Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium
We examine the impact of forcing a regional eddy-permitting ocean model of the subpolar North Atlantic with anomalous buoyancy fluxes corresponding to extended extreme states of the North Atlantic Oscillation (NAO). We find a weakened (enhanced) Meridional Overturning Circulation (MOC) in our low (h...
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fttriple:oai:gotriple.eu:10670/1.dfsufj 2023-05-15T17:26:45+02:00 Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium Myers, Paul G. Yang, Duo 2007-01-01 https://doi.org/10.7939/R36M33J3X https://era.library.ualberta.ca/items/e2275a01-cbe2-4924-a799-f28a5cd852d5 en eng doi:10.7939/R36M33J3X 10670/1.dfsufj https://era.library.ualberta.ca/items/e2275a01-cbe2-4924-a799-f28a5cd852d5 undefined ERA : Education and Research Archive envir geo Other https://vocabularies.coar-repositories.org/resource_types/c_1843/ 2007 fttriple https://doi.org/10.7939/R36M33J3X 2023-01-22T17:10:43Z We examine the impact of forcing a regional eddy-permitting ocean model of the subpolar North Atlantic with anomalous buoyancy fluxes corresponding to extended extreme states of the North Atlantic Oscillation (NAO). We find a weakened (enhanced) Meridional Overturning Circulation (MOC) in our low (high) NAO simulations. Such results may be consistent with ideas that suggest the Medieval Warm Period (MWP) and the Little Ice Age are associated with periods when the NAO is predominantly in one phase. Our results also show multidecadal MOC variability with a period of 70 years in our high-NAO simulation, in comparison to an equilibrium-like circulation under low-NAO related forcing. A less stable climatic state is therefore suggested to occur under high-NAO forcing, which may be consistent with ideas that suggest the warming associated with the MWP did not occur synchronously over the North Atlantic. The variability appears to be brought about by internal oceanic processes. Other/Unknown Material North Atlantic North Atlantic oscillation Unknown |
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envir geo Myers, Paul G. Yang, Duo Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium |
topic_facet |
envir geo |
description |
We examine the impact of forcing a regional eddy-permitting ocean model of the subpolar North Atlantic with anomalous buoyancy fluxes corresponding to extended extreme states of the North Atlantic Oscillation (NAO). We find a weakened (enhanced) Meridional Overturning Circulation (MOC) in our low (high) NAO simulations. Such results may be consistent with ideas that suggest the Medieval Warm Period (MWP) and the Little Ice Age are associated with periods when the NAO is predominantly in one phase. Our results also show multidecadal MOC variability with a period of 70 years in our high-NAO simulation, in comparison to an equilibrium-like circulation under low-NAO related forcing. A less stable climatic state is therefore suggested to occur under high-NAO forcing, which may be consistent with ideas that suggest the warming associated with the MWP did not occur synchronously over the North Atlantic. The variability appears to be brought about by internal oceanic processes. |
format |
Other/Unknown Material |
author |
Myers, Paul G. Yang, Duo |
author_facet |
Myers, Paul G. Yang, Duo |
author_sort |
Myers, Paul G. |
title |
Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium |
title_short |
Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium |
title_full |
Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium |
title_fullStr |
Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium |
title_full_unstemmed |
Impact of extended NAO buoyancy forcing on the subpolar North Atlantic and climate variability over the last millenium |
title_sort |
impact of extended nao buoyancy forcing on the subpolar north atlantic and climate variability over the last millenium |
publishDate |
2007 |
url |
https://doi.org/10.7939/R36M33J3X https://era.library.ualberta.ca/items/e2275a01-cbe2-4924-a799-f28a5cd852d5 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ERA : Education and Research Archive |
op_relation |
doi:10.7939/R36M33J3X 10670/1.dfsufj https://era.library.ualberta.ca/items/e2275a01-cbe2-4924-a799-f28a5cd852d5 |
op_rights |
undefined |
op_doi |
https://doi.org/10.7939/R36M33J3X |
_version_ |
1766118550816161792 |