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Comparison of column abundances from three infrared spectrometers during AASE II

Comparison of column abundances from three infrared spectrometers during AASE II

Authors :
Kenneth W. Jucks
William G. Mankin
David G. Johnson
M. T. Coffey
Geoffrey C. Toon
Wesley A. Traub
Source :
Geophysical Research Letters. 21:2591-2594
Publication Year :
1994
Publisher :
American Geophysical Union (AGU), 1994.

Abstract

Three Fourier transform infrared (FTIR) spectromenters were based on board the NASA DC-8 during the second Airborne Arctic Stratospheric Expedition (AASE II) in 1992. Two FTIRs used solar absorption and one used thermal emission. We compare over 2000 measurements from these 3 FTIRs, on 12 DC-8 flights, for closely coincident air masses and times, both inside and outside the polar vortex. In the majority of cases the offset biases are quite small, in the range 1-4%, and comparable to the absolute precisions expected. In most cases the rms scatter is in the range 4-11%; this scatter is unlikely to be geophysical, but rather is probably instrumental or analytical in origin.

Details

ISSN :
00948276
Volume :
21
Database :
OpenAIRE
Journal :
Geophysical Research Letters
Accession number :
edsair.doi...........8d47263464f1c837fa031ae76eb88bc9
Full Text :
https://doi.org/10.1029/94gl01173