Computer Science
Scientific paper
Jun 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..430...60t&link_type=abstract
The eleventh international conference on fourier transform spectroscopy. AIP Conference Proceedings, Volume 430, pp. 60-73 (199
Computer Science
Propagation, Transmission, Attenuation, And Radiative Transfer, Spectral Absorption By Atmospheric Gases
Scientific paper
The chemical state of the upper atmosphere can be determined from FTS measurements of its infrared thermal emission spectrum. The atmosphere is self-luminous in this band, and can be measured in any direction, day or night. This paper focuses on results from the Smithsonian's far-infrared spectrometer FIRS-2. The techniques of emission and absorption spectroscopy are compared, and the unique features of FIRS-2 discussed. The driving force behind each FIRS-2 flight campaign has been the issue of ozone depletion in the stratosphere. In the Arctic winter vortex we measured large scale chemical change and vertical subsidence of the stratosphere. On a balloon platform we measured the abundances of radical and precursor species which control ozone loss in the middle stratosphere. We show evidence for two cases of ``missing chemistry'' in the stratosphere.
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