Mars Global Reference Atmospheric Model 2001 Version (Mars-GRAM 2001): Users Guide

NASA/TM-210961, Justus*, C.G. and Johnson, D.L., Mars Global Reference Atmospheric Model 2001 Version (Mars-GRAM 2001): Users Guide, George C. Marshall Space Flight Center Marshall Space Flight Center, AL 35812, National Aeronautics and Space Administration Washington, DC 20546-0001, Prepared by Engineering Systems Department, Engineering Directorate *Computer Sciences Corporation, April 2001, pp. 64, Format(s): PDF 4488k

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This document presents Mars Global Reference Atmospheric Model 2001 Version (Mars-GRAM 2001) and its new features. As with the previous version (Mars-2000), all paramerizations for 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

Keywords:	mars global reference atmospheric model, mars-gram, atmospheric density, atmospheric temperature, atmospheric models, winds
Subjects:	Astronautics: Spacecraft Design, Testing And Performance
ID Code:	549
Deposited On:	02 August 2002