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An Intercomparison of the Dynamical Cores of Global Atmospheric Circulation Models for MarsThis is a Final Report for a Joint Research Interchange (JRI) between NASA Ames Research Cen- ter and San Jose State University, Department of Meteorology. The focus of this JRI has been to evaluate the dynamical "cores" of two global atmospheric circulation models for Mars that are in operation at the NASA Ames Research Center. ne two global circulation models in use are fundamentally different: one uses spherical harmonics in its horizontal representation of field variables; the other uses finite differences on a uniform longitude-latitude grid. Several simulations have been conducted to assess how the dynamical processors of each of these circulation models perform using identical "simple physics" parameterizations. A variety of climate statistics (e.g., time-mean flows and eddy fields) have been compared for realistic solstitial mean basic states. Results of this research have demonstrated that the two Mars circulation models with completely different spatial representations and discretizations produce rather similar circulation statistics for first-order meteorological fields, suggestive of a tendency for convergence of numerical solutions. Second and higher-order fields can, however, vary significantly between the two models.
Document ID
19990004122
Acquisition Source
Ames Research Center
Document Type
Contractor or Grantee Report
Authors
Hollingsworth, Jeffery L.
(San Jose State Univ. CA United States)
Bridger, Alison F. C.
(San Jose State Univ. CA United States)
Haberle, Robert M.
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1998
Subject Category
Lunar And Planetary Exploration
Funding Number(s)
CONTRACT_GRANT: NCC2-5171
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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