Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation
Analyses of a 500-yr control integration with the non-flux-adjusted coupled atmosphere–sea ice–ocean model ECHAM5/Max-Planck-Institute Ocean Model (MPI-OM) show pronounced multidecadal fluctuations of the Atlantic overturning circulation and the associated meridional heat transport. The period of th...
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ftoceanrep:oai:oceanrep.geomar.de:1762 2023-05-15T14:51:34+02:00 Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation Jungclaus, J. Haak, H. Latif, Mojib Mikolajewicz, U. 2005 text https://oceanrep.geomar.de/id/eprint/1762/ https://oceanrep.geomar.de/id/eprint/1762/1/JCLI3462.pdf https://doi.org/10.1175/JCLI3462.1 en eng AMS (American Meteorological Society) https://oceanrep.geomar.de/id/eprint/1762/1/JCLI3462.pdf Jungclaus, J., Haak, H., Latif, M. and Mikolajewicz, U. (2005) Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation. Open Access Journal of Climate, 18 (19). pp. 4013-4031. DOI 10.1175/JCLI3462.1 <https://doi.org/10.1175/JCLI3462.1>. doi:10.1175/JCLI3462.1 info:eu-repo/semantics/openAccess Article PeerReviewed 2005 ftoceanrep https://doi.org/10.1175/JCLI3462.1 2023-04-07T14:44:40Z Analyses of a 500-yr control integration with the non-flux-adjusted coupled atmosphere–sea ice–ocean model ECHAM5/Max-Planck-Institute Ocean Model (MPI-OM) show pronounced multidecadal fluctuations of the Atlantic overturning circulation and the associated meridional heat transport. The period of the oscillations is about 70–80 yr. The low-frequency variability of the meridional overturning circulation (MOC) contributes substantially to sea surface temperature and sea ice fluctuations in the North Atlantic. The strength of the overturning circulation is related to the convective activity in the deep-water formation regions, most notably the Labrador Sea, and the time-varying control on the freshwater export from the Arctic to the convection sites modulates the overturning circulation. The variability is sustained by an interplay between the storage and release of freshwater from the central Arctic and circulation changes in the Nordic Seas that are caused by variations in the Atlantic heat and salt transport. The relatively high resolution in the deep-water formation region and the Arctic Ocean suggests that a better representation of convective and frontal processes not only leads to an improvement in the mean state but also introduces new mechanisms determining multidecadal variability in large-scale ocean circulation. Article in Journal/Newspaper Arctic Arctic Ocean Labrador Sea Nordic Seas North Atlantic Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Journal of Climate 18 19 4013 4031 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Analyses of a 500-yr control integration with the non-flux-adjusted coupled atmosphere–sea ice–ocean model ECHAM5/Max-Planck-Institute Ocean Model (MPI-OM) show pronounced multidecadal fluctuations of the Atlantic overturning circulation and the associated meridional heat transport. The period of the oscillations is about 70–80 yr. The low-frequency variability of the meridional overturning circulation (MOC) contributes substantially to sea surface temperature and sea ice fluctuations in the North Atlantic. The strength of the overturning circulation is related to the convective activity in the deep-water formation regions, most notably the Labrador Sea, and the time-varying control on the freshwater export from the Arctic to the convection sites modulates the overturning circulation. The variability is sustained by an interplay between the storage and release of freshwater from the central Arctic and circulation changes in the Nordic Seas that are caused by variations in the Atlantic heat and salt transport. The relatively high resolution in the deep-water formation region and the Arctic Ocean suggests that a better representation of convective and frontal processes not only leads to an improvement in the mean state but also introduces new mechanisms determining multidecadal variability in large-scale ocean circulation. |
format |
Article in Journal/Newspaper |
author |
Jungclaus, J. Haak, H. Latif, Mojib Mikolajewicz, U. |
spellingShingle |
Jungclaus, J. Haak, H. Latif, Mojib Mikolajewicz, U. Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation |
author_facet |
Jungclaus, J. Haak, H. Latif, Mojib Mikolajewicz, U. |
author_sort |
Jungclaus, J. |
title |
Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation |
title_short |
Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation |
title_full |
Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation |
title_fullStr |
Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation |
title_full_unstemmed |
Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation |
title_sort |
artic-north atlantic interactions and multidecadal variability of the thermohaline circulation |
publisher |
AMS (American Meteorological Society) |
publishDate |
2005 |
url |
https://oceanrep.geomar.de/id/eprint/1762/ https://oceanrep.geomar.de/id/eprint/1762/1/JCLI3462.pdf https://doi.org/10.1175/JCLI3462.1 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Labrador Sea Nordic Seas North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean Labrador Sea Nordic Seas North Atlantic Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/1762/1/JCLI3462.pdf Jungclaus, J., Haak, H., Latif, M. and Mikolajewicz, U. (2005) Artic-North Atlantic interactions and multidecadal variability of the thermohaline circulation. Open Access Journal of Climate, 18 (19). pp. 4013-4031. DOI 10.1175/JCLI3462.1 <https://doi.org/10.1175/JCLI3462.1>. doi:10.1175/JCLI3462.1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1175/JCLI3462.1 |
container_title |
Journal of Climate |
container_volume |
18 |
container_issue |
19 |
container_start_page |
4013 |
op_container_end_page |
4031 |
_version_ |
1766322698209722368 |