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Pole relocation for an orthogonal grid: An analytic method


Roberts, JL and Heil, P and Murray, RJ and Holloway, DS and Bindoff, NL, Pole relocation for an orthogonal grid: An analytic method, Ocean Modelling, 12, (1-2) pp. 16-31. ISSN 1463-5003 (2006) [Refereed Article]

DOI: doi:10.1016/j.ocemod.2005.03.004


Oceanic general circulation models, especially for climate applications, lack computational efficiency and accuracy when solved on horizontal grids that contain a singularity, i.e. a grid pole, within the ocean mask of the computational domain. Here we present a fully analytical approach of generating a curvilinear, globally orthogonal grid, where the grid poles are located outside the ocean's computational domain, and the grid parallels in the vicinity of the geographic Equator are parallel to the latter. The grid is dipolar, asymmetric and composite with a smooth transition. In this grid all ocean basins are connected and straits are open in the same manner as on the geographical grid. The grid generation is based on grid parallels which are circles and the analytical determination of grid meridians which are orthogonal to them. Grid-cell anisotropy and grid resolution are determined from analytical functions, and may be varied to suit scientific goals. © 2005 Elsevier Ltd. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Palaeoclimatology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the mathematical sciences
UTAS Author:Roberts, JL (Dr Jason Roberts)
UTAS Author:Murray, RJ (Mr Ross Murray)
UTAS Author:Holloway, DS (Associate Professor Damien Holloway)
UTAS Author:Bindoff, NL (Professor Nathan Bindoff)
ID Code:43099
Year Published:2006
Funding Support:Australian Research Council (DP0450225)
Web of Science® Times Cited:5
Deposited By:Mathematics
Deposited On:2006-08-01
Last Modified:2007-03-14

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