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From: Dan Richter (1:317/3)
To: All
Date: Fri, 12.03.21 12:00
ES Picture of the Day 12 2021
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.

Helical Clouds

March 12, 2021


Photographer: Nelson Reticence
Summary Authors: Nelson Reticence; Jim Foster
These eye-catching clouds were observed over Holyoke,
Massachusetts, at sunset on November 24, 2020. Looking like helical DNA
strands or breaking waves, they form where the layer of air that
contains the clouds moves at a different velocity and has a
different density than the air in the layer just above the clouds. This
results in air flows that tend to have a distinct serpentine
* Holyoke, Massachusetts Coordinates: 42.2043, -72.6162

Related EPODs

Helical Clouds Archive - South Sandwich Wakes Changing
Clouds Ahead Kelvin-Helmholtz Clouds Over Albuquerque, New Mexico
Archive - Virga and Rays Sunrise Mammatus Clouds

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.

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