360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model*
The Miami Isopycnic Coordinate Ocean Model configured with 1 � horizontal resolution and 23 layers is used to examine processes that maintain the mesothermal structure, a subsurface temperature inversion, in the subarctic North Pacific. The model successfully reproduces the mesothermal structure con...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.145.957 2023-05-15T18:27:46+02:00 360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model* Takahiro Endoh Shang-ping Xie Bo Qiu The Pennsylvania State University CiteSeerX Archives 2003 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.957 http://iprc.soest.hawaii.edu/~xie/endo2jpo.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.957 http://iprc.soest.hawaii.edu/~xie/endo2jpo.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://iprc.soest.hawaii.edu/~xie/endo2jpo.pdf text 2003 ftciteseerx 2016-01-07T15:08:29Z The Miami Isopycnic Coordinate Ocean Model configured with 1 � horizontal resolution and 23 layers is used to examine processes that maintain the mesothermal structure, a subsurface temperature inversion, in the subarctic North Pacific. The model successfully reproduces the mesothermal structure consisting of a shallow temperature minimum and an underlying temperature maximum that are called the dichothermal and mesothermal waters, respectively. The mesothermal water is formed through cross-gyre exchange between the subtropical and subarctic gyres, whereas the dichothermal water originates from cold and low-salinity waters formed in the winter mixed layer. The horizontal distribution of the passive tracer injected into the subsurface layers south of Japan shows that warm and saline water of the Kuroshio in the density range of 26.8–27.0 � � is the source of the mesothermal water. There are three pathways through which the Kuroshio waters enter the subarctic region. First, the Kuroshio waters that cross the gyre boundary in the western boundary region are carried to the Alaskan gyre by the northern part of the North Pacific Current. Second, the Kuroshio waters carried by the southern part of the North Pacific Current enter the Alaskan gyre through a cross-gyre window in the eastern basin. Third, the Kuroshio waters that diffuse along the isopycnal in the Kuroshio–Oyashio Extension enter the western subarctic gyre. The mesothermal water thus formed in the subarctic region is entrained into the winter mixed layer and returns to the subtropics as surface water by the southward Ekman drift, forming the subpolar cell. 1. Text Subarctic Unknown Oyashio ENVELOPE(157.000,157.000,50.000,50.000) Pacific |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
The Miami Isopycnic Coordinate Ocean Model configured with 1 � horizontal resolution and 23 layers is used to examine processes that maintain the mesothermal structure, a subsurface temperature inversion, in the subarctic North Pacific. The model successfully reproduces the mesothermal structure consisting of a shallow temperature minimum and an underlying temperature maximum that are called the dichothermal and mesothermal waters, respectively. The mesothermal water is formed through cross-gyre exchange between the subtropical and subarctic gyres, whereas the dichothermal water originates from cold and low-salinity waters formed in the winter mixed layer. The horizontal distribution of the passive tracer injected into the subsurface layers south of Japan shows that warm and saline water of the Kuroshio in the density range of 26.8–27.0 � � is the source of the mesothermal water. There are three pathways through which the Kuroshio waters enter the subarctic region. First, the Kuroshio waters that cross the gyre boundary in the western boundary region are carried to the Alaskan gyre by the northern part of the North Pacific Current. Second, the Kuroshio waters carried by the southern part of the North Pacific Current enter the Alaskan gyre through a cross-gyre window in the eastern basin. Third, the Kuroshio waters that diffuse along the isopycnal in the Kuroshio–Oyashio Extension enter the western subarctic gyre. The mesothermal water thus formed in the subarctic region is entrained into the winter mixed layer and returns to the subtropics as surface water by the southward Ekman drift, forming the subpolar cell. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Takahiro Endoh Shang-ping Xie Bo Qiu |
spellingShingle |
Takahiro Endoh Shang-ping Xie Bo Qiu 360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model* |
author_facet |
Takahiro Endoh Shang-ping Xie Bo Qiu |
author_sort |
Takahiro Endoh |
title |
360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model* |
title_short |
360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model* |
title_full |
360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model* |
title_fullStr |
360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model* |
title_full_unstemmed |
360 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 34 Thermohaline Structure in the Subarctic North Pacific Simulated in a General Circulation Model* |
title_sort |
360 journal of physical oceanography volume 34 thermohaline structure in the subarctic north pacific simulated in a general circulation model* |
publishDate |
2003 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.957 http://iprc.soest.hawaii.edu/~xie/endo2jpo.pdf |
long_lat |
ENVELOPE(157.000,157.000,50.000,50.000) |
geographic |
Oyashio Pacific |
geographic_facet |
Oyashio Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
http://iprc.soest.hawaii.edu/~xie/endo2jpo.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.957 http://iprc.soest.hawaii.edu/~xie/endo2jpo.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766209945385041920 |