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Evidence for high-altitude haze thickening on the dark side of Venus from 10-micron heterodyne spectroscopy of CO2Infrared heterodyne spectroscopy provides data for isolated spectral lines with a spectral resolution which is small compared to the Doppler width. Heterodyne spectroscopy of CO2 lines near 10 micrometers was first reported for the atmosphere of Venus by Betz et al. (1976). The present investigation is concerned with observations of two absorption lines of (C-12)(O-16)2 conducted with an infrared heterodyne spectrometer interfaced with a solar telescope. The 10.8598-micrometer P(44) line was observed on the day side of Venus and the 10.3337-micrometer R(8) line was observed on the night side. It is shown that continuous opacity due to haze, and possible departures from vibrational LTE in CO2, are crucial considerations in fitting the observed lines.
Document ID
19820047721
Document Type
Reprint (Version printed in journal)
Authors
Deming, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Espenak, F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Jennings, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kostiuk, T. (NASA Goddard Space Flight Center Infrared and Radio Astronomy Branch, Greenbelt, MD, United States)
Mumma, M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Publication Information
Publication: Icarus
Volume: 49
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Other