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File:13 Nitrogen Oxygen Emission (2844511020).jpg

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Amounts of nitrogen and oxygen varies by altitude. This affects the colors of an aurora.

The decay of oxygen above 200 km produces red while below 200 green is produced. Below 100 km not enough atomic oxygen exists to have an effect.

Nitrogen produces blue and violet when it decays at the middle altitudes and magenta at the lowest altitudes.

Data from NCAR/HAO.

The image was created for a <a href="http://www.scitechlab.com/" rel="nofollow">www.scitechlab.com/</a> blog post on the <a href="http://scitechlab.wordpress.com/2008/09/01/the-auroras-or-northern-polar-lights/" rel="nofollow">Northern Lights</a>.
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Source 13 Nitrogen Oxygen Emission
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Image Editor at https://flickr.com/photos/11304375@N07/2844511020. It was reviewed on 4 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

4 December 2020

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current13:42, 4 December 2020Thumbnail for version as of 13:42, 4 December 2020950 × 643 (440 KB)Eyes Roger (talk | contribs)Transferred from Flickr via #flickr2commons

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