North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations
We evaluate the mean circulation patterns, water mass distributions, and tropical dynamics of the North and Equatorial Pacific Ocean based on a suite of global ocean-sea ice simulations driven by the CORE-II atmospheric forcing from 1963-2007. The first three moments (mean, standard deviation and sk...
Published in: | Ocean Modelling |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier Ltd.
2016
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-023-164 https://doi.org/10.1016/j.ocemod.2016.06.003 |
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ftncar:oai:drupal-site.org:articles_18693 2023-09-05T13:23:07+02:00 North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations Tseng, Yuheng (author) Lin, Hongyang (author) Chen, Han-Ching (author) Thompson, Keith (author) Bentsen, Mats (author) Boning, Klaus (author) Bozec, Alexandra (author) Cassou, Christophe (author) Chassignet, Eric (author) Chow, Chun Hoe (author) Danabasoglu, Gokhan (author) Danilov, Sergey (author) Farneti, Riccardo (author) Fogli, Pier (author) Fujii, Yosuke (author) Griffies, Stephen (author) Ilicak, Mehmet (author) Jung, Thomas (author) Masina, Simona (author) Navarra, Antonio (author) Patara, Lavinia (author) Samuels, Bonita (author) Scheinert, Markus (author) Sidorenko, Dmitry (author) Sui, Chung-Hsiung (author) Tsujino, Hiroyuki (author) Valcke, Sophie (author) Voldoire, Aurore (author) Wang, Qiang (author) Yeager, Stephen (author) 2016-08-01 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-023-164 https://doi.org/10.1016/j.ocemod.2016.06.003 en eng Elsevier Ltd. Ocean Modelling articles:18693 ark:/85065/d77d2ws8 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-023-164 doi:10.1016/j.ocemod.2016.06.003 Copyright 2016 Elsevier. Text article 2016 ftncar https://doi.org/10.1016/j.ocemod.2016.06.003 2023-08-14T18:43:09Z We evaluate the mean circulation patterns, water mass distributions, and tropical dynamics of the North and Equatorial Pacific Ocean based on a suite of global ocean-sea ice simulations driven by the CORE-II atmospheric forcing from 1963-2007. The first three moments (mean, standard deviation and skewness) of sea surface height and surface temperature variability are assessed against observations. Large discrepancies are found in the variance and skewness of sea surface height and in the skewness of sea surface temperature. Comparing with the observation, most models underestimate the Kuroshio transport in the Asian Marginal seas due to the missing influence of the unresolved western boundary current and meso-scale eddies. In terms of the Mixed Layer Depths (MLDs) in the North Pacific, the two observed maxima associated with Subtropical Mode Water and Central Mode Water formation coalesce into a large pool of deep MLDs in all participating models, but another local maximum associated with the formation of Eastern Subtropical Mode Water can be found in all models with different magnitudes. The main model bias of deep MLDs results from excessive Subtropical Mode Water formation due to inaccurate representation of the Kuroshio separation and of the associated excessively warm and salty Kuroshio water. Further water mass analysis shows that the North Pacific Intermediate Water can penetrate southward in most models, but its distribution greatly varies among models depending not only on grid resolution and vertical coordinate but also on the model dynamics. All simulations show overall similar large scale tropical current system, but with differences in the structures of the Equatorial Undercurrent. We also confirm the key role of the meridional gradient of the wind stress curl in driving the equatorial transport, leading to a generally weak North Equatorial Counter Current in all models due to inaccurate CORE-II equatorial wind fields. Most models show a larger interior transport of Pacific subtropical cells than ... Article in Journal/Newspaper Sea ice OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Pacific Ocean Modelling 104 143 170 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
We evaluate the mean circulation patterns, water mass distributions, and tropical dynamics of the North and Equatorial Pacific Ocean based on a suite of global ocean-sea ice simulations driven by the CORE-II atmospheric forcing from 1963-2007. The first three moments (mean, standard deviation and skewness) of sea surface height and surface temperature variability are assessed against observations. Large discrepancies are found in the variance and skewness of sea surface height and in the skewness of sea surface temperature. Comparing with the observation, most models underestimate the Kuroshio transport in the Asian Marginal seas due to the missing influence of the unresolved western boundary current and meso-scale eddies. In terms of the Mixed Layer Depths (MLDs) in the North Pacific, the two observed maxima associated with Subtropical Mode Water and Central Mode Water formation coalesce into a large pool of deep MLDs in all participating models, but another local maximum associated with the formation of Eastern Subtropical Mode Water can be found in all models with different magnitudes. The main model bias of deep MLDs results from excessive Subtropical Mode Water formation due to inaccurate representation of the Kuroshio separation and of the associated excessively warm and salty Kuroshio water. Further water mass analysis shows that the North Pacific Intermediate Water can penetrate southward in most models, but its distribution greatly varies among models depending not only on grid resolution and vertical coordinate but also on the model dynamics. All simulations show overall similar large scale tropical current system, but with differences in the structures of the Equatorial Undercurrent. We also confirm the key role of the meridional gradient of the wind stress curl in driving the equatorial transport, leading to a generally weak North Equatorial Counter Current in all models due to inaccurate CORE-II equatorial wind fields. Most models show a larger interior transport of Pacific subtropical cells than ... |
author2 |
Tseng, Yuheng (author) Lin, Hongyang (author) Chen, Han-Ching (author) Thompson, Keith (author) Bentsen, Mats (author) Boning, Klaus (author) Bozec, Alexandra (author) Cassou, Christophe (author) Chassignet, Eric (author) Chow, Chun Hoe (author) Danabasoglu, Gokhan (author) Danilov, Sergey (author) Farneti, Riccardo (author) Fogli, Pier (author) Fujii, Yosuke (author) Griffies, Stephen (author) Ilicak, Mehmet (author) Jung, Thomas (author) Masina, Simona (author) Navarra, Antonio (author) Patara, Lavinia (author) Samuels, Bonita (author) Scheinert, Markus (author) Sidorenko, Dmitry (author) Sui, Chung-Hsiung (author) Tsujino, Hiroyuki (author) Valcke, Sophie (author) Voldoire, Aurore (author) Wang, Qiang (author) Yeager, Stephen (author) |
format |
Article in Journal/Newspaper |
title |
North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations |
spellingShingle |
North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations |
title_short |
North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations |
title_full |
North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations |
title_fullStr |
North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations |
title_full_unstemmed |
North and equatorial Pacific Ocean circulation in the CORE-II hindcast simulations |
title_sort |
north and equatorial pacific ocean circulation in the core-ii hindcast simulations |
publisher |
Elsevier Ltd. |
publishDate |
2016 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-023-164 https://doi.org/10.1016/j.ocemod.2016.06.003 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Curl Pacific |
geographic_facet |
Curl Pacific |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
Ocean Modelling articles:18693 ark:/85065/d77d2ws8 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-023-164 doi:10.1016/j.ocemod.2016.06.003 |
op_rights |
Copyright 2016 Elsevier. |
op_doi |
https://doi.org/10.1016/j.ocemod.2016.06.003 |
container_title |
Ocean Modelling |
container_volume |
104 |
container_start_page |
143 |
op_container_end_page |
170 |
_version_ |
1776203692398084096 |