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VIIRS

 

NDVI (Normalized Difference Vegetation Index; Tucker, 1979)

 

NDVI is estimated as:

where ρ₁ and ρ₂ correspond to atmospherically corrected reflectances for red and near-infrared VIIRS bands 5 and 7 respectively. In our case, NDVI is estimated for daylight acquisitions only.

 

 

Reference

 

Tucker, C. J., 1979. Red and Photographic Infrared Linear Combinations for Monitoring Vegetation, Remote Sensing of Environment, 8 (2), 127-150.