A standard test case suite for two-dimensional linear transport on the sphere: results from a collection of state-of-the-art schemes

• DOI: 10.5194/gmdd-6-4983-2013
• Publication Date: 2013-09-23T15:45:19Z
• Authors: 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
• Keywords: Benchmark (surveying)

Abstract. 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 "minimal" set idealized model configurations/runs/diagnostics. Here we present results from 19 state-of-the-art scheme formulations based finite-difference/finite-volume methods as well emerging (in context atmospheric/oceanographic sciences) Galerkin methods. Discretization grids range traditional regular latitude-longitude more isotropic domain discretizations such icosahedral and cubed-sphere tessellations sphere. The schemes are evaluated using wide diagnostics flow environments. Accuracy is assessed single- two-tracer configurations conventional error norms novel designed climate climate-chemistry applications. In addition, algorithmic considerations that may be computational efficiency reported on. latter inevitably computing platform dependent, ensemble variety presented here helps shed light ability settings discriminate between algorithms provide insights into global atmospheric/ocean modeling. A library benchmark provided facilitate intercomparison development. Simple software data-sets made available process evaluation intercomparison.