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| Titel |
On the use of Schwarz–Christoffel conformal mappings to the grid generation for global ocean models |
| VerfasserIn |
S. Xu, B. Wang, J. Liu |
| 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 ; 8, no. 10 ; Nr. 8, no. 10 (2015-10-29), S.3471-3485 |
| Datensatznummer |
250116617
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| Publikation (Nr.) |
 copernicus.org/gmd-8-3471-2015.pdf |
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| Zusammenfassung |
| In this article we propose two grid generation methods for global ocean
general circulation models. Contrary to conventional dipolar or tripolar
grids, the proposed methods are based on Schwarz–Christoffel conformal
mappings that map areas with user-prescribed, irregular boundaries to those
with regular boundaries (i.e., disks, slits, etc.). The first method aims at
improving existing dipolar grids. Compared with existing grids, the sample
grid achieves a better trade-off between the enlargement of the
latitudinal–longitudinal portion and the overall smooth grid cell size
transition. The second method addresses more modern and advanced grid design
requirements arising from high-resolution and multi-scale ocean modeling. The
generated grids could potentially achieve the alignment of grid lines to the
large-scale coastlines, enhanced spatial resolution in coastal regions, and
easier computational load balance. Since the grids are orthogonal
curvilinear, they can be easily utilized by the majority of ocean general
circulation models that are based on finite difference and require grid
orthogonality. The proposed grid generation algorithms can also be applied to
the grid generation for regional ocean modeling where complex land–sea
distribution is present. |
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