地球大气透过率及辐射率计算  

CALCULATION OF EARTH ATMOSPHERIC TRANSMISSIVITY AND RADIANCE

作　　者：吴晓[1] 

机构地区：[1]国家卫星气象中心

出　　处：《应用气象学报》1998年第1期124-128,共5页Journal of Applied Meteorological Science

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４μｍ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．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 4 μm to ∞ μm. The Elsasser band model and empirical parameters are used to calculate the absorption of H2O, CO2 and O3. The continuous absorption of H2O 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.

关 键 词：大气透过率 辐射率 射出长波辐射 气溶胶 

分 类 号：P422.61[天文地球—大气科学及气象学] X513[环境科学与工程—环境工程]