Subj : ES Picture of the Day 30  2022
To   : All
From : Dan Richter
Date : Thu Jun 30 2022 12:00:58

 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.


 Roll and Lenticular Clouds Above Taiwan

   June 30, 2022

    DSC_7148(1)

   Photographer:  Wei-Chun Lin

   Summary Authors:  Wei-Chun Lin;  Cadan Cummings

   The photo above shows both a roll cloud (at far left) and lenticular
   cloud (center of photo) as seen from a hilltop near Taipei, Taiwan. As
   soon as I spotted satellite images showing the possibility of these
   cloud structures, I rode my motorcycle to  Yangmingshan National
   Park near Taipei.

    Roll clouds are a type of  arcus cloud that form on the leading
   edge of a storm. Unlike other shelf clouds, roll clouds are
    separate from the thunderstorm base. This specific roll cloud was
   still far away from the coast at the time of the photo. Their name
   comes from their horizontal “rolling” motion.

   Conversely,  lenticular clouds are not related with storms. Instead,
   these uniquely shaped clouds form when moist air cools and then
    condensates as it passes over mountains. When the stable is forced
   over the ridge,  atmospheric waves are created that produce the
   cloud’s characteristic lens-shape appearance.  Click here for a
   time-lapse video of the clouds.

   Photo details: Nikon D850, f/11, 1/500 second exposure, 24mm
     * Taipei, Taiwan Coordinates: 25.033, 121.565

Related EPODs

    Roll and Lenticular Clouds Above Taiwan  Moonlit Monte Viso
    Cumulonimbus Montage Above Taipei, Taiwan  Asperitas Clouds
   Observed Above Hong Kong  Anticrepuscular Rays at the Winter Sunset
    Kelvin-Helmholtz Wave Clouds Over Taipei
    More...

Cloud Links

     *  Atmospheric Optics
     *  The Cloud Appreciation Society
     *  Cloud Atlas
     *  Color and Light in Nature

-
   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
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