Prevention Web: Satellite maps can help nations make critical food production decisions amid coronavirus

Take a look at the satellite map below. That vast swathe of orange and red across northwestern India and Pakistan depicts crops that have ripened in the last couple of weeks.

The satellite map at the top of this article (Figure 1) was created by scientists using GEE at the International Water Management Institute (IWMI) and CGIAR Research Program of Water, Land and Ecosystems (WLE). It is based on an ‘Enhanced Vegetation Index’ (EVI), which shows what stage plants are at in their growth cycle. The Index was derived from Nasa’s MODIS Terra daily satellite data. Historical satellite images of crops at known stages of growth were used to help ensure accuracy of the forecast.


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