MSGID: 1:317/3 62e2ced3   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   July 28, 2022 - Clouds around Isla Guadalupe   
      
      Clouds around Isla Guadalupe   
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      Isla Guadalupe sits in the Pacific Ocean off about 150 (240 km) off the   
      coast of Baja California, Mexico. Only 22 miles (35.4 km) long and 6   
      miles (9.6 km) wide, the broad northern face of the island juts 4,257   
      feet (1,297.5 km) above sea level.   
      
      Winds are frequent in this section of the Pacific Ocean, as are the   
      massive banks of marine stratocumulus cloud which frequently form off   
      the western coast of continents. When wind strikes an immobile   
      object—such as the face of Isla Guadalupe—the flow of the wind is   
      disrupted, causing it to flow around the object and swirls of turbulent   
      air develop on the lee side. In cloud-free skies, the flow of air is   
      invisible. Cloudy skies, however, create a perfect canvas to bring the   
      motion into view.   
      
      On July 26, 2022, the Moderate Resolution Imaging Spectroradiometer   
      (MODIS) on board NASA’s Terra satellite captured a stunning true-color   
      image showing the atmospheric disruption caused by a small, tall island   
      painted into the clouds. Clouds can be seen pressing against the broad,   
      tall northern face of the island. As air is violently pushed eastward   
      and westward around the volcanic obstruction, clouds are also pushed   
      away from the island. As the air passes Isla Guadalupe, the spinning   
      air creates glorious patterns in the clouds.   
      
      These repetitive and predictable patterns are known as Von Kármán   
      vortices. They are named after Theodore von Kármán—an accomplished   
      mathematician, aerospace engineer, and one of NASA Jet Propulsion   
      Laboratory’s founders—who was the first to mathematically describe the   
      formation of these vortices behind immobile objects. Von Kármán   
      vortices will only form under certain conditions of air speed,   
      atmospheric stability, and obstacle size. Conditions around Isla   
      Guadalupe are often ideal for production of these gorgeous swirls,   
      especially in June, July, and August, when they occur almost every day.   
      
      Image Facts   
      Satellite:  Terra   
      Date Acquired: 7/26/2022   
      Resolutions:  1km (152.6 KB),  500m (448.5 KB),  250m (320.5   
      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=2022-07-28   
       
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