A tracer study of the Arctic Ocean's liquid freshwater export variability
We present an analysis of the variability of the liquid Arctic freshwater (FW) export, using a simulation from the Community Climate System Model Version 3 (CCSM3) that includes passive tracers for FW from different sources. It is shown that the FW exported through the western Canadian Arctic Archip...
Published in: | Journal of Geophysical Research |
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American Geophysical Union
2010
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ftncar:oai:drupal-site.org:articles_17237 2023-09-05T13:16:00+02:00 A tracer study of the Arctic Ocean's liquid freshwater export variability Jahn, Alexandra (author) Tremblay, Bruno (author) Newton, Robert (author) Holland, Marika (author) Mysak, Lawrence (author) Dmitrenko, Igor (author) 2010-07-23 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-000-941 https://doi.org/10.1029/2009JC005873 en eng American Geophysical Union Journal of Geophysical Research-Oceans http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-000-941 doi:10.1029/2009JC005873 ark:/85065/d7ff3tn7 An edited version of this paper was published by AGU. Copyright 2010 American Geophysical Union. freshwater export tracers modeling Text article 2010 ftncar https://doi.org/10.1029/2009JC005873 2023-08-14T18:42:38Z We present an analysis of the variability of the liquid Arctic freshwater (FW) export, using a simulation from the Community Climate System Model Version 3 (CCSM3) that includes passive tracers for FW from different sources. It is shown that the FW exported through the western Canadian Arctic Archipelago (CAA) comes mainly from the Pacific and from North American runoff. The variability of the FW export from both of these sources is generally in phase, due to the strong influence of variations of the velocity anomaly on the CAA FW export variability. The velocity anomaly in the CAA is in turn mainly governed by variations in the large-scale atmospheric circulation (i.e., the Arctic Oscillation). In Fram Strait, the FW export is mainly composed of Eurasian runoff and FW of Pacific origin. The variability of the Fram Strait FW export is governed both by changes in the velocity and in the FW concentration, and the variability of the FW concentration from the two largest sources is not in phase. The Eurasian runoff export through Fram Strait depends strongly on the release of FW from the Eurasian shelf, which occurs during years with an anticyclonic circulation anomaly (negative Vorticity index) and takes 3 years to reach Fram Strait after leaving the shelf. In contrast, the variability of the Pacific FW export through Fram Strait is mainly controlled by changes in the Pacific FW storage in the Beaufort Gyre, with an increased export during years with a cyclonic circulation anomaly (positive Vorticity index). National Science Foundation (NSF): OPP‐0230325 Arctic Science Program Grant: ARC‐ 0520496 National Science Foundation (NSF): OPP‐0230264 Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Fram Strait OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Canadian Arctic Archipelago Pacific Journal of Geophysical Research 115 C7 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
freshwater export tracers modeling |
spellingShingle |
freshwater export tracers modeling A tracer study of the Arctic Ocean's liquid freshwater export variability |
topic_facet |
freshwater export tracers modeling |
description |
We present an analysis of the variability of the liquid Arctic freshwater (FW) export, using a simulation from the Community Climate System Model Version 3 (CCSM3) that includes passive tracers for FW from different sources. It is shown that the FW exported through the western Canadian Arctic Archipelago (CAA) comes mainly from the Pacific and from North American runoff. The variability of the FW export from both of these sources is generally in phase, due to the strong influence of variations of the velocity anomaly on the CAA FW export variability. The velocity anomaly in the CAA is in turn mainly governed by variations in the large-scale atmospheric circulation (i.e., the Arctic Oscillation). In Fram Strait, the FW export is mainly composed of Eurasian runoff and FW of Pacific origin. The variability of the Fram Strait FW export is governed both by changes in the velocity and in the FW concentration, and the variability of the FW concentration from the two largest sources is not in phase. The Eurasian runoff export through Fram Strait depends strongly on the release of FW from the Eurasian shelf, which occurs during years with an anticyclonic circulation anomaly (negative Vorticity index) and takes 3 years to reach Fram Strait after leaving the shelf. In contrast, the variability of the Pacific FW export through Fram Strait is mainly controlled by changes in the Pacific FW storage in the Beaufort Gyre, with an increased export during years with a cyclonic circulation anomaly (positive Vorticity index). National Science Foundation (NSF): OPP‐0230325 Arctic Science Program Grant: ARC‐ 0520496 National Science Foundation (NSF): OPP‐0230264 |
author2 |
Jahn, Alexandra (author) Tremblay, Bruno (author) Newton, Robert (author) Holland, Marika (author) Mysak, Lawrence (author) Dmitrenko, Igor (author) |
format |
Article in Journal/Newspaper |
title |
A tracer study of the Arctic Ocean's liquid freshwater export variability |
title_short |
A tracer study of the Arctic Ocean's liquid freshwater export variability |
title_full |
A tracer study of the Arctic Ocean's liquid freshwater export variability |
title_fullStr |
A tracer study of the Arctic Ocean's liquid freshwater export variability |
title_full_unstemmed |
A tracer study of the Arctic Ocean's liquid freshwater export variability |
title_sort |
tracer study of the arctic ocean's liquid freshwater export variability |
publisher |
American Geophysical Union |
publishDate |
2010 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-000-941 https://doi.org/10.1029/2009JC005873 |
geographic |
Arctic Canadian Arctic Archipelago Pacific |
geographic_facet |
Arctic Canadian Arctic Archipelago Pacific |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Fram Strait |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Fram Strait |
op_relation |
Journal of Geophysical Research-Oceans http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-000-941 doi:10.1029/2009JC005873 ark:/85065/d7ff3tn7 |
op_rights |
An edited version of this paper was published by AGU. Copyright 2010 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2009JC005873 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
container_issue |
C7 |
_version_ |
1776197764256890880 |