Variation of the southward interior flow of the North Pacific subtropical gyre, as revealed by a repeat hydrographic survey

Akira Nagano; Hiroshi Ichikawa; Yasushi Yoshikawa; Shoichi Kizu; Kimio Hanawa

doi:10.1007/s10872-012-0102-3

Variation of the southward interior flow of the North Pacific subtropical gyre, as revealed by a repeat hydrographic survey

Akira Nagano, Hiroshi Ichikawa, Yasushi Yoshikawa, Shoichi Kizu, Kimio Hanawa

SCI - Geophysics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Baroclinic variations of the southward flow in the interior region of the North Pacific subtropical gyre are presented with five hydrographic sections from San Francisco to near Japan during 2004-2006. The volume transport averaged temperature of the interior flow, which varies vigorously by a maximum of 0. 8°C, is negatively correlated with the transport in the layer of density 24. 5-26. 5σ _θ, associated with changes in the vertical current structure. Transport variation in this density layer is thus mainly responsible for the thermal impact of the interior flow on the heat transport of the subtropical gyre.

Original language	English
Pages (from-to)	361-368
Number of pages	8
Journal	Journal of Oceanography
Volume	68
Issue number	2
DOIs	https://doi.org/10.1007/s10872-012-0102-3
Publication status	Published - 2012 Apr

Keywords

Interior region
North Pacific
Subtropical gyre
Volume transport
Volume transport averaged temperature

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10.1007/s10872-012-0102-3

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title = "Variation of the southward interior flow of the North Pacific subtropical gyre, as revealed by a repeat hydrographic survey",

abstract = "Baroclinic variations of the southward flow in the interior region of the North Pacific subtropical gyre are presented with five hydrographic sections from San Francisco to near Japan during 2004-2006. The volume transport averaged temperature of the interior flow, which varies vigorously by a maximum of 0. 8°C, is negatively correlated with the transport in the layer of density 24. 5-26. 5σ θ, associated with changes in the vertical current structure. Transport variation in this density layer is thus mainly responsible for the thermal impact of the interior flow on the heat transport of the subtropical gyre.",

keywords = "Interior region, North Pacific, Subtropical gyre, Volume transport, Volume transport averaged temperature",

author = "Akira Nagano and Hiroshi Ichikawa and Yasushi Yoshikawa and Shoichi Kizu and Kimio Hanawa",

note = "Funding Information: Acknowledgments This study was carried out as a part of the Japan–Hawaii Monitoring Program (JAHMP). The authors would like to thank the captain and crew of the T/V Miyagi-maru (Miyagi Prefectural Board of Education) for obtaining the XBT/XCTD data, and we also extend our appreciation to the Scripps High Resolution XBT/ XCTD (HRX) program and the Japan Argo team, who made data available from their websites. We also thank the editors (Drs. T. Hibiya and T. Suga) and anonymous reviewers for their helpful comments.",

year = "2012",

month = apr,

doi = "10.1007/s10872-012-0102-3",

language = "English",

volume = "68",

pages = "361--368",

journal = "Journal of Oceanography",

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T1 - Variation of the southward interior flow of the North Pacific subtropical gyre, as revealed by a repeat hydrographic survey

AU - Nagano, Akira

AU - Ichikawa, Hiroshi

AU - Yoshikawa, Yasushi

AU - Kizu, Shoichi

AU - Hanawa, Kimio

N1 - Funding Information: Acknowledgments This study was carried out as a part of the Japan–Hawaii Monitoring Program (JAHMP). The authors would like to thank the captain and crew of the T/V Miyagi-maru (Miyagi Prefectural Board of Education) for obtaining the XBT/XCTD data, and we also extend our appreciation to the Scripps High Resolution XBT/ XCTD (HRX) program and the Japan Argo team, who made data available from their websites. We also thank the editors (Drs. T. Hibiya and T. Suga) and anonymous reviewers for their helpful comments.

PY - 2012/4

Y1 - 2012/4

N2 - Baroclinic variations of the southward flow in the interior region of the North Pacific subtropical gyre are presented with five hydrographic sections from San Francisco to near Japan during 2004-2006. The volume transport averaged temperature of the interior flow, which varies vigorously by a maximum of 0. 8°C, is negatively correlated with the transport in the layer of density 24. 5-26. 5σ θ, associated with changes in the vertical current structure. Transport variation in this density layer is thus mainly responsible for the thermal impact of the interior flow on the heat transport of the subtropical gyre.

AB - Baroclinic variations of the southward flow in the interior region of the North Pacific subtropical gyre are presented with five hydrographic sections from San Francisco to near Japan during 2004-2006. The volume transport averaged temperature of the interior flow, which varies vigorously by a maximum of 0. 8°C, is negatively correlated with the transport in the layer of density 24. 5-26. 5σ θ, associated with changes in the vertical current structure. Transport variation in this density layer is thus mainly responsible for the thermal impact of the interior flow on the heat transport of the subtropical gyre.

KW - Interior region

KW - North Pacific

KW - Subtropical gyre

KW - Volume transport

KW - Volume transport averaged temperature

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JO - Journal of Oceanography

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IS - 2

ER -

Variation of the southward interior flow of the North Pacific subtropical gyre, as revealed by a repeat hydrographic survey

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Keywords

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