J
James R. Murphy
Researcher at Ames Research Center
Publications - 115
Citations - 5376
James R. Murphy is an academic researcher from Ames Research Center. The author has contributed to research in topics: Mars Exploration Program & Atmosphere. The author has an hindex of 36, co-authored 114 publications receiving 4842 citations. Previous affiliations of James R. Murphy include New Mexico State University.
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Journal ArticleDOI
The Mars Pathfinder atmospheric structure investigation/meteorology (ASI/MET) experiment
John T. Schofield,Jeffrey R. Barnes,David Crisp,Robert M. Haberle,Søren Ejling Larsen,Julio A. Magalhães,James R. Murphy,Alvin Seiff,Greg W. Wilson +8 more
TL;DR: The Mars Pathfinder atmospheric structure investigation/meteorology (ASI/MET) experiment measured the vertical density, pressure, and temperature structure of the martian atmosphere from the surface to 160 km, and monitored surface meteorology and climate for 83 sols.
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Mars atmospheric dynamics as simulated by the NASA Ames General Circulation Model: 1. The zonal-mean circulation
Robert M. Haberle,James B. Pollack,Jeffrey R. Barnes,Richard W. Zurek,Conway B. Leovy,James R. Murphy,Hilda Lee,J. Schaeffer +7 more
TL;DR: In this article, the characteristics of the zonal-mean circulation and how it responds to seasonal variations and dust loading are described, and the radiative effects of suspended dust particles, even in small amounts, have a major influence on the general circulation.
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The structure of the upper atmosphere of mars: In situ accelerometer measurements from mars global surveyor
G. M. Keating,Stephen W. Bougher,Richard W. Zurek,R. H. Tolson,George J. Cancro,S. N. Noll,J. S. Parker,T. J. Schellenberg,R. W. Shane,B. L. Wilkerson,James R. Murphy,Jeffery L. Hollingsworth,Robert M. Haberle,Manoj Joshi,John C. Pearl,Barney J. Conrath,M. D. Smith,R. T. Clancy,Robert C. Blanchard,R. G. Wilmoth,Didier F. Rault,Torge Martin,D. T. Lyons,Pasquale Esposito,M. D. Johnston,C. W. Whetzel,C. G. Justus,J. M. Babicke +27 more
TL;DR: Throughout the MGS mission, thermospheric density bulges have been detected on opposite sides of the planet near 90 degreesE and 90 degreesW, in the vicinity of maximum terrain heights, suggesting a wave 2 pattern may be caused by topographically-forced planetary waves propagating up from the lower atmosphere.
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General circulation model simulations of the Mars Pathfinder atmospheric structure investigation/meteorology data
Robert M. Haberle,Manoj Joshi,James R. Murphy,Jeffrey R. Barnes,John T. Schofield,Greg W. Wilson,Miguel Lopez-Valverde,Jeffery L. Hollingsworth,Alison F. C. Bridger,James M. Schaeffer +9 more
TL;DR: The NASA Ames Mars General Circulation Model was used to interpret selected results from the Mars Pathfinder atmospheric structure instrument/meteorology (ASI/MET) experiment as discussed by the authors, where the dust observed at the Pathfinder site is assumed to be distributed throughout the lowest five to six scale heights.
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Orbital change experiments with a Mars general circulation model
TL;DR: In this article, the authors used a Mars general circulation model to examine the effect of orbital changes on the planet's general circulation and climate system and found that global mean surface temperatures and pressures decline with increasing obliquity due to the increasing extent of the winter polar caps.