ISSTT Proceedings

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Atmospheric Remote Sensing in the Terahertz Region

Authors:
Paul B. Hays, Hilary E. Snell
Abstract:
Remote Sensing of major and minor constituents gases is of very great importance in understanding the atmospheres of earth and planets. Of the minor gases in an atmsophere the most difficult species to observe are often the radicals such as atomic oxygen, hydroxyl, chlorine monoxide and species such as hydrogen chloride, hydrogen fluoride, among others. Observations in the terahertz region of the spectrum have been successful in determining the density of many of these species including the hydroxyl radical. However, the instruments used to date are complex and in general not suitable for spaceflight on small satellites. This study has as its primary goal the presentation of a simple, compact scanning Fabry-Perot interferometer which has the capability to make observations of minor constituents in an atmosphere competative with larger and more complex instrumentation. We illustrate the use of this new instrument by showing how the hydroxyl in the earth's stratosphere can be detected from observations taken at balloon altitude.
Categories:
Applications
Year:
1990
Session:
5
Full-text:
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Page Number(s):
482-491