合肥大气下行长波辐射估算模型研究与改进

大气与环境光学学报 ›› 2022, Vol. 17 ›› Issue (4): 383-392.

• 大气光学 • 下一篇

合肥大气下行长波辐射估算模型研究与改进

张允祥1, 李新1∗, 韦玮1, 黄冬1;2

1 中国科学院合肥物质科学研究院安徽光学精密机械研究所, 中国科学院通用光学定标与表征技术重点实验室, 安徽合肥 230031; 2 中国科学技术大学, 安徽合肥 230026

收稿日期:2020-12-08 修回日期:2022-06-27 出版日期:2022-07-28 发布日期:2022-07-28
通讯作者: E-mail: xli@aiofm.ac.cn E-mail:xli@aiofm.ac.cn
作者简介:张允祥 (1993 - ), 安徽阜阳人, 博士, 助理研究员, 主要从事卫星遥感器热红外通道辐射定标技术与光学精密仪器研究。 E-mail: zhangyx@aiofm.ac.cn
基金资助:
Supported by National Key R&D Program of China (国家重点研发计划, 2018YFB0504604)

Research and improvement of atmospheric downward longwave radiation estimation model for Hefei

ZHANG Yunxiang1, LI Xin1∗, WEI Wei1, HUANG Dong

1 Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China

Received:2020-12-08 Revised:2022-06-27 Published:2022-07-28 Online:2022-07-28

摘要/Abstract

摘要： 大气下行辐射是地表辐射和能量平衡中的一个关键参数, 在反演地表温度和发射率、开展气候变化研究中起着关键作用。基于现有的大气下行辐射测量方法的分析比较, 开展了合肥大气下行长波辐射的研究。利用 MODTRAN 辐射传输模型模拟计算了合肥大气下行辐射通量, 并以该方法获取的大气下行辐射通量为基准, 对广泛应用的个晴天经验模型进行性能评价, 验证了 Idso 模型和 Ångstrom ¨ 模型对于合肥大气条件的适用性。进而利用 MODTRAN 辐射传输模型模拟数据对 Idso 模型中的参数进行修正, 提高了该模型的模拟精度。该研究为方便快捷准确地获取合肥大气下行辐射通量提供了可靠方法。

关键词: 大气下行长波辐射, 经验模型, 参数修正, 大气辐射传输模型

Abstract: Atmospheric downward radiation is a key parameter in surface radiation and energy balance. It plays a key role in retrieving surface temperature and emissivity and in the study of climate change. Based on the analysis and comparison of the existing atmospheric downward radiation measurement methods, the research of Hefei atmospheric downward longwave radiation is carried out. Hefei downward atmospheric radiant flux is simulated and calculated by using MODTRAN radiation transmission model, and then taking the atmospheric downward radiant flux obtained by this method as benchmark, the performance of the widely used sunny day empirical model is evaluated, and the applicability of Idso model and Ångstrom model to Hefei atmospheric conditions is verified. In ¨ addition, the parameters in the Idso model are modified by using MODTRAN radiation transmission model simulation data to improve the simulation accuracy of the model. This study provides a reliable method for conveniently, quickly and accurately obtaining Hefei atmospheric downward radiant flux.

Key words: atmospheric downward longwave radiation, empirical model, parameter correction, atmospheric radiation transmission model

中图分类号:

O436

张允祥, 李新∗, 韦玮, 黄冬, . 合肥大气下行长波辐射估算模型研究与改进[J]. 大气与环境光学学报, 2022, 17(4): 383-392.

ZHANG Yunxiang, LI Xin∗, WEI Wei, HUANG Dong. Research and improvement of atmospheric downward longwave radiation estimation model for Hefei[J]. Journal of Atmospheric and Environmental Optics, 2022, 17(4): 383-392.

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合肥大气下行长波辐射估算模型研究与改进

Research and improvement of atmospheric downward longwave radiation estimation model for Hefei

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