Unexpected high levels of NO observed at South Pole
Article first published online: 7 DEC 2012
Copyright 2001 by the American Geophysical Union.
Geophysical Research Letters
Volume 28, Issue 19, pages 3625–3628, 1 October 2001
How to Cite
(2001), Unexpected high levels of NO observed at South Pole. Geophysical Research Letters, 28: 3625–3628. doi: 10.1029/2000GL012584
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Accepted: 30 JUN 2001
- Manuscript Received: 8 NOV 2000
Reported here are the first Austral summer measurements of NO at South Pole (SP). They are unique in that the levels are one to two orders of magnitude higher (i.e., median, 225 pptv) than measured at other polar sites. The available evidence suggests that these elevated levels are the result of photodenitrification of the snowpack, in conjunction with a very thin atmospheric mixing depth. Important chemical consequences included finding the atmospheric oxidizing power at SP to be an order of magnitude higher than expected.