Subj : ES Picture of the Day 13  2022
To   : All
From : Dan Richter
Date : Sat Aug 13 2022 12:00:34

 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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    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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