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Record 4 of 18
Martian atmosphere modeling between 0.4 and 3.5 microns - Comparison of theory and experiment
Author and Affiliation:
Egan, W. G.(Grumman Aerospace Corp., Bethpage, NY, United States)
Fischbein, W. L.(Grumman Aerospace Corp., Bethpage, NY, United States)
Hilgeman, T.(Grumman Aerospace Corp., Bethpage, NY, United States)
Smith, L. L.(Grumman Aerospace Corp., Bethpage, N.Y., United States)
Abstract: A model of the lower atmosphere of Mars has been constructed that combines aerosol absorption and scattering with a line-by-line analysis of CO2 and H2O in a multilayer radiative transfer program. Aerosol composition previously inferred from the NASA Lear Jet Observatory data was used to measure the optical complex indices of refraction of appropriate Martian analogs from 0.4 to 2.5 microns. The aerosol vertical particle density scale was deduced using the Viking camera observations of the soil and sky intensities between 0.4 and 1.0 microns in comparison with those modeled using a multilayer Mie scattering program. A comparison of observed Mars atmospheric absorptions was made with those obtained using Lorentz, Voigt, and Doppler line profiles in a multilayer model of the CO2 and H2O. The Voigt line profile of CO2 absorption at approximately 4976 kaysers was then combined in a multilayer aerosol model of the Martian atmosphere. An evaluation of the effect on the line shape was made using several aerosol loadings.
Publication Date: Jan 01, 1978
Document ID:
19790029098
(Acquired Dec 01, 1995)
Accession Number: 79A13111
Subject Category: LUNAR AND PLANETARY EXPLORATION
Document Type: Conference Proceedings
Publication Information: (SEE A79-13101 03-91)
Publisher Information: Canada
Meeting Information: In: Symposium on Planetary Atmospheres; 19th; August 16-19, 1977; Ottawa; Canada
Contract/Grant/Task Num: NAS2-8664
Financial Sponsor: NASA; United States
Organization Source: Grumman Aerospace Corp.; Bethpage, NY, United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTRONOMICAL SPECTROSCOPY; ATMOSPHERIC COMPOSITION; ATMOSPHERIC MODELS; INFRARED ASTRONOMY; MARS ATMOSPHERE; AEROSOLS; ATMOSPHERIC CIRCULATION; DOPPLER EFFECT; FOURIER TRANSFORMATION; LINE SPECTRA; MIE SCATTERING; RADIATIVE TRANSFER; VOIGT EFFECT
Imprint And Other Notes: In: Symposium on Planetary Atmospheres, 19th, Ottawa, Canada, August 16-19, 1977, Proceedings. (A79-13101 03-91) Ottawa, Royal Society of Canada, 1978, p. 57-60.
Availability Source: Other Sources
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