红外与毫米波学报2025，Vol.44Issue(2)：226-240,15.DOI:10.11972/j.issn.1001-9014.2025.02.011
中红外海面太阳耀光方向辐射模拟与评估
Simulation and evaluation of mid-infrared sea surface sun glint directional radiation
摘要
Abstract
The energy received in the mid-infrared(MIR)band at the sensor's aperture includes both reflected solar en-ergy and the emitted energy from Earth's surface.Typically,the reflected solar energy in this band is weak.However,under certain conditions,such as in sun glint regions on the sea surface,the reflected solar energy detected by the MIR channel can be substantial.Currently,the application of sun glints physical models in the MIR band is not yet clear.This study investigates the accuracy of applying different visible light and shortwave infrared sun glint models in the MIR band to evaluate their applicability.The paper selects three models,namely Breon-Henriot,Ebuchi-Kizu,and Wu,to first evaluate the sensitivity of each sun glint model.Subsequently,four selected MODIS sun glint images were used as data sources,and ERA5 reanalysis data matched with satellite data was used to calculate atmospheric parame-ters.The solar radiation intensity reflected by the sea surface was computed using the three models.The accuracy of each model was then further validated with an MIR radiation transfer model.The results show that the Breon-Henriot model generally performs best in terms of correlation coefficient and root-mean-square error compared to MODIS mea-surements.These findings not only extend the application range of sun glint models in the MIR band but also enhance the MIR forward modeling system,providing new theoretical support for MIR radiation transfer and improving the ef-fectiveness and accuracy of MIR remote sensing products in climate change monitoring and sea surface temperature dy-namic analysis.关键词
太阳耀光/中红外/海洋表面Key words
sun glint/mid-infrared/ocean surface分类
计算机与自动化引用本文复制引用
张振午,王宁,马灵玲,张贝贝,赵永光,李婉..中红外海面太阳耀光方向辐射模拟与评估[J].红外与毫米波学报,2025,44(2):226-240,15.基金项目
国家重点研发计划(2023YFB3907705)Supported by the National Key Research and Development Program of China(2023YFB3907705) （2023YFB3907705）
