| 城市烟雾层大气光学特性的研究 |
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| 引用本文： | 田文寿,张镭.城市烟雾层大气光学特性的研究[J].兰州大学学报(自然科学版),1999,35(1):225-230. |
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| 作者姓名： | 田文寿 张镭 |
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| 作者单位： | 兰州大学大气科学系 |
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| 摘 要： | 利用一次外场试验中两个不同高度上的太阳辐射观测资料，计算了城市烟雾层大气平均光学特性参数。经对比分析，与Ｍｉｅ理论计算的结构基本一致。计算所得兰州冬季城市烟雾层大气的平均吸收系数为０．１５８／ｋｍ，散射系数为０．４１０／ｋｍ，后向散射系数为０．０３５／ｋｍ。烟雾层内气溶胶和平均吸收系数为０．１３３／ｋｍ，散射系数为０．４０４／ｋｍ。，后向散射系数为０．０２８／ｋｍ，水汽吸收和瑞利散射对烟雾层内太阳
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| 关 键 词： | 烟雾层 气溶胶 光学特性参数 城市 太阳辐射 |
Study on Optical Properties of Urban Smog Layer |
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| Tian Wenshou,Zhang Lei,Chen Changhe.Study on Optical Properties of Urban Smog Layer[J].Journal of Lanzhou University(Natural Science),1999,35(1):225-230. |
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| Authors: | Tian Wenshou Zhang Lei Chen Changhe |
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| Abstract: | The average optical parameters of the urban smog layer over Lanzhou are calculated by using the solar observation data on the two different levels. Compared with the values calculated by the Mie scattering method, the results are almost the same. The calculated average absorption coefficient, scattering coefficient and backscattering coefficient of the urban smog layer are respectively 0.158/km, 0.410/km, and 0.035/km, and the results for the aerosol in the smog layer are 0.133/km, 0.404/km and 0.028/km. The contribution of water vapor absorption and Rayleigh scattering to attenuation is relatively small. |
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| Keywords: | smog layer aerosol optical properties |
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