The Normalized Difference Vegetation Index (NDVI) is an indicator of the greenness of vegetation and thus closely linked to vegetation density and productivity (Tucker & Sellers 1986). The NDVI is ...
To test this idea, they used a normalized difference vegetation index (NDVI) as a measure of precipitation and corresponding pastoral grazing opportunity, with NDVI values obtained from Landsat 5 ...
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Megadroughts Have Grown in Size and ScopeA new study maps and ranks the largest, longest-lasting, and most severe multiyear droughts from 1980 to 2018. Megadroughts ...
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