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   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   June 27, 2023 - Bloom in the Black Sea   
      
      Bloom   
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      The dark water of the Black Sea was tinted with swirls of light blue in   
      late June 2023. The Moderate Resolution Imaging Spectroradiometer   
      (MODIS) on board NASA’s Aqua satellite acquired a true-color image of   
      the colorful scene on June 24.   
      
      The bright colors are the result of a widespread bloom of   
      phytoplankton—microscopic plant-like organisms that float near the   
      surface of the water year-round in relatively small numbers. When water   
      temperature, sunlight length, and nutrient load are favorable,   
      phytoplankton can reproduce explosively and create large floating   
      colonies that can be seen from space.   
      
      The water of the Black Sea is enriched by nutrients carried in by the   
      Danube, Dnieper, Dniester, Don and other rivers, creating fertile   
      territory for the growth of phytoplankton. These microscopic algae,   
      bacteria, and protists use chlorophyll to make their own food from   
      sunlight and dissolved nutrients and are considered the “primary   
      producers” of the seas and oceans. More than 150 different types of   
      phytoplankton have been observed in the Black Sea over the years, and   
      they support a rich bounty of fish and other marine organisms found   
      here. On the other hand, an over abundance of these organisms can   
      deplete oxygen dissolved in the water and cause stress to the other   
      marine life that lives in the Black Sea.   
      
      Image Facts   
      Satellite:  Aqua   
      Date Acquired: 6/24/2023   
      Resolutions:  1km (1008.6 KB),  500m (2.8 MB),  250m (7.8 MB)   
      Bands Used: 1,4,3   
      Image Credit: MODIS Land Rapid Response Team, NASA GSFC   
      
      
      
   https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2023-06-27   
       
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