Denitrification in the Arctic mid-winter 2004/2005 observed by airborne submillimeter radiometry

We present measurements of unusually low mixing ratios of HNO3 in the exceptionally cold Arctic vortex of late-January and early-February 2005. The measurements were obtained by the airborne submillimeter radiometer ASUR during the polar aura validation experiment (PAVE). The distribution of HNO3 in...

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Bibliographic Details
Main Authors: Kleinbohl, Armin, Bremer, Holger, Kullmann, Harry, Kuttippurath, Jayanarayanan, Browell, Edward V., Canty, Timothy, Salawitch, Ross J., Toon, Geoffrey C., Nothol, Justus
Format: Article in Journal/Newspaper
Language:English
Published: American Geophysical Union 2006
Subjects:
airborne submillimeter radiometer (ASUR)
deintrification
Arctic winter
measurements
Arctic
Online Access:http://hdl.handle.net/2014/39244
Description
Summary:We present measurements of unusually low mixing ratios of HNO3 in the exceptionally cold Arctic vortex of late-January and early-February 2005. The measurements were obtained by the airborne submillimeter radiometer ASUR during the polar aura validation experiment (PAVE). The distribution of HNO3 inside the vortex reaches minima below 4 ppbv around 22 km altitude and maxima above 13 ppbv around 16 km altitude, with a considerable spatial variability. NASA/JPL

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