Enhanced vegetation index

[1] Starting 2000, and after the launch of the two MODIS sensors on Terra (satellite) and Aqua (satellite) by NASA, EVI was adopted as a standard product by NASA and became extremely popular with users due to its ability to eliminate background and atmosphere noises, as well as its non saturation, a typical NDVI problem.

[4] Two reasons drive the search for a two-band EVI: Additionally, the original motivation for the inclusion of the blue band (NDVI uses only NIR and red) in the 1990s was to mitigate atmospheric aerosol interference.

[5] However, since that time, sensor level atmospheric adjustment has improved substantially minimizing the marginal impact of blue band on accuracy.

Using the MODIS EVI product, Huete et al. showed that the Amazon forest exhibits a distinct increase in growth during the dry season.

This phenomenon has implications for our understanding of the carbon cycle and sinks in the region, though it is unclear whether this is a long-standing pattern or an emergent shift associated with climate change.