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Proceedings Paper

Spectral Line Inversion For Sounding Of Stratospheric Minor Constituents By Infrared Heterodyne Technique From Balloon Altitudes
Author(s): Mian M. Abbas; Gary L. Shapiro; Frank Allario; J. M. Alvarez
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Paper Abstract

Current algorithms employed for the inversion of infrared laser heterodyne measurements of tenuous gases in the stratosphere by solar occultation are the onion peel technique and the spectral inversion technique. One of the basic differences between the two techniques is that the onion peel algorithm requires data obtained by an instrument pointed at a number of altitudes from the Earth's limb whereas the spectral algorithm can use data obtained by an instrument pointed at only one altitude above the Earth's limb. An experiment approach and inversion technique are discussed which optimize the retrieval of concentration profiles by incorporating the onion peel data collection scheme into the spectral inversion technique. A description of an infrared heterodyne spectrometer and the mode of observations for solar occultation measurement are given. The results of inversions of some synthetic Ck0 spectral lines corresponding to solar occultation limb-scans of the stratosphere are presented, indicating considerable improvement in the accuracy of the retrieved profiles. The effects of noise on the accuracy of retrievals are discussed for realistic situations.

Paper Details

Date Published: 8 September 1981
PDF: 6 pages
Proc. SPIE 0286, Laser Spectroscopy for Sensitive Detection, (8 September 1981); doi: 10.1117/12.965817
Show Author Affiliations
Mian M. Abbas, Drexel University (United States)
Gary L. Shapiro, Drexel University (United States)
Frank Allario, NASA/Langley Research Center (United States)
J. M. Alvarez, NASA/Langley Research Center (United States)

Published in SPIE Proceedings Vol. 0286:
Laser Spectroscopy for Sensitive Detection
Jerry A. Gelbwachs, Editor(s)

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