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CAM-EULAG: A Non-Hydrostatic Atmospheric Climate Model with Grid Stretching
Acta Geophysica
  • Babutunde J. Abiodun, University of Cape Town
  • William Gutowski, Iowa State University
  • Abayomi Abatan, Iowa State University
  • Joseph Prusa, Teraflux Corporation
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This study evaluates the capability of a non-hydrostatic global climate model with grid stretching (CEU) that uses NCAR Community Atmospheric Model (CAM) physics and EULAG dynamics. We compare CEU rainfall with that produced by CAM using finite volume dynamics (CFV). Both models simulated climate from 1996 to 2000, using the same parameterization schemes. CEU and CFV both simulate well the observed global rainfall pattern. However, with same grid, CEU performs better than CFV in simulating the annual cycles of precipitation over our target region of West Africa. The reason is that it simulates African easterly jet and monsoon circulations better than CFV. CEU simulations with horizontal grid stretching to 0.5° are markedly better than those using CAM’s standard 2.0°×2.5° grid.

This article is from Acta Geophysica 59 (2016): 1158-1167, doi:10.2478/s11600-011-0032-2. Posted with permission.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. (CC BY-NC-ND 3.0)
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Institute for Geophysics, Polish Academy of Sciences
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Babutunde J. Abiodun, William Gutowski, Abayomi Abatan and Joseph Prusa. "CAM-EULAG: A Non-Hydrostatic Atmospheric Climate Model with Grid Stretching" Acta Geophysica Vol. 59 Iss. 6 (2011) p. 1158 - 1167
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