Oceanic deep water formation as a sink of persistent organic pollutants
The formation of deep oceanic waters occurs as part of the global thermohaline circulation due to gradients in salinity and temperature, and moves surface waters, including persistent organic pollutants (POPs), directly to the deep Ocean. For the four main deep water formation regions, removal fluxe...
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ftunivrhodeislan:oai:digitalcommons.uri.edu:gsofacpubs-2796 2024-01-21T10:09:07+01:00 Oceanic deep water formation as a sink of persistent organic pollutants Lohmann, Rainer Jurado, Elena Pilson, Michael E.Q. Dachs, Jordi 2006-06-28T07:00:00Z https://digitalcommons.uri.edu/gsofacpubs/1826 https://doi.org/10.1029/2006GL025953 unknown DigitalCommons@URI https://digitalcommons.uri.edu/gsofacpubs/1826 doi:10.1029/2006GL025953 https://doi.org/10.1029/2006GL025953 Graduate School of Oceanography Faculty Publications text 2006 ftunivrhodeislan https://doi.org/10.1029/2006GL025953 2023-12-25T19:10:01Z The formation of deep oceanic waters occurs as part of the global thermohaline circulation due to gradients in salinity and temperature, and moves surface waters, including persistent organic pollutants (POPs), directly to the deep Ocean. For the four main deep water formation regions, removal fluxes of polychlorinated biphenyl (PCB) congeners were calculated based on their surface water concentrations and deep water formation rates. PCB fluxes were higher in the Norwegian Sea (ca. 420 kg/yr) than in the Labrador, Ross and Weddell Seas (ca. 140-160 kg/yr each). In the four regions considered, more PCBs were removed due to deep water formation (ca. 870 kg/yr) than by the settling of PCBs associated to organic carbon (ca. 320 kg/yr), whereas the settling flux dominates on a basin scale. Several POPs could serve as tracers for oceanic deep water plumes, as they have only been produced for a few decades. Copyright 2006 by the American Geophysical Union. Text Norwegian Sea University of Rhode Island: DigitalCommons@URI Norwegian Sea Weddell Geophysical Research Letters 33 12 |
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Open Polar |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
language |
unknown |
description |
The formation of deep oceanic waters occurs as part of the global thermohaline circulation due to gradients in salinity and temperature, and moves surface waters, including persistent organic pollutants (POPs), directly to the deep Ocean. For the four main deep water formation regions, removal fluxes of polychlorinated biphenyl (PCB) congeners were calculated based on their surface water concentrations and deep water formation rates. PCB fluxes were higher in the Norwegian Sea (ca. 420 kg/yr) than in the Labrador, Ross and Weddell Seas (ca. 140-160 kg/yr each). In the four regions considered, more PCBs were removed due to deep water formation (ca. 870 kg/yr) than by the settling of PCBs associated to organic carbon (ca. 320 kg/yr), whereas the settling flux dominates on a basin scale. Several POPs could serve as tracers for oceanic deep water plumes, as they have only been produced for a few decades. Copyright 2006 by the American Geophysical Union. |
format |
Text |
author |
Lohmann, Rainer Jurado, Elena Pilson, Michael E.Q. Dachs, Jordi |
spellingShingle |
Lohmann, Rainer Jurado, Elena Pilson, Michael E.Q. Dachs, Jordi Oceanic deep water formation as a sink of persistent organic pollutants |
author_facet |
Lohmann, Rainer Jurado, Elena Pilson, Michael E.Q. Dachs, Jordi |
author_sort |
Lohmann, Rainer |
title |
Oceanic deep water formation as a sink of persistent organic pollutants |
title_short |
Oceanic deep water formation as a sink of persistent organic pollutants |
title_full |
Oceanic deep water formation as a sink of persistent organic pollutants |
title_fullStr |
Oceanic deep water formation as a sink of persistent organic pollutants |
title_full_unstemmed |
Oceanic deep water formation as a sink of persistent organic pollutants |
title_sort |
oceanic deep water formation as a sink of persistent organic pollutants |
publisher |
DigitalCommons@URI |
publishDate |
2006 |
url |
https://digitalcommons.uri.edu/gsofacpubs/1826 https://doi.org/10.1029/2006GL025953 |
geographic |
Norwegian Sea Weddell |
geographic_facet |
Norwegian Sea Weddell |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_source |
Graduate School of Oceanography Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/gsofacpubs/1826 doi:10.1029/2006GL025953 https://doi.org/10.1029/2006GL025953 |
op_doi |
https://doi.org/10.1029/2006GL025953 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
12 |
_version_ |
1788700029085548544 |