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Proceedings Paper

Measurement Of Atmospheric Emission Using A Balloon-Borne Cryogenic Fourier Spectrometer
Author(s): H. Sakai; T. C. Li; J. Pritchard; F. J. Murcray; F. H. Murcray; J. Williams; G. Vanasse
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Paper Abstract

In lower atmosphere, the tropopause and the stratosphere, the infrared emission radiance level directly relates to temperature and concentration of the molecules responsible for the emission. Our experiment was planned to obtain high precision data on altitude profiles of various atmospheric parameters (temperature, chemical composition, etc.) by measuring the infrared emission spectrum of the atmosphere from a balloon-borne platform. The emission measurement distinguished itself from the absorption measurement on the following aspects. A major distinction is derived from the fact that no definite source is required. The interferometer can point to any direction through the atmosphere, thereby not dictated by the diurnal change in the solar position. The atmospheric pollutant detection sensitivity can be made high in our experiment, because all lines are observed through a very long path in the atmosphere. Weak lines are observable in a well defined line structure, while strong lines show a saturation with respect to a corresponding black-body radiance. The diurnal variations, if they exist, are readily observable in the data.

Paper Details

Date Published: 29 October 1981
PDF: 3 pages
Proc. SPIE 0289, 1981 Intl Conf on Fourier Transform Infrared Spectroscopy, (29 October 1981); doi: 10.1117/12.932168
Show Author Affiliations
H. Sakai, University of Massachusetts (United States)
T. C. Li, University of Massachusetts (United States)
J. Pritchard, University of Massachusetts (United States)
F. J. Murcray, University of Denver (United States)
F. H. Murcray, University of Denver (United States)
J. Williams, University of Denver (United States)
G. Vanasse, Air Force Geophysics Laboratory/OPI (United States)

Published in SPIE Proceedings Vol. 0289:
1981 Intl Conf on Fourier Transform Infrared Spectroscopy
Hajime Sakai, Editor(s)

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