A reduced gravity, primitive equation model of the upper equatorial ocean
type: Item
instance of: scholarly article
title: A reduced gravity, primitive equation model of the upper equatorial ocean
zbMATH Open document ID: 0663.76125
DOI: 10.1016/0021-9991(89)90216-7
author: Peter R. Gent
author: Mark A. Cane
published in: Journal of Computational Physics
publication date: 1989-01-01T00:00:00Z
review text: This paper describes a fourth-order finite difference model of the equatorial ocean that is designed to study dynamic and thermodynamic processes on time scales of a decade or less. It is a primitive equation model employing the reduced gravity assumption so that the deep ocean is at rest below the active upper ocean. The model consists of a surface mixed layer and an active layer below, which is divided into an arbitrary number of numerical layers by means of a sigma coordinate. The model can be used in an unstratified version, when temperature acts as a passive tracer, as well as in the full stratified version. The numerical formulation of the model is described in detail. Experiments comparing three different horizontal smoothers: Shapiro filter, Laplacian friction, and biharmonic friction are presented. It is concluded that, at the level needed to maintain computational stability, the Shapiro filter damps the fields least; in addition, it is faster and easier to implement when the horizontal finite difference grid is stretched.
Mathematics Subject Classification ID: 76U05
Mathematics Subject Classification ID: 86A05
zbMATH DE Number: 4085326
zbMATH Keywords: El Niño-southern oscillation
zbMATH Keywords: fourth-order finite difference model
zbMATH Keywords: equatorial ocean
zbMATH Keywords: thermodynamic processes
zbMATH Keywords: surface mixed layer
zbMATH Keywords: horizontal smoothers
zbMATH Keywords: Shapiro
zbMATH Keywords: Laplacian friction
zbMATH Keywords: biharmonic friction
zbMATH Keywords: computational stability
MaRDI profile type: Publication
full work available at URL: 0021-9991(89)90216-7
OpenAlex ID: W2081105432
cites work: On the use of a scale-dependent filter in channel model integrations
description: scientific article; zbMATH DE number 4085326