光谱学与光谱分析 |
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Optical Multi-Channel Detection and Analysis on Solar Ultra-Violet Irradiance Spectrum |
ZHAO Xiao-yan,HE Jie*,ZUO Hao-yi,LIANG Hui-min,YANG Jing-guo |
Department of Physics, Sichuan University, Chengdu 610064, China |
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Abstract 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.
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Received: 2005-12-29
Accepted: 2006-03-28
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Corresponding Authors:
HE Jie
E-mail: schjdexx@sohu.com
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Cite this article: |
ZHAO Xiao-yan,HE Jie,ZUO Hao-yi, et al. Optical Multi-Channel Detection and Analysis on Solar Ultra-Violet Irradiance Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(05): 846-849.
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URL: |
https://www.gpxygpfx.com/EN/Y2007/V27/I05/846 |
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