Subj : ES Picture of the Day 13  2022
To   : All
From : Dan Richter
Date : Tue Sep 13 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.


 iridescent Pileus Cloud Observed from Ashburn, Virginia

   September 13, 2022

    Lindsay_IMG_5010 (004)

   Photographer: Linsday Hank

   Summary Author: Lindsay Hank;  Jim Foster

   The photo above showing a particularly  colorful, pileus type cloud
   was taken from Ashburn, Virginia, as a  thunderstorm approached just
   before 7:00 p.m. local time on August 9, 2022. The camera was facing
   west, in the opposite direction a  rainbow would be seen. Though the
   pileus itself is mostly hidden by the darker storm clouds, the
    iridescent colors help to reveal it.

   In thunderstorm  updrafts, rapidly rising air into a very humid
   layer may form a silky looking, rounded cloud, called a pileus cloud.
   If the cloud is in the vicinity of the Sun, and if the  cloud
   droplets are similarly sized, then  diffraction of sunlight will
   produce iridescence. Note that the colors typically observed aren't as
   attention getting as seen here. Always take care to protect your eyes
   when looking anywhere near the Sun.


   Ashburn, Virginia Coordinates: 39.0438, -77.4874


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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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