The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N
The East Greenland Irminger Current (EGIC) decadal transport variability likely influences deep convection intensity in the Labrador and Irminger Seas but is poorly known yet. The EGIC transport west of the 2000 m isobath was estimated, for the first time, between 1992 and 2009 by combining surface...
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ftarchimer:oai:archimer.ifremer.fr:14467 2023-05-15T16:03:34+02:00 The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N Daniault, N. Mercier, Herle Lherminier, Pascale 2011-04 application/pdf https://archimer.ifremer.fr/doc/00033/14467/11763.pdf https://doi.org/10.1029/2011GL046863 https://archimer.ifremer.fr/doc/00033/14467/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00033/14467/11763.pdf doi:10.1029/2011GL046863 https://archimer.ifremer.fr/doc/00033/14467/ 2011 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2011-04 , Vol. 38 , N. L07601 , P. 1-4 Keywords: East Greenland Current Irminger Current transport variability text Publication info:eu-repo/semantics/article 2011 ftarchimer https://doi.org/10.1029/2011GL046863 2021-09-23T20:19:19Z The East Greenland Irminger Current (EGIC) decadal transport variability likely influences deep convection intensity in the Labrador and Irminger Seas but is poorly known yet. The EGIC transport west of the 2000 m isobath was estimated, for the first time, between 1992 and 2009 by combining surface geostrophic velocities derived from altimetry with an estimate of the vertical structure of the transport variability statistically determined from a moored array deployed in 2004-2006. The reconstructed 17-year time series of the EGIC transport was then validated against independent estimates confirming that, indeed, the vertical distribution of the EGIC variability has not changed significantly over the last two decades. The 1992-2009 mean transport is 19.5 Sv with a standard error of 0.3 Sv (1 Sv = 10(6) m(3) s(-1)). In 1992-1996, the EGIC transport was close to the average. Over the following decade (1997-2005), the EGIC transport declined by 3 Sv (15%) so that the 2004-2006 mean transport inferred from the moored array is 2.2 Sv (10%) less than the 1992-2009 mean. It was followed by a period of higher transport. The seasonal to interannual transport variability is coherent with the variability of the windstress curl at the center of the Irminger Sea. Article in Journal/Newspaper East Greenland east greenland current Greenland Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Geophysical Research Letters 38 7 n/a n/a |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Keywords: East Greenland Current Irminger Current transport variability |
spellingShingle |
Keywords: East Greenland Current Irminger Current transport variability Daniault, N. Mercier, Herle Lherminier, Pascale The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N |
topic_facet |
Keywords: East Greenland Current Irminger Current transport variability |
description |
The East Greenland Irminger Current (EGIC) decadal transport variability likely influences deep convection intensity in the Labrador and Irminger Seas but is poorly known yet. The EGIC transport west of the 2000 m isobath was estimated, for the first time, between 1992 and 2009 by combining surface geostrophic velocities derived from altimetry with an estimate of the vertical structure of the transport variability statistically determined from a moored array deployed in 2004-2006. The reconstructed 17-year time series of the EGIC transport was then validated against independent estimates confirming that, indeed, the vertical distribution of the EGIC variability has not changed significantly over the last two decades. The 1992-2009 mean transport is 19.5 Sv with a standard error of 0.3 Sv (1 Sv = 10(6) m(3) s(-1)). In 1992-1996, the EGIC transport was close to the average. Over the following decade (1997-2005), the EGIC transport declined by 3 Sv (15%) so that the 2004-2006 mean transport inferred from the moored array is 2.2 Sv (10%) less than the 1992-2009 mean. It was followed by a period of higher transport. The seasonal to interannual transport variability is coherent with the variability of the windstress curl at the center of the Irminger Sea. |
format |
Article in Journal/Newspaper |
author |
Daniault, N. Mercier, Herle Lherminier, Pascale |
author_facet |
Daniault, N. Mercier, Herle Lherminier, Pascale |
author_sort |
Daniault, N. |
title |
The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N |
title_short |
The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N |
title_full |
The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N |
title_fullStr |
The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N |
title_full_unstemmed |
The 1992-2009 transport variability of the East Greenland-Irminger Current at 60 degrees N |
title_sort |
1992-2009 transport variability of the east greenland-irminger current at 60 degrees n |
publisher |
Amer Geophysical Union |
publishDate |
2011 |
url |
https://archimer.ifremer.fr/doc/00033/14467/11763.pdf https://doi.org/10.1029/2011GL046863 https://archimer.ifremer.fr/doc/00033/14467/ |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Curl Greenland Irminger Sea |
geographic_facet |
Curl Greenland Irminger Sea |
genre |
East Greenland east greenland current Greenland |
genre_facet |
East Greenland east greenland current Greenland |
op_source |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2011-04 , Vol. 38 , N. L07601 , P. 1-4 |
op_relation |
https://archimer.ifremer.fr/doc/00033/14467/11763.pdf doi:10.1029/2011GL046863 https://archimer.ifremer.fr/doc/00033/14467/ |
op_rights |
2011 by the American Geophysical Union info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2011GL046863 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
7 |
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n/a |
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n/a |
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1766399251450953728 |