Retrieving Aerosol Characteristics from FORMOSAT-2 RSI Images

Chien-Hui Liu

Aerosol Optical Depth, Aerosol Model, FORMOSAT-2, Dark Target.

Aerosol characteristics vary with locations due to its composition. Dependent on the abundance, dark target also varies with locations. In this study, the optimal aerosol model and assumed dark target surface reflectance in AOD retrieval from FORMOSAT-2 RSI data are determined for Tainan test site, Taiwan. AERONET data are used to assess the accuracy of retrieved AOD. The results show that optimal aerosol model is determined to be desert aerosol model, which is different from maritime aerosol in Taoyuan, Taiwan. Assumed dark target reflectance at red band is determined to be 0.005, which is smaller as compared to 0.01 in Taoyuan. RMSEs in retrieved AOD in both cases are 0.11 (Tainan) and 012 (Taoyuan), respectively.

https://doi.org/10.31871/IJNTR.8.6.11