A method for preserving large-scale flow patterns in low-resolution ocean simulations
File(s)
Accepted version
Author(s)
Shevchenko, I
Berloff, P
Type
Journal Article
Abstract
It is typical for low-resolution simulations of the ocean to miss not only small- but also large-scale patterns of the flow dynamics compared with their high-resolution analogues. It is usually attributed to the inability of coarse-grid models to properly reproduce the effects of the unresolved small-scale dynamics on the resolved large scales. In part, the reason for that is that coarse-grid models fail to at least keep the coarse-grid solution within the region of phase space occupied by the true solution (the high-resolution solution projected onto the coarse grid). In this paper we offer a solution to this problem by computing the image point in the phase space restricted to the region of the true flow dynamics. The proposed method shows encouraging results for both low- and high-dimensional phase spaces, it takes a near-zero effort to implement into existing numerical codes and has ample room for further improvements.
Date Issued
2021-05-01
Date Acceptance
2021-03-16
Citation
Ocean Modelling, 2021, 161, pp.1-6
ISSN
1463-5003
Publisher
Elsevier BV
Start Page
1
End Page
6
Journal / Book Title
Ocean Modelling
Volume
161
Copyright Statement
Crown Copyright © 2021 Published by Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Natural Environment Research Council (NERC)
The Leverhulme Trust
Natural Environment Research Council (NERC)
Natural Environment Research Council (NERC)
Identifier
https://www.sciencedirect.com/science/article/pii/S1463500321000457?via%3Dihub
Grant Number
NE/R011567/1
RPG-2019-024
NE/T002220/1
EP/V520354/1
Subjects
0405 Oceanography
0911 Maritime Engineering
Oceanography
Publication Status
Published
Article Number
ARTN 101795
Date Publish Online
2021-03-26