AMOC modes linked with distinct North Atlantic deep water formation sites
The Atlantic Meridional Overturning Circulation (AMOC) is a tipping component of the climate system, with a quasi-global impact. Several numerical and observational studies emphasized two modes of AMOC variability, characterized by two distinct Atlantic sea surface temperature patterns. One is assoc...
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2022
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ftawi:oai:epic.awi.de:56463 2024-01-28T10:07:21+01:00 AMOC modes linked with distinct North Atlantic deep water formation sites Dima, Mihai Lohmann, Gerrit Ionita, Monica Knorr, Gregor Scholz, Patrick 2022 application/pdf https://epic.awi.de/id/eprint/56463/ https://epic.awi.de/id/eprint/56463/1/Dima-ClimDyn2022.pdf https://doi.org/10.1007/s00382-022-06156-w https://hdl.handle.net/10013/epic.e7898b32-a19b-4913-8d0e-bf1a98430e5f unknown https://epic.awi.de/id/eprint/56463/1/Dima-ClimDyn2022.pdf Dima, M. , Lohmann, G. orcid:0000-0003-2089-733X , Ionita, M. orcid:0000-0001-8240-4380 , Knorr, G. orcid:0000-0002-8317-5046 and Scholz, P. orcid:0000-0003-2692-7624 (2022) AMOC modes linked with distinct North Atlantic deep water formation sites , Climate Dynamics, 59 (3-4), pp. 837-849 . doi:10.1007/s00382-022-06156-w <https://doi.org/10.1007/s00382-022-06156-w> , hdl:10013/epic.e7898b32-a19b-4913-8d0e-bf1a98430e5f EPIC3Climate Dynamics, 59(3-4), pp. 837-849, ISSN: 0930-7575 Article NonPeerReviewed 2022 ftawi https://doi.org/10.1007/s00382-022-06156-w 2024-01-01T00:23:11Z The Atlantic Meridional Overturning Circulation (AMOC) is a tipping component of the climate system, with a quasi-global impact. Several numerical and observational studies emphasized two modes of AMOC variability, characterized by two distinct Atlantic sea surface temperature patterns. One is associated with centennial changes, the Trend Mode, and the other with the Atlantic Multidecadal Oscillation (AMO). The origin of the different manifestations of these modes it is not fully understood. Using observational data and an ocean general circulation model we present evidence that, whereas the Trend Mode is mainly linked with deep water formation in the Nordic Seas and with a North Atlantic AMOC cell centered at 50° N, AMO is related with deep water formation in the Labrador and Irminger Seas and with an overturning cell centered at 20° N. In combination with previous studies, these results imply that a main route of increasing atmospheric CO2 concentration influence on AMOC passes through deep water formation in the Nordic Seas and it is reflected in a subpolar North Atlantic meridional cell. Article in Journal/Newspaper Nordic Seas North Atlantic Deep Water North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Climate Dynamics 59 3-4 837 849 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The Atlantic Meridional Overturning Circulation (AMOC) is a tipping component of the climate system, with a quasi-global impact. Several numerical and observational studies emphasized two modes of AMOC variability, characterized by two distinct Atlantic sea surface temperature patterns. One is associated with centennial changes, the Trend Mode, and the other with the Atlantic Multidecadal Oscillation (AMO). The origin of the different manifestations of these modes it is not fully understood. Using observational data and an ocean general circulation model we present evidence that, whereas the Trend Mode is mainly linked with deep water formation in the Nordic Seas and with a North Atlantic AMOC cell centered at 50° N, AMO is related with deep water formation in the Labrador and Irminger Seas and with an overturning cell centered at 20° N. In combination with previous studies, these results imply that a main route of increasing atmospheric CO2 concentration influence on AMOC passes through deep water formation in the Nordic Seas and it is reflected in a subpolar North Atlantic meridional cell. |
format |
Article in Journal/Newspaper |
author |
Dima, Mihai Lohmann, Gerrit Ionita, Monica Knorr, Gregor Scholz, Patrick |
spellingShingle |
Dima, Mihai Lohmann, Gerrit Ionita, Monica Knorr, Gregor Scholz, Patrick AMOC modes linked with distinct North Atlantic deep water formation sites |
author_facet |
Dima, Mihai Lohmann, Gerrit Ionita, Monica Knorr, Gregor Scholz, Patrick |
author_sort |
Dima, Mihai |
title |
AMOC modes linked with distinct North Atlantic deep water formation sites |
title_short |
AMOC modes linked with distinct North Atlantic deep water formation sites |
title_full |
AMOC modes linked with distinct North Atlantic deep water formation sites |
title_fullStr |
AMOC modes linked with distinct North Atlantic deep water formation sites |
title_full_unstemmed |
AMOC modes linked with distinct North Atlantic deep water formation sites |
title_sort |
amoc modes linked with distinct north atlantic deep water formation sites |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/56463/ https://epic.awi.de/id/eprint/56463/1/Dima-ClimDyn2022.pdf https://doi.org/10.1007/s00382-022-06156-w https://hdl.handle.net/10013/epic.e7898b32-a19b-4913-8d0e-bf1a98430e5f |
genre |
Nordic Seas North Atlantic Deep Water North Atlantic |
genre_facet |
Nordic Seas North Atlantic Deep Water North Atlantic |
op_source |
EPIC3Climate Dynamics, 59(3-4), pp. 837-849, ISSN: 0930-7575 |
op_relation |
https://epic.awi.de/id/eprint/56463/1/Dima-ClimDyn2022.pdf Dima, M. , Lohmann, G. orcid:0000-0003-2089-733X , Ionita, M. orcid:0000-0001-8240-4380 , Knorr, G. orcid:0000-0002-8317-5046 and Scholz, P. orcid:0000-0003-2692-7624 (2022) AMOC modes linked with distinct North Atlantic deep water formation sites , Climate Dynamics, 59 (3-4), pp. 837-849 . doi:10.1007/s00382-022-06156-w <https://doi.org/10.1007/s00382-022-06156-w> , hdl:10013/epic.e7898b32-a19b-4913-8d0e-bf1a98430e5f |
op_doi |
https://doi.org/10.1007/s00382-022-06156-w |
container_title |
Climate Dynamics |
container_volume |
59 |
container_issue |
3-4 |
container_start_page |
837 |
op_container_end_page |
849 |
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1789334932786511872 |