Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux
ABSTRACT Exchange processes along the subarctic front and the modi cation of subpolar water in the North Paci c are investigated using tracer data from World Ocean Circulation Experiment P14N and P17N lines. The North Paci c Current transports water on both sides of the subarctic front from the west...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1045.4308 2023-05-15T18:28:00+02:00 Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux Murat Aydin Zafer Top Donald B Olson The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1045.4308 http://cafethorium.whoi.edu/website/projects/aydin.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1045.4308 http://cafethorium.whoi.edu/website/projects/aydin.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://cafethorium.whoi.edu/website/projects/aydin.pdf text ftciteseerx 2020-04-05T00:17:42Z ABSTRACT Exchange processes along the subarctic front and the modi cation of subpolar water in the North Paci c are investigated using tracer data from World Ocean Circulation Experiment P14N and P17N lines. The North Paci c Current transports water on both sides of the subarctic front from the western to eastern North Paci c. During this transport, subpolar water from the western subpolar gyre becomes warmer and saltier through the main thermocline via isopycnal mixing with subtropical water. It is shown that this modi ed subpolar water of western origin is the primary source of well-ventilated water to the eastern subpolar gyre. The isopycnal mixing along the subarctic front is quanti ed with a two end-member linear mixing analysis using potential temperature, which allowed estimates of oxygen consumption and nitrate remineralization on intermediate layers. Based on the oxygen consumption estimates and temporal information from transient tracers, the vertically integrated oxygen consumption rate is calculated to be 2.1 6 0.4 M m 2 2 y 2 1 in the 132-706 m depth range. This implies a net carbon ux of approximately 19 6 4 gC m 2 2 y 2 1 out of the euphotic zone. Text Subarctic Unknown |
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English |
description |
ABSTRACT Exchange processes along the subarctic front and the modi cation of subpolar water in the North Paci c are investigated using tracer data from World Ocean Circulation Experiment P14N and P17N lines. The North Paci c Current transports water on both sides of the subarctic front from the western to eastern North Paci c. During this transport, subpolar water from the western subpolar gyre becomes warmer and saltier through the main thermocline via isopycnal mixing with subtropical water. It is shown that this modi ed subpolar water of western origin is the primary source of well-ventilated water to the eastern subpolar gyre. The isopycnal mixing along the subarctic front is quanti ed with a two end-member linear mixing analysis using potential temperature, which allowed estimates of oxygen consumption and nitrate remineralization on intermediate layers. Based on the oxygen consumption estimates and temporal information from transient tracers, the vertically integrated oxygen consumption rate is calculated to be 2.1 6 0.4 M m 2 2 y 2 1 in the 132-706 m depth range. This implies a net carbon ux of approximately 19 6 4 gC m 2 2 y 2 1 out of the euphotic zone. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Murat Aydin Zafer Top Donald B Olson |
spellingShingle |
Murat Aydin Zafer Top Donald B Olson Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux |
author_facet |
Murat Aydin Zafer Top Donald B Olson |
author_sort |
Murat Aydin |
title |
Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux |
title_short |
Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux |
title_full |
Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux |
title_fullStr |
Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux |
title_full_unstemmed |
Exchange processes and watermass modi cations along the subarctic front in the North Paci c: Oxygen consumption rates and net carbon ux |
title_sort |
exchange processes and watermass modi cations along the subarctic front in the north paci c: oxygen consumption rates and net carbon ux |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1045.4308 http://cafethorium.whoi.edu/website/projects/aydin.pdf |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
http://cafethorium.whoi.edu/website/projects/aydin.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1045.4308 http://cafethorium.whoi.edu/website/projects/aydin.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766210281832185856 |