MSGID: 1:317/3 646e50b0   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   May 24, 2023 - Mountains in the Clouds   
      
      Clouds   
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      Indonesia is a highly volcanic archipelago stretching between the   
      Pacific Ocean and the Indian Ocean in Southeast Asia. Java, an island   
      in Indonesia’s Greater Sunda Islands, covers about 48,036 square miles   
      (124,413 sq km) and is said to be the most heavily populated island in   
      the world. Aside from people, Java is also densely populated by   
      volcanoes, packing 112 volcanoes in its roughly North Carolina-sized   
      footprint, 35 of which are active. Many are also quite tall, with Mount   
      Semeru, at 12,060 feet (3,676 meters), taking the title of highest.   
      
      On May 22, 2023, the Moderate Resolution Imaging Spectroradiometer   
      (MODIS) on board NASA’s Terra satellite acquired a true-color image of   
      a portion of Java. Tall volcanic peaks rise high off a background of   
      gorgeous green plains, each surrounded by cloud. This is especially   
      noticeable along the mountain range that runs east-west along Java’s   
      spine. Mount Semeru sports a clearly-defined semi-circle of cloud   
      around its peak and is the second volcano from the right edge of the   
      image.   
      
      The clouds are the result of a meteorological phenomenon called “valley   
      wind.” During the day, the Sun warms the air in the valleys and by   
      afternoon causes it to rise up the slopes of the mountains. As the   
      warm, moist air rises, it cools and condenses into clouds over the   
      volcanoes, or around their highest peaks.   
      
      Sea breezes could have contributed to the cloud growth, too. As the   
      land warms during the day, the temperature difference between the land   
      and sea surfaces causes winds to blow onshore. Moist sea breezes   
      combine with valley winds and move up toward the mountaintops, adding   
      to the ease of cloud formation.   
      
      Image Facts   
      Satellite:  Terra   
      Date Acquired: 5/22/2023   
      Resolutions:  1km (266.3 KB),  500m (780.4 KB),  250m (2 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=2023-05-24   
       
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