Mars Global Reference Atmospheric Model 2000 Version Mars Gram 2000 Users Guide
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Mars Global Reference Atmospheric Model 2000 Version Mars Gram 2000
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-03
Mars Global Reference Atmospheric Model 2000 Version Mars Gram 2000 written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-03 with categories.
This report presents Mars Global Reference Atmospheric Model 2000 Version (Mars-GRAM 2000) and its new features. All parameterizations for temperature, pressure, density, and winds versus height, latitude, longitude, time of day, and L(sub s) have been replaced by input data tables from NASA Ames Mars General Circulation Model (MGCM) for the surface through 80-km altitude and the University of Arizona Mars Thermospheric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 170 km. A modified Stewart thermospheric model is still used for higher altitudes and for dependence on solar activity. "Climate factors" to tune for agreement with GCM data are no longer needed. Adjustment of exospheric temperature is still an option. Consistent with observations from Mars Global Surveyor, a new longitude-dependent wave model is included with user input to specify waves having 1 to 3 wavelengths around the planet. A simplified perturbation model has been substituted for the earlier one. An input switch allows users to select either East or West longitude positive. This memorandum includes instructions on obtaining Mars-GRAM 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.Justus, C. G. and James, B. F.Marshall Space Flight CenterATMOSPHERIC GENERAL CIRCULATION MODELS; MARS ATMOSPHERE; MATHEMATICAL MODELS; TEMPERATURE; PRESSURE; DENSITY (MASS/VOLUME); WIND (METEOROLOGY); PARAMETERIZATION; LONGITUDE; TRAJECTORIES; THERMOSPHERE; TABLES (DATA); SUBROUTINES; SOLAR ACTIVITY; PERTURBATION; EXOSPHERE; ATMOSPHERIC MODELS; ATMOSPHERIC CIRCULATION
Mars Global Reference Atmospheric Model 2001 Version Mars Gram 2001 Users Guide
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-09-20
Mars Global Reference Atmospheric Model 2001 Version Mars Gram 2001 Users Guide written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-20 with Science categories.
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 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.Justus, C. G. and Johnson, D. L.Marshall Space Flight CenterMARS ATMOSPHERE; ATMOSPHERIC GENERAL CIRCULATION MODELS; MARS SURFACE; PARAMETERIZATION; ATMOSPHERIC MODELS; ATMOSPHERIC CIRCULATION; TOPOGRAPHY; THERMOSPHERE; LONG WAVE RADIATION; TRAJECTORIES
Mars Global Reference Atmospheric Model Mars Gram Version 3 8
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-03
Mars Global Reference Atmospheric Model Mars Gram Version 3 8 written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-03 with categories.
Mars Global Reference Atmospheric Model (Mars-GRAM) Version 3.8 is presented and its new features are discussed. Mars-GRAM uses new values of planetary reference ellipsoid radii, gravity term, and rotation rate (consistent with current JPL values) and includes centrifugal effects on gravity. The model now uses NASA Ames Global Circulation Model low resolution topography. Curvature corrections are applied to winds and limits based on speed of sound are applied. Altitude of the F1 ionization peak and density scale height, including effects of change of molecular weight with altitude are computed. A check is performed to disallow temperatures below CO2 sublimination. This memorandum includes instructions on obtaining Mars-GRAM source code and data files and running the program. Sample input and output are provided. An example of incorporating Mars-GRAM as an atmospheric subroutine in a trajectory code is also given.Justus, C. G. and James, B. F.Marshall Space Flight CenterMARS (PLANET); MARS ATMOSPHERE; ATMOSPHERIC TEMPERATURE; ATMOSPHERIC MODELS; ATMOSPHERIC DENSITY; SUBROUTINES; USER MANUALS (COMPUTER PROGRAMS); COMPUTER AIDED TOMOGRAPHY; TOPOGRAPHY
Mars Global Reference Atmospheric Model 2001 Version Mars Gram 2001 Users Guide
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Author : Carl Gerald Justus
language : en
Publisher:
Release Date : 2001
Mars Global Reference Atmospheric Model 2001 Version Mars Gram 2001 Users Guide written by Carl Gerald Justus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Mars Global Reference Atmospheric Model 2010 Version
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-05-22
Mars Global Reference Atmospheric Model 2010 Version written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-22 with categories.
