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Mars global reference atmosphere model (Mars-GRAM)Mars-GRAM is an empirical model that parameterizes the temperature, pressure, density, and wind structure of the Martian atmosphere from the surface through thermospheric altitudes. In the lower atmosphere of Mars, the model is built around parameterizations of height, latitudinal, longitudinal, and seasonal variations of temperature determined from a survey of published measurements from the Mariner and Viking programs. Pressure and density are inferred from the temperature by making use of the hydrostatic and perfect gas laws relationships. For the upper atmosphere, the thermospheric model of Stewart is used. A hydrostatic interpolation routine is used to insure a smooth transition from the lower portion of the model to the Stewart thermospheric model. Other aspects of the model are discussed.
Document ID
19920019251
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Justus, C. G.
(Georgia Inst. of Tech. Atlanta., United States)
James, Bonnie F.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Lunar and Planetary Inst., Papers Presented to the Workshop on the Evolution of the Martian Atmosphere
Subject Category
Lunar And Planetary Exploration
Accession Number
92N28494
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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