui-min, Yang Jing-guo
Department of Physics, Sichuan University, Chengdu 610064, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2007 May;27(5):846-9.
The present paper reports a new type of ultraviolet CCD optical multi-channel analyzer and its application to detecting solar ultraviolet irradiance spectrum. Spectral detecting range of 200-1 100 nm, spectral resolution of 0.1 nm and detecting sensitivity of 0.02 lx were reached in this instrument. The solar spectra of UVB and UVA were measured in real time in Chengdu area. The measurement results have good correlation with the detection using normal solar ultraviolet irradiance detector. Primary analysis on the detection results of solar spectra in UVB and UVA indicated that in the morning and in the afternoon the irradiance of solar ultraviolet is smaller than that at noon, and reverse correlation holds for the change of SZA (Solar Zenith Angle). In different wavelength interval of UVA and UVB, generally, the radiation flux of long wavelength is greater than that of short. Clouds and aerosols in the atmosphere have important influence on ultraviolet irradiance.
本文报道了一种新型的紫外电荷耦合器件（CCD）光学多通道分析仪及其在太阳紫外辐照度光谱检测中的应用。该仪器的光谱检测范围为200 - 1100纳米，光谱分辨率为0.1纳米，检测灵敏度为0.02勒克斯。在成都地区实时测量了UVB和UVA的太阳光谱。测量结果与使用常规太阳紫外辐照度探测器的检测结果具有良好的相关性。对UVB和UVA太阳光谱检测结果的初步分析表明，上午和下午的太阳紫外辐照度小于中午，且与太阳天顶角（SZA）的变化呈负相关。在UVA和UVB的不同波长区间，一般来说，长波长的辐射通量大于短波长。大气中的云和气溶胶对紫外辐照度有重要影响。
