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Mars Global Reference Atmospheric Model 2001 Version (Mars-GRAM 2001): Users GuideThis document presents Mars Global Reference Atmospheric Model 2001 Version (Mars-GRAM 2001) and its new features. As with the previous version (mars-2000), all parameterizations fro temperature, pressure, density, and winds versus height, latitude, longitude, time of day, and season (Ls) use input data tables from NASA Ames Mars General Circulation Model (MGCM) for the surface through 80-km altitude and the University of Arizona Mars Thermospheric General Circulation Model (MTGCM) for 80 to 70 km. Mars-GRAM 2001 is based on topography from the Mars Orbiter Laser Altimeter (MOLA) and includes new MGCM data at the topographic surface. A new auxiliary program allows Mars-GRAM output to be used to compute shortwave (solar) and longwave (thermal) radiation at the surface and top of atmosphere. This memorandum includes instructions on obtaining Mars-GRAN source code and data files and for running the program. It also provides sample input and output and an example for incorporating Mars-GRAM as an atmospheric subroutine in a trajectory code.
Document ID
Document Type
Technical Memorandum (TM)
Justus, C. G. (Computer Sciences Corp. United States)
Johnson, D. L. (NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
September 7, 2013
Publication Date
April 1, 2001
Subject Category
Spacecraft Design, Testing and Performance
Report/Patent Number
NAS 1.15:210961
Distribution Limits
Work of the US Gov. Public Use Permitted.

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