Multidecadal CO2uptake variability of the North Atlantic
The multidecadal variability of air-sea CO(2)fluxes in the North Atlantic under preindustrial atmospheric CO(2) conditions is simulated, using a coupled biogeochemical/circulation model driven by long-term surface forcing reconstructed from the leading modes of sea level pressure observations from 1...
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AGU (American Geophysical Union)
2010
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ftoceanrep:oai:oceanrep.geomar.de:13364 2023-05-15T16:29:36+02:00 Multidecadal CO2uptake variability of the North Atlantic Löptien, Ulrike Eden, Carsten 2010 text https://oceanrep.geomar.de/id/eprint/13364/ https://oceanrep.geomar.de/id/eprint/13364/1/L%C3%B6ptien.pdf https://doi.org/10.1029/2009JD012431 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/13364/1/L%C3%B6ptien.pdf Löptien, U. and Eden, C. (2010) Multidecadal CO2uptake variability of the North Atlantic. Open Access Journal of Geophysical Research: Atmospheres, 115 (D12). D12113. DOI 10.1029/2009JD012431 <https://doi.org/10.1029/2009JD012431>. doi:10.1029/2009JD012431 info:eu-repo/semantics/openAccess Article PeerReviewed 2010 ftoceanrep https://doi.org/10.1029/2009JD012431 2023-04-07T15:02:24Z The multidecadal variability of air-sea CO(2)fluxes in the North Atlantic under preindustrial atmospheric CO(2) conditions is simulated, using a coupled biogeochemical/circulation model driven by long-term surface forcing reconstructed from the leading modes of sea level pressure observations from 1850 to 2000. Heat fluxes are of great importance for the multidecadal CO(2) fluctuations, about equal in magnitude to wind stress, in contrast to their less prominent role for CO(2) flux variability on interannual timescales. Another difference, compared to higher frequencies, is the dominance of the North Atlantic Oscillation in driving the variability of the air-sea CO(2) fluxes. Two spatially distinct regimes lead to large anomalies in the CO(2) fluxes but compensate to a large degree. The first regime is advective and has its clear signature southeast of Greenland while the second one, in the vicinity of the Labrador Sea and off Newfoundland, is convective. In both regimes, the multidecadal CO(2) fluctuations are driven mainly by variations in temperature, salinity, and DIC content at the sea surface while the role of the biological pump is of minor importance in this particular model. The magnitude of the simulated multidecadal CO(2) uptake changes is on the order of 0.02 Pg C/yr and amounts to 10-15% of the estimated annual anthropogenic CO(2) uptake of the North Atlantic. Article in Journal/Newspaper Greenland Labrador Sea Newfoundland North Atlantic North Atlantic oscillation OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Greenland Newfoundland Journal of Geophysical Research 115 D12 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The multidecadal variability of air-sea CO(2)fluxes in the North Atlantic under preindustrial atmospheric CO(2) conditions is simulated, using a coupled biogeochemical/circulation model driven by long-term surface forcing reconstructed from the leading modes of sea level pressure observations from 1850 to 2000. Heat fluxes are of great importance for the multidecadal CO(2) fluctuations, about equal in magnitude to wind stress, in contrast to their less prominent role for CO(2) flux variability on interannual timescales. Another difference, compared to higher frequencies, is the dominance of the North Atlantic Oscillation in driving the variability of the air-sea CO(2) fluxes. Two spatially distinct regimes lead to large anomalies in the CO(2) fluxes but compensate to a large degree. The first regime is advective and has its clear signature southeast of Greenland while the second one, in the vicinity of the Labrador Sea and off Newfoundland, is convective. In both regimes, the multidecadal CO(2) fluctuations are driven mainly by variations in temperature, salinity, and DIC content at the sea surface while the role of the biological pump is of minor importance in this particular model. The magnitude of the simulated multidecadal CO(2) uptake changes is on the order of 0.02 Pg C/yr and amounts to 10-15% of the estimated annual anthropogenic CO(2) uptake of the North Atlantic. |
format |
Article in Journal/Newspaper |
author |
Löptien, Ulrike Eden, Carsten |
spellingShingle |
Löptien, Ulrike Eden, Carsten Multidecadal CO2uptake variability of the North Atlantic |
author_facet |
Löptien, Ulrike Eden, Carsten |
author_sort |
Löptien, Ulrike |
title |
Multidecadal CO2uptake variability of the North Atlantic |
title_short |
Multidecadal CO2uptake variability of the North Atlantic |
title_full |
Multidecadal CO2uptake variability of the North Atlantic |
title_fullStr |
Multidecadal CO2uptake variability of the North Atlantic |
title_full_unstemmed |
Multidecadal CO2uptake variability of the North Atlantic |
title_sort |
multidecadal co2uptake variability of the north atlantic |
publisher |
AGU (American Geophysical Union) |
publishDate |
2010 |
url |
https://oceanrep.geomar.de/id/eprint/13364/ https://oceanrep.geomar.de/id/eprint/13364/1/L%C3%B6ptien.pdf https://doi.org/10.1029/2009JD012431 |
geographic |
Greenland Newfoundland |
geographic_facet |
Greenland Newfoundland |
genre |
Greenland Labrador Sea Newfoundland North Atlantic North Atlantic oscillation |
genre_facet |
Greenland Labrador Sea Newfoundland North Atlantic North Atlantic oscillation |
op_relation |
https://oceanrep.geomar.de/id/eprint/13364/1/L%C3%B6ptien.pdf Löptien, U. and Eden, C. (2010) Multidecadal CO2uptake variability of the North Atlantic. Open Access Journal of Geophysical Research: Atmospheres, 115 (D12). D12113. DOI 10.1029/2009JD012431 <https://doi.org/10.1029/2009JD012431>. doi:10.1029/2009JD012431 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2009JD012431 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
container_issue |
D12 |
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1766019314884804608 |