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GIMMS Global Agricultural Monitoring

The Global Agricultural Monitoring (GLAM) provides near real-time and science quality 8-day Normalized Difference Vegetation Index (NDVI) data from NASA’s Terra and Aqua satellites, MODIS sensor. Users select different administrative areas and crop masks to plot NDVI curves.

The GLAM system allows you to view satellite images showing the health and greenness of vegetation across the globe. It was developed by NASA and the U.S. Department of Agriculture to help monitor crops and food security around the world.

GLAM uses data from instruments on NASA's Terra, Aqua, and Suomi NPP satellites called MODIS and VIIRS. These instruments measure the "greenness" of vegetation by detecting near-infrared light reflected by plant leaves. This information is used to create Normalized Difference Vegetation Index (NDVI) images showing where vegetation is lush and green versus sparse or stressed.

With the user-friendly GLAM interface, you can view global NDVI images updated every 8 days. You can track changes in vegetation over time in specific areas. This helps give early warning signs of droughts or other problems affecting agriculture. Whether you are a farmer checking your own fields, an agricultural ministry tracking nationwide food production, or an international aid agency monitoring global food security, GLAM provides a valuable tool.




Researcher, Extension, Producer, Land Manager