MSGID: 1:317/3 6432fd4a   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   April 9, 2023 - Contrails Crisscross the Iberian Peninsula   
      
      contrails   
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      Long streaks of cloud crisscrossed the skies over the Iberian Peninsula   
      on April 7, 2023. The Moderate Resolution Imaging Spectroradiometer   
      (MODIS) on board NASA’s Terra satellite acquired a true-color image of   
      the complex pattern on that same day.   
      
      The streaks are a type of cirrus cloud known as a “contrail”. Cirrus   
      clouds typically form in the sky when humidity is high, but contrails   
      form in the wake of passing aircraft due to particles and water vapor   
      contained in their exhaust. The temperature and humidity of the air   
      affects how long contrails last. When air is dry, contrails last just   
      seconds or minutes. But when the air is humid, contrails can be   
      long-lived. Young, freshly formed contrails appear like neat line, with   
      sharp and distinct sides. As contrails age, they spread outward until   
      they become difficult to distinguish from naturally occurring cirrus   
      clouds.   
      
      The complex set of contrails captured in this image are a mix of both   
      young and older contrails that have formed in the wake of many   
      different aircraft. Near the right side of the image, a few thin lines   
      stretch from the northeast to the southwest, marking the youngest   
      contrails. The majority, however, are older and appear as thick gray   
      lines over the North Atlantic and passing over the coast of Spain. A   
      group of fuzzy cloud-like areas located inland are likely older   
      contrails, while broad swaths of white over the North Atlantic are   
      banks of clouds.   
      
      Image Facts   
      Satellite:  Terra   
      Date Acquired: 4/7/2023   
      Resolutions:  1km (274.3 KB),  500m (670.1 KB),  250m (455.6   
      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=2023-04-09   
       
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