This Technical Memorandum (TM) presents the Mars Global Reference Atmospheric Model 2010 (Mars-GRAM 2010) and its new features. Mars-GRAM is an engineering-level atmospheric model widely used for diverse mission applications. Applications include systems design, performance analysis, and operations planning for aerobraking, entry, descent and landing, and aerocapture. Additionally, this TM includes instructions on obtaining the Mars-GRAM source code and data files as well as running Mars-GRAM. It also contains sample Mars-GRAM input and output files and an example of how to incorporate Mars-GRAM as an atmospheric subroutine in a trajectory code. Justh, H. L. Marshall Space Flight Center ATMOSPHERIC GENERAL CIRCULATION MODELS; MARS GLOBAL SURVEYOR; MARS RECONNAISSANCE ORBITER; MARS (PLANET); MARS ATMOSPHERE; CLIMATE MODELS; TOPOGRAPHY; BOUNDARY LAYERS; WIND MEASUREMENT; ATMOSPHERIC TEMPERATURE; ATMOSPHERIC DENSITY; SYSTEMS ENGINEERING; AEROBRAKING; AEROCAPTURE; REFERENCE ATMOSPHERES
Mars Global Reference Atmospheric Model Mars Gram 3 34
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-18
Mars Global Reference Atmospheric Model Mars Gram 3 34 written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-18 with categories.
This is a programmer's guide for the Mars Global Reference Atmospheric Model (Mars-GRAM 3.34). Included are a brief history and review of the model since its origin in 1988 and a technical discussion of recent additions and modifications. Examples of how to run both the interactive and batch (subroutine) forms are presented. Instructions are provided on how to customize output of the model for various parameters of the Mars atmosphere. Detailed descriptions are given of the main driver programs, subroutines, and associated computational methods. Lists and descriptions include input, output, and local variables in the programs. These descriptions give a summary of program steps and 'map' of calling relationships among the subroutines. Definitions are provided for the variables passed between subroutines through common lists. Explanations are provided for all diagnostic and progress messages generated during execution of the program. A brief outline of future plans for Mars-GRAM is also presented. Justus, C. G. and James, Bonnie F. and Johnson, Dale L. Marshall Space Flight Center ATMOSPHERIC MODELS; USER MANUALS (COMPUTER PROGRAMS); MARS ATMOSPHERE; COMPUTER PROGRAMMING; MARS (PLANET); PLANETARY METEOROLOGY; SUBROUTINES; BATCH PROCESSING; COMPUTER PROGRAMS...
Planetary Atmospheres
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Author : COSPAR. Scientific Commission C. C3.1 Symposium
language : en
Publisher:
Release Date : 2002
Planetary Atmospheres written by COSPAR. Scientific Commission C. C3.1 Symposium and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Planets categories.
Low Cost Mars Surface Exploration The Mars Tumbleweed
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Author : Jeffrey Antol
language : en
Publisher:
Release Date : 2003
Low Cost Mars Surface Exploration The Mars Tumbleweed written by Jeffrey Antol and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Mars (Planet) categories.
A Revised Thermosphere For The Mars Global Reference Atmospheric Model Mars Gram Version 3 4
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-02
A Revised Thermosphere For The Mars Global Reference Atmospheric Model Mars Gram Version 3 4 written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-02 with categories.
This report describes the newly-revised model thermosphere for the Mars Global Reference Atmospheric Model (Mars-GRAM, Version 3.4). It also provides descriptions of other changes made to the program since publication of the programmer's guide for Mars-GRAM Version 3.34. The original Mars-GRAM model thermosphere was based on the global-mean model of Stewart. The revised thermosphere is based largely on parameterizations derived from output data from the three-dimensional Mars Thermospheric Global Circulation Model (MTGCM). The new thermospheric model includes revised dependence on the 10.7 cm solar flux for the global means of exospheric temperature, temperature of the base of the thermosphere, and scale height for the thermospheric temperature variations, as well as revised dependence on orbital position for global mean height of the base of the thermosphere. Other features of the new thermospheric model are: (1) realistic variations of temperature and density with latitude and time of day, (2) more realistic wind magnitudes, based on improved estimates of horizontal pressure gradients, and (3) allowance for user-input adjustments to the model values for mean exospheric temperature and for height and temperature at the base of the thermosphere. Other new features of Mars-GRAM 3.4 include: (1) allowance for user-input values of climatic adjustment factors for temperature profiles from the surface to 75 km, and (2) a revised method for computing the sub-solar longitude position in the 'ORBIT' subroutine. Justus, C. G. and Johnson, D. L. and James, B. F. Marshall Space Flight Center...
Mars International Reference Atmosphere Living With A Star And Fundamental Physics
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Author : L. V. Zasova
language : en
Publisher:
Release Date : 2005
Mars International Reference Atmosphere Living With A Star And Fundamental Physics written by L. V. Zasova and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Mars (Planet) categories.