Explore using units for calculations with Normalized Difference Vegetation Index (NDVI). NDVI is a ratio of different light wavelength reflectance which can be used to map the density of green vegetation.
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Students observe monthly images of changing vegetation patterns, looking for seasonal changes occurring throughout 2017.
Analyze these satellite images comparing Ocean Chlorophyll Concentrations with Sea Surface Temperatures beginning with the North Atlantic region, then expanding global patterns of these phenomena. Credit: NASA Earth Observatory