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

Authors :
Kleinbohl, Armin
Bremer, Holger
Kullmann, Harry
Kuttippurath, Jayanarayanan
Browell, Edward V
Canty, Timothy
Salawitch, Ross J
Toon, Geoffrey C
Nothol, Justus
Source :
Geophysical Research Letters. 32
Publication Year :
2005
Publisher :
United States: NASA Center for Aerospace Information (CASI), 2005.

Abstract

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.

Subjects

Subjects :
Geophysics

Details

Language :
English
Volume :
32
Database :
NASA Technical Reports
Journal :
Geophysical Research Letters
Publication Type :
Report
Accession number :
edsnas.20060044080
Document Type :
Report