Subj : ES Picture of the Day 01  2022
To   : All
From : Dan Richter
Date : Mon Aug 01 2022 12:01:08

 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.


 Atacama Desert and Volcanic Twilight

   August 01, 2022


    DuskOnMarsWSMALLer

   Photographer:  Tomas Slovinsky
   Summary Author:  Tomas Slovinsky;  Jim Foster

   The photo above showing a reddened twilight sky over a barren landscape
   comes from San Pedro de Atacama, Chile. It was taken on April 22, 2022.
   The  Atacama Desert is almost at the same latitude as the  Tonga
   Volcano that erupted in December of 2021. Throughout the autumn months
   (spring in the Northern Hemisphere), during each twilight period the
   sky was imbued with deep red colors as  volcanic ash in the upper
   atmosphere acted to increase the pathlength of sunlight (and
   moonlight), thereby effectively extinguishing the shorter wavelength
   colors from our view.

   In many ways, the resulting landscape/nightscape resembled that of
    Mars at sunset. Also found in the Atacama are ancient, dry
   riverbeds, not too dissimilar from  the ones discovered on Mars,
   where water once flowed in the past. On evenings such as this, you
   could almost imagine that you were on the Red Planet. Note that the
   patch of light at right center, to the right of the Milky Way, is the
    Large Magellanic Cloud.


   San Pedro de Atacama, Chile Coordinates: -22.9087, -68.1997


Related EPODs

    Atacama Desert and Volcanic Twilight  Triple Halo Event - 22°
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   Lake, Maine  Cloud Corona Over the SIerra Nevada  Northern Lights
   Take Center Stage Over Central Alaska  Solar Halo Over Torres
   Vedras, Portugal
    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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