A process-oriented modelling study of the coastal Canary and Iberian Current system
In a hierarchy of increasing complexity of physical forcing mechanisms, we conduct a process-oriented study of the Northern Canary Current System (NCCS) with a terrain-following numerical ocean model (in this case the Princeton Ocean Model, POM) to investigate the forcing mechanisms for the classica...
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ftnavalpschool:oai:calhoun.nps.edu:10945/43388 2024-06-09T07:48:19+00:00 A process-oriented modelling study of the coastal Canary and Iberian Current system Batteen, Mary L. Martinho, Antonio S. Miller, Henry A. McClean, Julie L. Oceanography 2007 application/pdf https://hdl.handle.net/10945/43388 unknown Ocean Modelling, Volume 18, (2007) pp. 1–36 https://hdl.handle.net/10945/43388 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. Coastal circulation Eastern boundary currents Numerical modeling Canary current Princeton ocean model POM Parallel ocean program POP Article 2007 ftnavalpschool 2024-05-15T00:42:55Z In a hierarchy of increasing complexity of physical forcing mechanisms, we conduct a process-oriented study of the Northern Canary Current System (NCCS) with a terrain-following numerical ocean model (in this case the Princeton Ocean Model, POM) to investigate the forcing mechanisms for the classical as well as unique features of the NCCS. While most of the NCCS features are realistically simulated, a key comparison of the results shows that unexpectedly a realistic subsurface mesoscale feature is simulated in a flat bottom NCCS model but not in the same model with bottom topography. We then show that this is a consequence of a numerical choice, which leads to the use of an improved technique to smooth the bottom topography, which better preserves the raw topography and subsequently is shown to produce the subsurface feature. This choice is then used in the final and most realistic of the NCCS experiments, in which a high temporal resolution study is conducted from March to September 1996 for the NCCS coastal ocean domain using daily winds and thermohaline forcing initialized on 2 March 1996 from a one-way coupled North Atlantic Parallel Ocean Program (POP) model updated at the lateral boundaries of the POM model every three days. A key physical result is that a dynamic flow consistent with the Azores Current is produced in this experiment, a feature not produced in the other experiments which used climatological data at the open boundaries. The results of these process-oriented experiments emphasize that numerical models of ocean circulation require important choices, which are both numerical and physical. Article in Journal/Newspaper North Atlantic Naval Postgraduate School: Calhoun |
institution |
Open Polar |
collection |
Naval Postgraduate School: Calhoun |
op_collection_id |
ftnavalpschool |
language |
unknown |
topic |
Coastal circulation Eastern boundary currents Numerical modeling Canary current Princeton ocean model POM Parallel ocean program POP |
spellingShingle |
Coastal circulation Eastern boundary currents Numerical modeling Canary current Princeton ocean model POM Parallel ocean program POP Batteen, Mary L. Martinho, Antonio S. Miller, Henry A. McClean, Julie L. A process-oriented modelling study of the coastal Canary and Iberian Current system |
topic_facet |
Coastal circulation Eastern boundary currents Numerical modeling Canary current Princeton ocean model POM Parallel ocean program POP |
description |
In a hierarchy of increasing complexity of physical forcing mechanisms, we conduct a process-oriented study of the Northern Canary Current System (NCCS) with a terrain-following numerical ocean model (in this case the Princeton Ocean Model, POM) to investigate the forcing mechanisms for the classical as well as unique features of the NCCS. While most of the NCCS features are realistically simulated, a key comparison of the results shows that unexpectedly a realistic subsurface mesoscale feature is simulated in a flat bottom NCCS model but not in the same model with bottom topography. We then show that this is a consequence of a numerical choice, which leads to the use of an improved technique to smooth the bottom topography, which better preserves the raw topography and subsequently is shown to produce the subsurface feature. This choice is then used in the final and most realistic of the NCCS experiments, in which a high temporal resolution study is conducted from March to September 1996 for the NCCS coastal ocean domain using daily winds and thermohaline forcing initialized on 2 March 1996 from a one-way coupled North Atlantic Parallel Ocean Program (POP) model updated at the lateral boundaries of the POM model every three days. A key physical result is that a dynamic flow consistent with the Azores Current is produced in this experiment, a feature not produced in the other experiments which used climatological data at the open boundaries. The results of these process-oriented experiments emphasize that numerical models of ocean circulation require important choices, which are both numerical and physical. |
author2 |
Oceanography |
format |
Article in Journal/Newspaper |
author |
Batteen, Mary L. Martinho, Antonio S. Miller, Henry A. McClean, Julie L. |
author_facet |
Batteen, Mary L. Martinho, Antonio S. Miller, Henry A. McClean, Julie L. |
author_sort |
Batteen, Mary L. |
title |
A process-oriented modelling study of the coastal Canary and Iberian Current system |
title_short |
A process-oriented modelling study of the coastal Canary and Iberian Current system |
title_full |
A process-oriented modelling study of the coastal Canary and Iberian Current system |
title_fullStr |
A process-oriented modelling study of the coastal Canary and Iberian Current system |
title_full_unstemmed |
A process-oriented modelling study of the coastal Canary and Iberian Current system |
title_sort |
process-oriented modelling study of the coastal canary and iberian current system |
publishDate |
2007 |
url |
https://hdl.handle.net/10945/43388 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Ocean Modelling, Volume 18, (2007) pp. 1–36 https://hdl.handle.net/10945/43388 |
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_ |
1801379985913544704 |