Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic
© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Li, F., Lozier, M. S., Holliday, N. P., Johns, W. E., Le Bras, I. A., Moat, B. I., Cunningham, S. A., & de Jong, M. F. Observation-based estimat...
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Online Access: | https://hdl.handle.net/1912/27895 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/27895 2023-05-15T14:25:38+02:00 Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic Li, Feili Lozier, M. Susan Holliday, Naomi Penny Johns, William E. Le Bras, Isabela A. Moat, Bengamin I. Cunningham, Stuart A. de Jong, Marieke Femke 2021-07-06 https://hdl.handle.net/1912/27895 unknown Elsevier https://doi.org/10.1016/j.pocean.2021.102640 Li, F., Lozier, M. S., Holliday, N. P., Johns, W. E., Le Bras, I. A., Moat, B. I., Cunningham, S. A., & de Jong, M. F. (2021). Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic. Progress in Oceanography, 197, 102640. https://hdl.handle.net/1912/27895 doi:10.1016/j.pocean.2021.102640 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ CC-BY Li, F., Lozier, M. S., Holliday, N. P., Johns, W. E., Le Bras, I. A., Moat, B. I., Cunningham, S. A., & de Jong, M. F. (2021). Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic. Progress in Oceanography, 197, 102640. doi:10.1016/j.pocean.2021.102640 Oceanic heat and salinity transports Surface heat and freshwater exchange Overturning and gyre circulation Article 2021 ftwhoas https://doi.org/10.1016/j.pocean.2021.102640 2022-05-28T23:04:24Z © The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Li, F., Lozier, M. S., Holliday, N. P., Johns, W. E., Le Bras, I. A., Moat, B. I., Cunningham, S. A., & de Jong, M. F. Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic. Progress in Oceanography, 197, (2021): 102640, https://doi.org/10.1016/j.pocean.2021.102640. Continuous measurements from the OSNAP (Overturning in the Subpolar North Atlantic Program) array yield the first estimates of trans-basin heat and salinity transports in the subpolar latitudes. For the period from August 2014 to May 2018, there is a poleward heat transport of 0.50 ± 0.05 PW and a poleward salinity transport of 12.5 ± 1.0 Sv across the OSNAP section. Based on the mass and salt budget analyses, we estimate that a surface freshwater input of 0.36 ± 0.05 Sv over the broad subpolar-Arctic region is needed to balance the ocean salinity change created by the OSNAP transports. The overturning circulation is largely responsible for setting these heat and salinity transports (and the derived surface freshwater input) derived from the OSNAP array, while the gyre (isopycnal) circulation contributes to a lesser, but still significant, extent. Despite its relatively weak overturning and heat transport, the Labrador Sea is a strong contributor to salinity and freshwater changes in the subpolar region. Combined with trans-basin transport estimates at other locations, we provide new estimates for the time-mean surface heat and freshwater divergences over a wide domain of the Arctic-North Atlantic region to the north and south of the OSNAP line. Furthermore, we estimate the total heat and freshwater exchanges across the surface area of the extratropical North Atlantic between the OSNAP and the RAPID-MOCHA (RAPID Meridional Overturning Circulation and Heat-flux Array) arrays, by combining the cross-sectional transports with ... Article in Journal/Newspaper Arctic Arctic Labrador Sea North Atlantic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Progress in Oceanography 197 102640 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
unknown |
topic |
Oceanic heat and salinity transports Surface heat and freshwater exchange Overturning and gyre circulation |
spellingShingle |
Oceanic heat and salinity transports Surface heat and freshwater exchange Overturning and gyre circulation Li, Feili Lozier, M. Susan Holliday, Naomi Penny Johns, William E. Le Bras, Isabela A. Moat, Bengamin I. Cunningham, Stuart A. de Jong, Marieke Femke Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic |
topic_facet |
Oceanic heat and salinity transports Surface heat and freshwater exchange Overturning and gyre circulation |
description |
© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Li, F., Lozier, M. S., Holliday, N. P., Johns, W. E., Le Bras, I. A., Moat, B. I., Cunningham, S. A., & de Jong, M. F. Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic. Progress in Oceanography, 197, (2021): 102640, https://doi.org/10.1016/j.pocean.2021.102640. Continuous measurements from the OSNAP (Overturning in the Subpolar North Atlantic Program) array yield the first estimates of trans-basin heat and salinity transports in the subpolar latitudes. For the period from August 2014 to May 2018, there is a poleward heat transport of 0.50 ± 0.05 PW and a poleward salinity transport of 12.5 ± 1.0 Sv across the OSNAP section. Based on the mass and salt budget analyses, we estimate that a surface freshwater input of 0.36 ± 0.05 Sv over the broad subpolar-Arctic region is needed to balance the ocean salinity change created by the OSNAP transports. The overturning circulation is largely responsible for setting these heat and salinity transports (and the derived surface freshwater input) derived from the OSNAP array, while the gyre (isopycnal) circulation contributes to a lesser, but still significant, extent. Despite its relatively weak overturning and heat transport, the Labrador Sea is a strong contributor to salinity and freshwater changes in the subpolar region. Combined with trans-basin transport estimates at other locations, we provide new estimates for the time-mean surface heat and freshwater divergences over a wide domain of the Arctic-North Atlantic region to the north and south of the OSNAP line. Furthermore, we estimate the total heat and freshwater exchanges across the surface area of the extratropical North Atlantic between the OSNAP and the RAPID-MOCHA (RAPID Meridional Overturning Circulation and Heat-flux Array) arrays, by combining the cross-sectional transports with ... |
format |
Article in Journal/Newspaper |
author |
Li, Feili Lozier, M. Susan Holliday, Naomi Penny Johns, William E. Le Bras, Isabela A. Moat, Bengamin I. Cunningham, Stuart A. de Jong, Marieke Femke |
author_facet |
Li, Feili Lozier, M. Susan Holliday, Naomi Penny Johns, William E. Le Bras, Isabela A. Moat, Bengamin I. Cunningham, Stuart A. de Jong, Marieke Femke |
author_sort |
Li, Feili |
title |
Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic |
title_short |
Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic |
title_full |
Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic |
title_fullStr |
Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic |
title_full_unstemmed |
Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic |
title_sort |
observation-based estimates of heat and freshwater exchanges from the subtropical north atlantic to the arctic |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://hdl.handle.net/1912/27895 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Labrador Sea North Atlantic |
genre_facet |
Arctic Arctic Labrador Sea North Atlantic |
op_source |
Li, F., Lozier, M. S., Holliday, N. P., Johns, W. E., Le Bras, I. A., Moat, B. I., Cunningham, S. A., & de Jong, M. F. (2021). Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic. Progress in Oceanography, 197, 102640. doi:10.1016/j.pocean.2021.102640 |
op_relation |
https://doi.org/10.1016/j.pocean.2021.102640 Li, F., Lozier, M. S., Holliday, N. P., Johns, W. E., Le Bras, I. A., Moat, B. I., Cunningham, S. A., & de Jong, M. F. (2021). Observation-based estimates of heat and freshwater exchanges from the subtropical North Atlantic to the Arctic. Progress in Oceanography, 197, 102640. https://hdl.handle.net/1912/27895 doi:10.1016/j.pocean.2021.102640 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.pocean.2021.102640 |
container_title |
Progress in Oceanography |
container_volume |
197 |
container_start_page |
102640 |
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1766298080671432704 |