Statistics – Computation
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ames.reptu....h&link_type=abstract
Technical Report, NASA Ames Research Center Moffett Field, CA United States
Statistics
Computation
Atmospheric Circulation, Atmospheric Models, Climate, Meteorological Parameters, Meteorology, Spherical Harmonics, Computational Grids, Convergence, Cores, Latitude, Longitude, Numerical Analysis, Parameterization, Vortices
Scientific paper
This is a Final Report for a Joint Research Interchange (JRI) between NASA Ames Research Center 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. The 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.
Bridger Alison F. C.
Haberle Robert M.
Hollingsworth Jeffery L.
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