Subj : ES Picture of the Day 24  2022
To   : All
From : Dan Richter
Date : Sat Dec 24 2022 11:01:24

 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.


 Halo Display Observed from Graubunden, Switzerland

   December 23, 2022


    Sean_4C5DBEC2-262F-4278-8E95-33DAF507563E

   Photographer:  Sean Lybrand
   Summary Author:  Sean Lybrand

   Shown above is a portion of  halo display I had the pleasure to
   observe over the Swiss Alps on October 11, 2022.  Ice crystals in
   clouds or free falling through the atmosphere can create a medley of
   beautiful halos; some very obvious and some quite faint.

   Conspicuous here are the  22-degree halo, both  sundogs or
   parhelia, the  parhelic circle, the upper  tangent arc (tangent
   to the 22-halo) and the suncave  Parry arc (just above the upper
   tangent arc). Not nearly as evident are the rarely seen upper and lower
    Lowitz arcs (in the vicinity of the parhelia).


   Sent, Graubunden, Switzerland. Coordinates: 46.81016, 10.34032


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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?

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   Space Research Association.

https://epod.usra.edu
 
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