Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds
Results are presented from a high‐resolution global ocean model that is driven through three decadal cycles of increasingly realistic prescribed atmospheric forcing from the period 1985–1995. The model used (the Parallel Ocean Program) is a z level primitive equation model with active thermohaline d...
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American Geophysical Union
1998
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ftnavalpschool:oai:calhoun.nps.edu:10945/62158 2024-06-09T07:40:12+00:00 Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds Maltrud, Mathew E. Smith, Richard D. Semtner, Albert J. Malone, Robert C. Naval Postgraduate School (U.S.) Oceanography 1998-12 29 p. application/pdf https://hdl.handle.net/10945/62158 unknown American Geophysical Union Maltrud, Mathew E., et al. "Global eddy‐resolving ocean simulations driven by 1985–1995 atmospheric winds." Journal of Geophysical Research: Oceans 103.C13 (1998): 30825-30853. https://hdl.handle.net/10945/62158 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. Article 1998 ftnavalpschool 2024-05-15T00:19:57Z Results are presented from a high‐resolution global ocean model that is driven through three decadal cycles of increasingly realistic prescribed atmospheric forcing from the period 1985–1995. The model used (the Parallel Ocean Program) is a z level primitive equation model with active thermohaline dynamics based on the formulation of Bryan [1969] rewritten for massively parallel computers. Improvements to the model include an implicit free‐surface formulation of the barotropic mode [Dukowicz and Smith, 1994] and the use of pressure averaging for increasing the numerical time step. This study extends earlier 0.5° simulations of Semtner and Chervin [1992] to higher horizontal resolution with improved treatments of ocean geometry and surface forcing. The computational grid is a Mercator projection covering the global ocean from 77°N to 77°S and has 20 vertical levels. Three successive simulations have been performed on the CM‐5 Connection Machine system at Los Alamos using forcing fields from the European Centre for Medium‐Range Weather Forecasts (ECMWF). The first run uses monthly wind stresses for 1985–1995 and restoring of surface temperature and salinity to the Levitus [1982] seasonal climatology. The second run is the same but with 3 day‐averaged rather than monthly averaged wind stress fields, and the third is the same as the second but uses the monthly climatological ECMWF heat fluxes of Barnier et al. [1995] instead of restoring to climatological sea surface temperatures. Many features of the wind‐driven circulation are well represented in the model solutions, such as the overall current patterns, the numerous regions of hydrodynamic instability which correspond to those observed by satellite altimetry, and the filamented structure of the Antarctic Circumpolar Current. However, some features such as the separation points of the Gulf Stream and Kuroshio and the transport through narrow passages such as the Florida Straits are clearly inaccurate and indicate that still higher resolution may be required to ... Article in Journal/Newspaper Antarc* Antarctic Naval Postgraduate School: Calhoun Antarctic The Antarctic |
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Open Polar |
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Naval Postgraduate School: Calhoun |
op_collection_id |
ftnavalpschool |
language |
unknown |
description |
Results are presented from a high‐resolution global ocean model that is driven through three decadal cycles of increasingly realistic prescribed atmospheric forcing from the period 1985–1995. The model used (the Parallel Ocean Program) is a z level primitive equation model with active thermohaline dynamics based on the formulation of Bryan [1969] rewritten for massively parallel computers. Improvements to the model include an implicit free‐surface formulation of the barotropic mode [Dukowicz and Smith, 1994] and the use of pressure averaging for increasing the numerical time step. This study extends earlier 0.5° simulations of Semtner and Chervin [1992] to higher horizontal resolution with improved treatments of ocean geometry and surface forcing. The computational grid is a Mercator projection covering the global ocean from 77°N to 77°S and has 20 vertical levels. Three successive simulations have been performed on the CM‐5 Connection Machine system at Los Alamos using forcing fields from the European Centre for Medium‐Range Weather Forecasts (ECMWF). The first run uses monthly wind stresses for 1985–1995 and restoring of surface temperature and salinity to the Levitus [1982] seasonal climatology. The second run is the same but with 3 day‐averaged rather than monthly averaged wind stress fields, and the third is the same as the second but uses the monthly climatological ECMWF heat fluxes of Barnier et al. [1995] instead of restoring to climatological sea surface temperatures. Many features of the wind‐driven circulation are well represented in the model solutions, such as the overall current patterns, the numerous regions of hydrodynamic instability which correspond to those observed by satellite altimetry, and the filamented structure of the Antarctic Circumpolar Current. However, some features such as the separation points of the Gulf Stream and Kuroshio and the transport through narrow passages such as the Florida Straits are clearly inaccurate and indicate that still higher resolution may be required to ... |
author2 |
Naval Postgraduate School (U.S.) Oceanography |
format |
Article in Journal/Newspaper |
author |
Maltrud, Mathew E. Smith, Richard D. Semtner, Albert J. Malone, Robert C. |
spellingShingle |
Maltrud, Mathew E. Smith, Richard D. Semtner, Albert J. Malone, Robert C. Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds |
author_facet |
Maltrud, Mathew E. Smith, Richard D. Semtner, Albert J. Malone, Robert C. |
author_sort |
Maltrud, Mathew E. |
title |
Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds |
title_short |
Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds |
title_full |
Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds |
title_fullStr |
Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds |
title_full_unstemmed |
Global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds |
title_sort |
global eddy-resolving ocean simulations driven by 1985-1995 atmospheric winds |
publisher |
American Geophysical Union |
publishDate |
1998 |
url |
https://hdl.handle.net/10945/62158 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Maltrud, Mathew E., et al. "Global eddy‐resolving ocean simulations driven by 1985–1995 atmospheric winds." Journal of Geophysical Research: Oceans 103.C13 (1998): 30825-30853. https://hdl.handle.net/10945/62158 |
op_rights |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
_version_ |
1801383654986874880 |