PROPERTIES OF NONUNIFORM GRIDS USED IN OCEAN GENERAL-CIRCULATION MODELS

Authors
TREGUIER AM DUKOWICZ JK BRYAN K
Citation
Am. Treguier et al., PROPERTIES OF NONUNIFORM GRIDS USED IN OCEAN GENERAL-CIRCULATION MODELS, J GEO RES-O, 101(C9), 1996, pp. 20877-20881
Citations number
8
Categorie Soggetti
Oceanografhy
Journal title
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN journal
21699275 → ACNP
Volume
101
Issue
C9
Year of publication
1996
Pages
20877 - 20881
Database
ISI
SICI code
2169-9275(1996)101:C9<20877:PONGUI>2.0.ZU;2-S
Abstract
Ocean general circulation models frequently use nonuniform grids, espe cially in the vertical direction. This paper clarifies the implication s of using such grids on the consistency and accuracy of numerical sch emes. It is emphasized that numerical schemes maintain their order of accuracy on a nonuniform grid provided the grid can be related to a sm ooth mapping. Additional metric terms appear in the truncation error, which should not be interpreted simply as a numerical diffusion.