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| Titel |
A standard test case suite for two-dimensional linear transport on the sphere: results from a collection of state-of-the-art schemes |
| VerfasserIn |
P. H. Lauritzen, P. A. Ullrich, C. Jablonowski, P. A. Bosler, D. Calhoun, A. J. Conley, T. Enomoto, L. Dong, S. Dubey, O. Guba, A. B. Hansen, E. Kaas, J. Kent, J.-F. Lamarque, M. J. Prather, D. Reinert, V. V. Shashkin, W. C. Skamarock, B. Sørensen, M. A. Taylor, M. A. Tolstykh |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 7, no. 1 ; Nr. 7, no. 1 (2014-01-14), S.105-145 |
| Datensatznummer |
250115533
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| Publikation (Nr.) |
 copernicus.org/gmd-7-105-2014.pdf |
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| Zusammenfassung |
Recently, a standard test case suite for 2-D linear transport on the sphere
was proposed to assess important aspects of accuracy in geophysical fluid
dynamics with a "minimal" set of idealized model
configurations/runs/diagnostics. Here we present results from
19 state-of-the-art transport scheme formulations based on
finite-difference/finite-volume methods as well as emerging (in the context
of atmospheric/oceanographic sciences) Galerkin methods. Discretization grids
range from traditional regular latitude–longitude grids to more isotropic
domain discretizations such as icosahedral and cubed-sphere tessellations of
the sphere. The schemes are evaluated using a wide range of diagnostics in
idealized flow environments. Accuracy is assessed in single- and two-tracer
configurations using conventional error norms as well as novel diagnostics
designed for climate and climate–chemistry applications. In addition,
algorithmic considerations that may be important for computational efficiency
are reported on. The latter is inevitably computing platform dependent.
The ensemble of results from a wide variety of schemes presented here helps
shed light on the ability of the test case suite diagnostics and flow
settings to discriminate between algorithms and provide insights into
accuracy in the context of global atmospheric/ocean modeling. A library of
benchmark results is provided to facilitate scheme intercomparison and model
development. Simple software and data sets are made available to facilitate
the process of model evaluation and scheme intercomparison. |
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