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See Where Wildfires Are Burning in California

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Hotspots are based on infrared imaging and thermal detection from two satellites: NASA’s Visible Infrared Imaging Radiometer Suite (VIIRS-I), which provides data from sensors aboard the joint NASA/NOAA Suomi National Polar-orbiting Partnership satellite, and also the Moderate Resolution Imaging Spectroradiometer (MODIS), which provides data from sensors aboard the MODIS satellites Terra and Aqua. Each hotspot represents an area where satellites have detected heat, but do not necessarily show the actual size of a fire. A very hot fire burning across a relatively small area could produce more hotspots than a larger, cooler blaze.


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