MSGID: 1:317/3 63a1f870   
   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.   
      
      
    Lunar Green Flash Sequence   
      
      December 20, 2022   
      
      
       Lorenzo_1668252846638_raggio verde (002)   
      
      Photographer:  Lorenzo Busilacchi   
      
      Summary Authors:  Lorenzo Busilacchi;  Jim Foster   
      
      The photo sequence shows the  green flash phenomenon during   
       moonset on May 15, 2022, as observed from Porto Ottiolu, Sardinia,   
      Italy. Most of us have heard the color “blue” used to describe the Moon   
      but rarely is the color “green” mentioned. Green flashes and  green   
      colored rims of the Moon occur because of  atmospheric dispersion –   
      near the horizon our eyes detect separate images for red, yellow, and   
      green colors. Since green is the topmost color we see, when atmospheric   
      conditions are right a burst of green light may be briefly noted as the   
      upper rim dips below the horizon.   
      
      
      Porto Ottiolu, Budoni, Sardinia, Italy Coordinates: 40.7374, 9.7079   
      
      
   Related EPODs   
      
       Lunar Green Flash Sequence  La Palma Pillar  Twinned Rainbow   
       Double Cloud Shadow off the Coast of Croatia  Dust Devils on a   
      Dry Lakebed  Moondog and Etna Lava Flow   
       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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