Subj : ES Picture of the Day 11  2022
To   : All
From : Dan Richter
Date : Fri Mar 11 2022 11:00:28

 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.


 Crepuscular Rays in the Philippines and Rainbow Wheel Over Belgium

   March 11, 2022


    IMG20210701183359

    Arc-en-ciel-30mar2018-soir(1)

   Photographers:  Joaquinna Reigne P. Barbosa (top);  Thierry
   Lombry (bottom)

   Summary Author:  Joaquinna Reigne P. Barbosa;  Thierry Lombry;
    Cadan Cummings

   The top photo features  crepuscular rays visible behind clouds at
   sunset on  Boracay Island, Philippines. Crepuscular Rays, also known
   as “God rays”, are  sunbeams that usually appear during sunrise or
   sunset. The rays form when the  Sun passes behind a cloud or
   landform on the horizon, and a portion of the light shines between the
   gaps. These sunbeams are emphasized when there is  dust, smoke, and
   other small particles in the atmosphere due to increased  Rayleigh
   scattering of incoming sunlight. This photo was taken on July 1, 2021.

   In contrast, the bottom photo taken near Namur, Belgium on March 30,
   2018 shows sunbeams emanating from the horizon near a  rainbow.
   Atmospheric optics events can either originate from the horizon near
   the Sun or at the  antisolar point opposite the Sun. Since rainbows
   always arise at the point in the sky directly opposite the Sun, these
   sunbeams are an excellent example of  anti-crepuscular rays often
   called a  rainbow wheel. The phenomenon was named because the rays
   appear like spokes of a wheel formed with the  primary and secondary
   rainbows. Both the crepuscular and anti-crepuscular rays in the images
   above appear to diverge from the horizon due to  perspective.
     * Boracay Island, Philippines Coordinates: 11.9674, 121.9248
     * Namur, Belgium Coordinates: 50.4649, 4.8651

Related EPODs

    Crepuscular Rays in the Philippines and Rainbow Wheel Over Belgium
    Snow Halo Over Mala Fatra Mountains  Atmospheric Optics Observed
   in Fog  Archive - Picket Fence Aurora  Inferior Mirage In
   Venetian Lagoon  Anticrepuscular Rays Over the Ionian Sea
    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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