Subj : MODIS Pic of the Day 19 April 2022
To   : All
From : Dan Richter
Date : Tue Apr 19 2022 12:00:20

April 19, 2022 - Fires in Guinea and Sierra Leone

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   Many dozens of fires speckled the Sahel of Guinea (north) and Sierra
   Leone in mid-April 2022, creating a veil of smoke that wafted over both
   the land and North Atlantic Ocean. The Moderate Resolution Imaging
   Spectroradiometer (MODIS) on board NASA’s Aqua satellite acquired a
   true-color image of the region on April 17.

   Each red “hot spot” marks an area where the thermal bands on the MODIS
   instrument detected high temperatures. When combined with typical
   smoke—as seen in this image—such hot spots are diagnostic for actively
   burning fire. While it is not possible to know the cause of a fire
   simply from looking at a satellite image, the widespread nature of the
   fires and the time of year are strongly suggestive of agricultural
   fires. Farmers often use fire to return nutrients to the soil and to
   clear the ground of unwanted plants. While fire helps enhance cropland
   and renews grasses for pasture, the fires also produce smoke that
   degrades air quality.

   Image Facts
   Satellite:  Aqua
   Date Acquired: 4/17/2022
   Resolutions:  1km (81.2 KB),  500m (259.9 KB),  250m (806.5
   KB)
   Bands Used: 1,4,3
   Image Credit: MODIS Land Rapid Response Team, NASA GSFC



https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-04-19
 
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