Impact of different BRDF models on the inversion of desert surface emissivities

Lu Han; Shi-zhi Yang; Sheng-cheng Cui; Wen-qiang Lu

doi:10.1117/12.2315472

20 February 2018 Impact of different BRDF models on the inversion of desert surface emissivities

Lu Han, Shi-zhi Yang, Sheng-cheng Cui, Wen-qiang Lu

Proceedings Volume 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application; 106973T (2018) https://doi.org/10.1117/12.2315472
Event: Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 2017, Nanjing, China

Abstract

Based on the Temperature Independent Spectral Index (TISI) method, the inversion of land surface emissivity was performed with MODIS infrared data over the Taklimakan Desert. In the process of land surface emissivity retrieval, the RossThick-LiSparseR BRDF model and the modified Minneart’s BRDF model were used to calculate the surface albedo. The retrieved emissivities were compared with MODIS emissivity products. The results show that the inversion error is small when the RossThick-LiSparseR model is been used, the average errors of the channels 31 and 32 are 0.0084 and 0.0023, respectively, and the emissivity decreases with the increase of the observation angle. By using the modified Minneart’s BRDF model, the average error of channels 31、32 are 0.0364,0.0259 respectively.

Citation Download Citation

Lu Han, Shi-zhi Yang, Sheng-cheng Cui, and Wen-qiang Lu "Impact of different BRDF models on the inversion of desert surface emissivities", Proc. SPIE 10697, Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 106973T (20 February 2018); https://doi.org/10.1117/12.2315472

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