Physics
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2591t&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 23, p. 2591-2594
Physics
5
Abundance, Air Pollution, Air Sampling, Arctic Regions, Atmospheric Chemistry, Atmospheric Pressure, Atmospheric Temperature, Emission Spectra, Pollution Monitoring, Spectroscopic Analysis, Airborne Equipment, Dc 8 Aircraft, Fourier Transformation, Infrared Spectrometers, Least Squares Method, Line Spectra, Pressure Measurement
Scientific paper
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.
Coffey Timothy M.
Johnson David G.
Jucks Kenneth W.
Mankin William G.
Toon Geoffrey C.
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