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Date Taken:

August 14, 2006

Photograph By:

Chad Carpenter

License Type:

Creative Commons CC BY-NC-ND 4.0.

Nacreous clouds appear above Our Lady of the Snows shrine near McMurdo Station. These polar stratospheric clouds at 80,000 feet are the highest of all clouds. They only occur in the polar regions when the stratospheric temperature dips below 100 degrees below zero Fahrenheit. They are also the site of chemical reactions that break down ozone in the upper atmosphere and contribute to the creation of the ozone hole above Antarctica.

Associated Keywords

Antarctica, CC BY-NC-ND 4.0., Clouds, Creative Commons, Island, Memorial, Nacreous, NSF, Ross Island, Scenery, Scenic, Weather

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This photo is in the public domain.

Photos whose copyright has expired or were taken by government employees as part of their job duties are considered to be in the public domain. Public domain works are not subject to copyright laws. Anyone may download these photos and use them freely, even for commercial purposes.

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This photo is covered by a Creative Commons license. Please see the Usage and Submissions page for more information. Use of this photo requires the following:

(1.) The user must give appropriate credit to the photographer and the National Science Foundation (NSF) and provide a link to the Creative Commons license. (2.) Use of the photo must be for non-commercial purposes only. (3.) No derivative works may be made with the original photo without the explicit permission of the photographer.

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