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Stationary Planetary Waves in Northern Late Winter: MRO/MARCI Observations and Mars Climate Model SimulationsMars reveals similar, yet also rather different, atmospheric circulation patterns compared to those on Earth. In both atmospheres, solar differential heating drives global Hadley circulation cells. However during solstice on Mars, its Hadley cells are hemispherically asymmetric: an intense, deep, cross-hemisphere single cell dominates with rising motion in the summer hemisphere and sinking motion in the winter hemisphere. Both planets also exhibit thermally indirect (i.e., eddy-driven) Ferrel circulation cells in middle and high latitudes. In addition, Earth and Mars exhibit distinctive large-scale orography and, in a broadly defined context, continentality. For Mars’ northern midlatitudes, Tharsis in the western hemisphere, and Arabia Terra and Elysium in the eastern hemisphere, are the primary large-scale topographic features. In the southern-midlatitudes, Tharsis and Argyre in the western hemisphere, and Hellas in the eastern hemisphere are the key topographic features which can influence large-scale circulation patterns. Such underlying orographic complexes not only cause significant latitudinal excursions of the seasonal mean westerly circumnavigating polar vortex but also significantly modulate the intensity and preferred geographic regions of traveling baroclinic weather systems.
Document ID
20190001069
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Hollingsworth, J. L. (NASA Ames Research Center Moffett Field, CA, United States)
Kahre, M. A. (NASA Ames Research Center Moffett Field, CA, United States)
Wolff, M. J. (Space Science Inst. Baltimore, MD, United States)
Haberle, R. M. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
March 1, 2019
Publication Date
July 15, 2014
Subject Category
Astronomy
Report/Patent Number
ARC-E-DAA-TN15068
Meeting Information
Meeting: International Conference on Mars
Location: Pasadena, CA
Country: United States
Start Date: July 14, 2014
End Date: July 18, 2014
Sponsors: Lunar and Planetary Institute
Funding Number(s)
WBS: WBS 203959.02.02.20.39
Distribution Limits
Public
Copyright
Public Use Permitted.

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