Spectral Line Inversion For Sounding Of Stratospheric Minor Constituents By Infrared Heterodyne Technique From Balloon Altitudes

Mian M. Abbas; Gary L. Shapiro; Frank Allario; J. M. Alvarez

doi:10.1117/12.965817

8 September 1981 Spectral Line Inversion For Sounding Of Stratospheric Minor Constituents By Infrared Heterodyne Technique From Balloon Altitudes

Mian M. Abbas, Gary L. Shapiro, Frank Allario, J. M. Alvarez

Author Affiliations +

Proceedings Volume 0286, Laser Spectroscopy for Sensitive Detection; (1981) https://doi.org/10.1117/12.965817
Event: 1981 Technical Symposium East, 1981, Washington, D.C., United States

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.

Citation Download Citation

Mian M. Abbas, Gary L. Shapiro, Frank Allario, and J. M. Alvarez "Spectral Line Inversion For Sounding Of Stratospheric Minor Constituents By Infrared Heterodyne Technique From Balloon Altitudes", Proc. SPIE 0286, Laser Spectroscopy for Sensitive Detection, (8 September 1981); https://doi.org/10.1117/12.965817

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KEYWORDS

Heterodyning

Absorption

Infrared radiation

Stratosphere

Oscillators

Spectral resolution

Infrared spectroscopy

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