MSGID: 1:317/3 636a994b   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   November 8, 2022 - Haze over China   
      
      Aerosols over China   
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      On November 7, 2022, the Moderate Resolution Imaging Spectroradiometer   
      (MODIS) on board NASA’s Aqua satellite acquired a true-color image of a   
      thick haze hovering over eastern China. Inland, the gray pall sits   
      beneath the cloud layer and is so thick that the land beneath is   
      obscured from view. The aerosols thin in the east as they approach the   
      coastline to stretch over the Yellow Sea. Although this image shows a   
      massive amount of haze, it is only a fraction of the entire expanse,   
      which sweeps more than 2,600 kilometers (1,616 miles) from Chengdu,   
      China to cross over the Korean Peninsula to reach the Sea of Japan   
      (East Sea).   
      
      The haze likely contains airborne dust, smoke, pollution from industry   
      and automobiles and other aerosols. Airborne particles are often   
      measured in microns (also micrometers), or one-millionth of a meter.   
      Particles with diameters of 2.5 microns or smaller—about one-thirtieth   
      the width of a human hair—are believed to pose the greatest health   
      risks because they can lodge deeply in the lungs, according to the U.S.   
      Environmental Protection Agency.   
      
      On November 7, the World Air Quality Index Project website showed   
      elevated levels of these fine particles, known as PM2.5, to be high   
      over much of eastern China. For example, the Linyi Economic Development   
      Zone registered PM2.5 of 278, which is listed as Very Unhealthy. This   
      Zone is located 50 kilometers north of Jinan, the capital city of   
      Shandong Province, near the eastern coast, and is not within the area   
      of thickest haze.   
      
      Image Facts   
      Satellite:  Aqua   
      Date Acquired: 11/7/2022   
      Resolutions:  1km (1.4 MB),  500m (4.4 MB),  250m (13.3 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=2022-11-08   
       
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