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Stratospheric ozone measurement with an infrared heterodyne spectrometerMeasurements of a stratospheric ozone concentration profile are made by detecting infrared absorption lines with a heterodyne spectrometer. The infrared spectrometer is based on a line-by-line tunable CO2 lasers, a liquid-nitrogen cooled HgCdTe photomixer, and a 64-channel spectral line receiver. The infrared radiation from the source is mixed with local-oscillator radiation. The difference frequency signal in a bandwidth above and below the local-oscillator frequency is detected. The intensity in each sideband is found by subtracting sideband contributions. It is found that absolute total column density is 0.32 plus or minus 0.02 cm-atm with a peak mixing ratio at about 24 km. The (7,1,6)-(7,1,7) O3 line center frequency is identified as 1043.1772/cm. Future work will involve a number of ozone absorption lines and measurements of diurnal variation. Completely resolved stratospheric lines may be inverted to yield concentration profiles of trace constituents and stratospheric gases.
Document ID
19780050215
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Abbas, M. M.
(NASA Goddard Space Flight Center Infrared and Radio Astronomy Branch, Greenbelt; Maryland, University, College Park, Md., United States)
Kostiuk, T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mumma, M. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Buhl, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kunde, V. G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brown, L. W.
(NASA Goddard Space Flight Center Infrared and Radio Astronomy Branch, Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
April 1, 1978
Publication Information
Publication: Geophysical Research Letters
Volume: 5
Subject Category
Geophysics
Accession Number
78A34124
Distribution Limits
Public
Copyright
Other

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