Global satellite imagery which can be used to calculate key indices of vegetative cover—such as NDVI—as well as other land cover metrics. Sentinel-2 has a 10-day repeat cycle and started collecting data in 2015.

How to access: 

Downloadable as raster layers from Earth Explorer. May require additional processing. If you have limited experience with GIS, remote sensing, or coding, or are interested in visualizing and analyzing remote sensing datasets without downloading them, see EarthMap.