MSGID: 1:317/3 62f93843   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
    EPOD - a service of USRA   
      
   The Earth Science Picture of the Day (EPOD) highlights the diverse processes   
   and phenomena which shape our planet and our lives. EPOD will collect and   
   archive photos, imagery, graphics, and artwork with short explanatory   
   captions and links exemplifying features within the Earth system. The   
   community is invited to contribute digital imagery, short captions and   
   relevant links.   
      
      
    Distortion of the Setting Moon and Lower Mock Mirage   
      
      August 12, 2022   
      
      
       Lorenzo_IMG_20220517_095942   
      
      Photographer:  Lorenzo Busilacchi   
      
      Author:  Lorenzo Busilacchi   
      
      As shown above,  the atmosphere acts to flatten the apparent lunar   
      disk when it’s on or close to the horizon. This photo was captured at   
      Porto Ottiolu, Sardinia. Light emanating from the bottom of the Moon   
      passes through  more of our atmosphere when it’s closer to the   
      horizon than does light from the upper reaches of the Sun. The Sun's   
      bottom is thus  refracted upwards a greater amount than at the top -   
      this holds for all celestial objects as they approach the horizon. Note   
      also the lower  mock mirage, caused by a sharp  temperature   
      inversion, which further exaggerates the shape of the lunar disk. Photo   
      taken on May 15, 2022.   
      
      
      Porto Ottiolu, Budoni, Sardinia, Italy Coordinates: 40.7374, 9.7079   
      
      
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      Observed from the Ground and from a Tower  Atacama Desert and   
      Volcanic Twilight  Triple Halo Event - 22° Circular Halo, 9° Halo,   
      and Circumscribed Halo  Fogbow over Sebago Lake, Maine  Cloud   
      Corona Over the SIerra Nevada   
       More...   
      
   Atmospheric Effects Links   
      
        *  Atmospheric Optics   
        *  Optic Picture of Day: Gruppo Astrofili Galileo Galilei   
        *  Color and Light in Nature   
        *  The Colors of Twillight and Sunset   
        *  Refraction Index   
        *  Image Gallery: Atmospheric Effects   
        *  What is a Rainbow?   
      
   -   
      Earth Science Picture of the Day is a service of the  Universities   
      Space Research Association.   
      
   https://epod.usra.edu   
       
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