Global Greenness based on the Normalized Difference Vegetation Index
Dates
Original Data Basin Creation Date
2010-07-08 10:35:37
Original Data Basin Modified Date
2010-07-08 10:38:24
Summary
One method of mapping the difference in vegetation is a measurement known as the Normalized Difference Vegetation Index (NDVI). This image shows NDVI from Nov. 1, 2007, to Dec. 1, 2007, during autumn in the Northern Hemisphere. This monthly average is based on observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite. The greenness values on this global map range from -0.1 to 0.9, but have no actual unit. Instead, higher values (dark greens) show land areas with plenty of leafy green vegetation, such as the Amazon Rainforest. Lower values (beige to white) show areas with little or no vegetation, including sand seas and Arctic areas. Areas with moderate amounts of vegetation are pale green. [...]
Summary
One method of mapping the difference in vegetation is a measurement known as the Normalized Difference Vegetation Index (NDVI). This image shows NDVI from Nov. 1, 2007, to Dec. 1, 2007, during autumn in the Northern Hemisphere. This monthly average is based on observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite.
The greenness values on this global map range from -0.1 to 0.9, but have no actual unit. Instead, higher values (dark greens) show land areas with plenty of leafy green vegetation, such as the Amazon Rainforest. Lower values (beige to white) show areas with little or no vegetation, including sand seas and Arctic areas. Areas with moderate amounts of vegetation are pale green. Land areas with no data appear gray, and water appears blue.
