Formulation of an ocean model for global climate simulations
This paper summarizes the formulation of the ocean component to the Geophysical Fluid Dynamics Laboratory's (GFDL) climate model used for the 4th IPCC Assessment (AR4) of global climate change. In particular, it reviews the numerical schemes and physical parameterizations that make up an ocean...
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ftdoajarticles:oai:doaj.org/article:a329161b16824217abe77a7fc1aa2d7c 2023-05-15T15:08:44+02:00 Formulation of an ocean model for global climate simulations S. M. Griffies A. Gnanadesikan K. W. Dixon J. P. Dunne R. Gerdes M. J. Harrison A. Rosati J. L. Russell B. L. Samuels M. J. Spelman M. Winton R. Zhang 2005-01-01T00:00:00Z https://doaj.org/article/a329161b16824217abe77a7fc1aa2d7c EN eng Copernicus Publications http://www.ocean-sci.net/1/45/2005/os-1-45-2005.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 1812-0784 1812-0792 https://doaj.org/article/a329161b16824217abe77a7fc1aa2d7c Ocean Science, Vol 1, Iss 1, Pp 45-79 (2005) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2005 ftdoajarticles 2022-12-31T00:28:18Z This paper summarizes the formulation of the ocean component to the Geophysical Fluid Dynamics Laboratory's (GFDL) climate model used for the 4th IPCC Assessment (AR4) of global climate change. In particular, it reviews the numerical schemes and physical parameterizations that make up an ocean climate model and how these schemes are pieced together for use in a state-of-the-art climate model. Features of the model described here include the following: (1) tripolar grid to resolve the Arctic Ocean without polar filtering, (2) partial bottom step representation of topography to better represent topographically influenced advective and wave processes, (3) more accurate equation of state, (4) three-dimensional flux limited tracer advection to reduce overshoots and undershoots, (5) incorporation of regional climatological variability in shortwave penetration, (6) neutral physics parameterization for representation of the pathways of tracer transport, (7) staggered time stepping for tracer conservation and numerical efficiency, (8) anisotropic horizontal viscosities for representation of equatorial currents, (9) parameterization of exchange with marginal seas, (10) incorporation of a free surface that accomodates a dynamic ice model and wave propagation, (11) transport of water across the ocean free surface to eliminate unphysical ``virtual tracer flux' methods, (12) parameterization of tidal mixing on continental shelves. We also present preliminary analyses of two particularly important sensitivities isolated during the development process, namely the details of how parameterized subgridscale eddies transport momentum and tracers. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 S. M. Griffies A. Gnanadesikan K. W. Dixon J. P. Dunne R. Gerdes M. J. Harrison A. Rosati J. L. Russell B. L. Samuels M. J. Spelman M. Winton R. Zhang Formulation of an ocean model for global climate simulations |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
This paper summarizes the formulation of the ocean component to the Geophysical Fluid Dynamics Laboratory's (GFDL) climate model used for the 4th IPCC Assessment (AR4) of global climate change. In particular, it reviews the numerical schemes and physical parameterizations that make up an ocean climate model and how these schemes are pieced together for use in a state-of-the-art climate model. Features of the model described here include the following: (1) tripolar grid to resolve the Arctic Ocean without polar filtering, (2) partial bottom step representation of topography to better represent topographically influenced advective and wave processes, (3) more accurate equation of state, (4) three-dimensional flux limited tracer advection to reduce overshoots and undershoots, (5) incorporation of regional climatological variability in shortwave penetration, (6) neutral physics parameterization for representation of the pathways of tracer transport, (7) staggered time stepping for tracer conservation and numerical efficiency, (8) anisotropic horizontal viscosities for representation of equatorial currents, (9) parameterization of exchange with marginal seas, (10) incorporation of a free surface that accomodates a dynamic ice model and wave propagation, (11) transport of water across the ocean free surface to eliminate unphysical ``virtual tracer flux' methods, (12) parameterization of tidal mixing on continental shelves. We also present preliminary analyses of two particularly important sensitivities isolated during the development process, namely the details of how parameterized subgridscale eddies transport momentum and tracers. |
format |
Article in Journal/Newspaper |
author |
S. M. Griffies A. Gnanadesikan K. W. Dixon J. P. Dunne R. Gerdes M. J. Harrison A. Rosati J. L. Russell B. L. Samuels M. J. Spelman M. Winton R. Zhang |
author_facet |
S. M. Griffies A. Gnanadesikan K. W. Dixon J. P. Dunne R. Gerdes M. J. Harrison A. Rosati J. L. Russell B. L. Samuels M. J. Spelman M. Winton R. Zhang |
author_sort |
S. M. Griffies |
title |
Formulation of an ocean model for global climate simulations |
title_short |
Formulation of an ocean model for global climate simulations |
title_full |
Formulation of an ocean model for global climate simulations |
title_fullStr |
Formulation of an ocean model for global climate simulations |
title_full_unstemmed |
Formulation of an ocean model for global climate simulations |
title_sort |
formulation of an ocean model for global climate simulations |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doaj.org/article/a329161b16824217abe77a7fc1aa2d7c |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change |
genre_facet |
Arctic Arctic Ocean Climate change |
op_source |
Ocean Science, Vol 1, Iss 1, Pp 45-79 (2005) |
op_relation |
http://www.ocean-sci.net/1/45/2005/os-1-45-2005.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 1812-0784 1812-0792 https://doaj.org/article/a329161b16824217abe77a7fc1aa2d7c |
_version_ |
1766340045591019520 |