On the effect of a sill on dense water formation in a marginal sea
Author Posting. © Sears Foundation for Marine Research, 2008. This article is posted here by permission of Sears Foundation for Marine Research for personal use, not for redistribution. The definitive version was published in Journal of Marine Research 66 (2008): 325-345, doi:10.1357/002224008786176...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/2612 2023-05-15T17:24:24+02:00 On the effect of a sill on dense water formation in a marginal sea Iovino, Doroteaciro Straneo, Fiamma Spall, Michael A. 2008-05 application/pdf https://hdl.handle.net/1912/2612 en_US eng Sears Foundation for Marine Research https://doi.org/10.1357/002224008786176016 Journal of Marine Research 66 (2008): 325-345 https://hdl.handle.net/1912/2612 doi:10.1357/002224008786176016 Journal of Marine Research 66 (2008): 325-345 doi:10.1357/002224008786176016 Article 2008 ftwhoas https://doi.org/10.1357/002224008786176016 2022-05-28T22:57:40Z Author Posting. © Sears Foundation for Marine Research, 2008. This article is posted here by permission of Sears Foundation for Marine Research for personal use, not for redistribution. The definitive version was published in Journal of Marine Research 66 (2008): 325-345, doi:10.1357/002224008786176016. The properties of water mass transformation in a semi-enclosed basin, separated from the open ocean by a sill and subject to surface cooling, are analyzed both theoretically and numerically using an ocean general circulation model. This study extends previous studies of convection in a marginal sea to the case with a sill. The sill has a strong impact on both the properties of the dense water formed in the interior and on those of the waters flowing out the marginal sea. It results in a colder interior and colder outflow compared to the case with no sill. Dynamically, this is explained by considering that the sill limits the geostrophic contours over which the open ocean/marginal sea exchange can occur. The impact of the sill, however, is not simply limited to a topographic constriction; instead the sill also decreases the stability of the boundary current, which, in turn, results in relatively large heat flux into the interior and colder outflow. The theories that relate the properties of the dense waters formed in the interior, and those of the outflow, are modified to include the impact of the sill. These are found to compare well with the numerical simulations and provide a useful tool for the interpretation of these results. These idealized simulations capture the basic features of the water mass transformation processes in the Nordic Seas and, in particular, provide a dynamical explanation for the difference between the dense waters formed and the source of the overflows water. DI was supported by the Polar Ocean Climate Processes (ProClim) project funded by the Norwegian Research Council. FS was supported by a visiting scientist fellowship from the Bjerknes Centre for Climate Research (Bergen, Norway) ... Article in Journal/Newspaper Nordic Seas Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Bergen Norway Journal of Marine Research 66 3 325 345 |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
description |
Author Posting. © Sears Foundation for Marine Research, 2008. This article is posted here by permission of Sears Foundation for Marine Research for personal use, not for redistribution. The definitive version was published in Journal of Marine Research 66 (2008): 325-345, doi:10.1357/002224008786176016. The properties of water mass transformation in a semi-enclosed basin, separated from the open ocean by a sill and subject to surface cooling, are analyzed both theoretically and numerically using an ocean general circulation model. This study extends previous studies of convection in a marginal sea to the case with a sill. The sill has a strong impact on both the properties of the dense water formed in the interior and on those of the waters flowing out the marginal sea. It results in a colder interior and colder outflow compared to the case with no sill. Dynamically, this is explained by considering that the sill limits the geostrophic contours over which the open ocean/marginal sea exchange can occur. The impact of the sill, however, is not simply limited to a topographic constriction; instead the sill also decreases the stability of the boundary current, which, in turn, results in relatively large heat flux into the interior and colder outflow. The theories that relate the properties of the dense waters formed in the interior, and those of the outflow, are modified to include the impact of the sill. These are found to compare well with the numerical simulations and provide a useful tool for the interpretation of these results. These idealized simulations capture the basic features of the water mass transformation processes in the Nordic Seas and, in particular, provide a dynamical explanation for the difference between the dense waters formed and the source of the overflows water. DI was supported by the Polar Ocean Climate Processes (ProClim) project funded by the Norwegian Research Council. FS was supported by a visiting scientist fellowship from the Bjerknes Centre for Climate Research (Bergen, Norway) ... |
format |
Article in Journal/Newspaper |
author |
Iovino, Doroteaciro Straneo, Fiamma Spall, Michael A. |
spellingShingle |
Iovino, Doroteaciro Straneo, Fiamma Spall, Michael A. On the effect of a sill on dense water formation in a marginal sea |
author_facet |
Iovino, Doroteaciro Straneo, Fiamma Spall, Michael A. |
author_sort |
Iovino, Doroteaciro |
title |
On the effect of a sill on dense water formation in a marginal sea |
title_short |
On the effect of a sill on dense water formation in a marginal sea |
title_full |
On the effect of a sill on dense water formation in a marginal sea |
title_fullStr |
On the effect of a sill on dense water formation in a marginal sea |
title_full_unstemmed |
On the effect of a sill on dense water formation in a marginal sea |
title_sort |
on the effect of a sill on dense water formation in a marginal sea |
publisher |
Sears Foundation for Marine Research |
publishDate |
2008 |
url |
https://hdl.handle.net/1912/2612 |
geographic |
Bergen Norway |
geographic_facet |
Bergen Norway |
genre |
Nordic Seas |
genre_facet |
Nordic Seas |
op_source |
Journal of Marine Research 66 (2008): 325-345 doi:10.1357/002224008786176016 |
op_relation |
https://doi.org/10.1357/002224008786176016 Journal of Marine Research 66 (2008): 325-345 https://hdl.handle.net/1912/2612 doi:10.1357/002224008786176016 |
op_doi |
https://doi.org/10.1357/002224008786176016 |
container_title |
Journal of Marine Research |
container_volume |
66 |
container_issue |
3 |
container_start_page |
325 |
op_container_end_page |
345 |
_version_ |
1766115390284365824 |