Evaluation Of A Physically-Based Passive Microwave Land Surface Temperature Retrieval Algorithm Using Modis Data
文献类型: 外文期刊
作者: Huang, C; Duan, SB; Jiang, XG; Li, ZL; Wu, H; Han, XJ; Leng, P; Gao, MF; Jiang, YZ; Zhang, XP; Gao, CX
作者机构:
关键词: Land Surface Temperature; Passive Microwave; Amsr2
期刊名称: 2019 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2019)
ISSN: 2153-6996
年卷期: 2019 年
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摘要: Passive microwave data are much less affected by clouds than TIR data for the retrieval of land surface temperature (LST), providing its unique advantages in global mapping of LST. In this study, a physically-based algorithm for LST retrieval was applied to AMSR2 global brightness temperature data. The performances of this algorithm applied on different land cover types were further evaluated against nighttime MYD11A1 thermal infrared LST products. The results showed that (i) the overall accuracy of the algorithm is about 5.42 K by root mean square error (RMSE) and 2.99 K by bias against MODIS LST during nighttime; (ii) the algorithm overestimates the LST over all land types. The overestimation is most evident over barren/sparsely vegetated surfaces. The algorithm shows that the algorithm has a robust performance comparing with MODIS LST and could be applied to estimate LST effectively.
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