| 利用太阳辐射测量合肥地区气溶胶光学厚度 |
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| 引用本文： | 马光明,魏庆农,汪世美. 利用太阳辐射测量合肥地区气溶胶光学厚度[J]. 大气与环境光学学报, 2006, 1(1): 41-46 |
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| 作者姓名： | 马光明 魏庆农 汪世美 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所,环境光学与技术重点实验室,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,环境光学与技术重点实验室,安徽,合肥,230031;中国科学院安徽光学精密机械研究所,环境光学与技术重点实验室,安徽,合肥,230031 |
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| 摘 要： | 2005年11月至2006年1月，选择晴朗无云的天气，利用地物光谱仪和自行设计的基于积分球的光学接收装置，测量了合肥地区的太阳直射光谱。利用Langley方法对测量的数据进行处理，反演了从350nm到2500nm的大气气溶胶光学厚度，550nm处的光学厚度平均值是0．39156，光学厚度随波长增加而减小；对计算得出的光学厚度值作了Junge分布拟合，得到浑浊度系数k的平均值是0．18895，波长指数v的平均值是3．26504，结果表明合肥地区气溶胶中小粒子占主导地位。
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| 关 键 词： | 遥感 气溶胶 光学厚度 浑浊度系数 太阳直射辐射 |
| 收稿时间： | 2006-02-21 |
| 修稿时间： | 2006-04-05 |
Measurements of Aerosol Optical Depth from Solar Radiation over Hefei Region |
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| MA Guang-ming,WEI Qing-nong,WANG Shi-mei. Measurements of Aerosol Optical Depth from Solar Radiation over Hefei Region[J]. Journal of Atmospheric and Environmental Optics, 2006, 1(1): 41-46 |
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| Authors: | MA Guang-ming WEI Qing-nong WANG Shi-mei |
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| Affiliation: | Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences, Hefei 230031, China |
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| Abstract: | From November 2005 to January 2006 when air is clear, a FieldSpec(r) Pro spectroradiometer is used in conjunction with a custom-designed telescope based on integrating sphere to make spectrally continuous measurements of directly transmitted solar spectral irradiance in Hefei. With Langley method, the data is anlyzed to get aerosol optical depth from 350nm to 2500nm. The average optical depth is 0.39156 at 550nm,aerosol optical depth decreases with wavelength increasing. The average Angstrom exponent κ(=0.18895) and ν(=3.26504) are obtained by fitting the optical depth on Junge distribute. The result shows that the small particles are primary in Hefei. |
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| Keywords: | remote sensing aerosol optical depth Angstrom exponent direct solar radiation |
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