| 地球大气透过率及辐射率计算 |
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| 引用本文： | 吴晓.地球大气透过率及辐射率计算[J].应用气象学报,1998,9(1):124-128. |
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| 作者姓名： | 吴晓 |
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| 作者单位： | 1.国家卫星气象中心 |
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| 摘 要： | 文章介绍了一种比较简单实用的地球大气的光谱透过率和到达大气层顶的红外辐射率的计算模型，光谱波长从4 μm到∞ μm，吸收气体H2O、CO2、O3的吸收计算采用Elsasser带模式及其经验参数，H2O的连续吸收公式是美国LOWTRAN-6计算程序的水汽连续吸收经验公式。透过率的计算结果与LOWTRAN计算结果相一致。以这种透过率简化模型为基础，建立了辐射传递正演计算模型，开发了相应软件，并用于卫星遥感射出长波辐射的资料处理中，取得了良好结果。
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| 关 键 词： | 大气透过率 辐射率 射出长波辐射 |
Calculation of Earth Atmospheric Transmissivity and Radiance |
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| Institution: | (National Satellite Meteorological Center, Beijing 100081) |
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| Abstract: | A simplified calculation method of the earth atmospheric spectrum transmissivity and the IR radiance arrived at the top of atmosphere is introduced. Spectral range is from 4μm to ∞μm. The Elsasser band model and empirical parameters are used to calculate the absorption of H2O, and O3. The continuous absorption of H2O is calculated by LOWTRAN-6 empirical equation. The calculated results of transmissivity are coincided with those of LOWTRAN. Based on the simplified transmissivity model, a radiative transfer regression model is set up, and relevant software is developed. It is applied in data processing of satellite outgoing longwave radiation, and good results are obtained. |
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| Keywords: | : Atmospheric transmissivity Radiance Outgoing longwave radiation |
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