Effect of Atmospheric Haziness to the Error of Normalized Difference Vegetation Index for Satellite Images

Chien-Hui Liu

NDVI, Atmospheric Haziness, Aerosol Optical Depth, Surface Reflectance, Remote Sensing.

In this study, atmospheric haziness effect to the error of NDVI using top-of-atmosphere reflectance, is analyzed. SPOT satellite images are used. Ground measured AOD data are implemented to characterize the atmospheric haziness. The results show that when aerosol optical depth at 550 nm increases to 0.8, the mean error of NDVI image can up to 0.25 in NDVI units. Corresponding relative error of NDVI can up to 50%. The relationships between error of NDVI and relative error of NDVI to ground measured AOD are also studied to further emphasize the importance of AC in NDVI determination.

https://doi.org/10.31871/IJNTR.8.6.20