利用MODIS资料模拟计算水云大气红外辐射特性

曹亚楠; 魏合理; 徐青山; 戴聪明; 陈秀红

doi:doi:10.3788/gzxb20144306.0601001

光子学报, 2014, 43 (6): 0601001, 网络出版: 2014-08-18

利用MODIS资料模拟计算水云大气红外辐射特性

Simulation of Atmospheric Radiative Properties at IR Bands under Water Clouds Based on MODIS Data

论文大纲

曹亚楠 ^1,2,*魏合理 ¹徐青山 ¹戴聪明 ¹陈秀红 ¹

作者单位

¹ 中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室，合肥 230031

² 中国科学院大学，北京 100039

摘要

利用MODIS二级云产品和大气产品资料，采用通用大气辐射传输软件模拟计算了水云存在的情况下8.55 μm、11.03 μm和12.02 μm波段水云大气顶亮温，并对三波段的MODIS云顶观测亮温和模拟计算的亮温进行了对比分析.结果表明：利用MODIS卫星观测云参量、大气参量和空间几何参量，结合通用大气辐射传输软件模拟计算的亮温和MODIS云顶亮温分布基本一致，亮温差较小，主要分布在－10 K~10 K附近.模拟计算的三个通道亮温差BTD(8.55~11.03 μm)和BTD(11.03~12.02 μm)的变化符合水云的情况.

Abstract

The combined atmospheric radiative transfer model based on MODIS level2 cloud products and atmospheric products was used to simulate brightness temperature at the top of atmosphere with water clouds at 8.55 μm, 11.03 μm and 12.02 μm bands. The brightness temperatures between model and MODIS observation at 8.55 μm,11.03 μm and 12.02 μm bands were compared and analyzed . Results show that brightness temperature simulated by Combined Atmospheric Radiative Transfer model based on satellite cloud parameters, atmosphere parameters and space geometric parameters is basically consistent with MODIS observation. The brightness temperature difference between them is quite small. And brightness temperature difference between model and MODIS is mostly at the range of －10 K~10 K. Varieties of brightness temperature BTD(8.55~11.03 μm) and BTD(11.03~12.02 μm) of model were accordant with conditions under water clouds.

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曹亚楠, 魏合理, 徐青山, 戴聪明, 陈秀红. 利用MODIS资料模拟计算水云大气红外辐射特性[J]. 光子学报, 2014, 43(6): 0601001. CAO Yanan, WEI Heli, XU Qingshan, DAI Congming, CHEN Xiuhong. Simulation of Atmospheric Radiative Properties at IR Bands under Water Clouds Based on MODIS Data[J]. ACTA PHOTONICA SINICA, 2014, 43(6): 0601001.

利用MODIS资料模拟计算水云大气红外辐射特性

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