Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ...
We investigate how ocean‐driven multidecadal sea surface temperature (SST) variations force the atmosphere to jointly set the pace of Atlantic multidecadal variability (AMV). We generate periodic low‐frequency Atlantic Meridional Overturning Circulation oscillations by implementing time‐dependent de...
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American Geophysical Union
2020
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Online Access: | https://dx.doi.org/10.48350/155704 https://boris.unibe.ch/155704/ |
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ftdatacite:10.48350/155704 2024-09-15T18:23:13+00:00 Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ... Oelsmann, J. Borchert, L. Hand, R. Baehr, J. Jungclaus, J. H. 2020 https://dx.doi.org/10.48350/155704 https://boris.unibe.ch/155704/ unknown American Geophysical Union open access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 910 Geography & travel Text ScholarlyArticle article-journal journal article 2020 ftdatacite https://doi.org/10.48350/155704 2024-09-02T10:17:31Z We investigate how ocean‐driven multidecadal sea surface temperature (SST) variations force the atmosphere to jointly set the pace of Atlantic multidecadal variability (AMV). We generate periodic low‐frequency Atlantic Meridional Overturning Circulation oscillations by implementing time‐dependent deep‐ocean‐density restoring in MPI‐ESM1.2 to explicitly identify variations driven by Atlantic Meridional Overturning Circulation without any perturbation at the ocean‐atmosphere interface. We show in a coupled experiment that ocean heat convergence variations generate positive SST anomalies, turbulent heat release, and low sea level pressure in the subpolar North Atlantic (NA) and vice versa. The SST signal is communicated to the tropical NA by wind‐evaporative‐SST feedbacks and to the North‐East Atlantic by enhanced northward atmospheric heat transport. Such atmospheric feedbacks and the characteristic AMV‐SST pattern are synchronized to the multidecadal time scale of ocean circulation changes by air‐sea heat ... Text North Atlantic North East Atlantic DataCite |
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910 Geography & travel |
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910 Geography & travel Oelsmann, J. Borchert, L. Hand, R. Baehr, J. Jungclaus, J. H. Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ... |
topic_facet |
910 Geography & travel |
description |
We investigate how ocean‐driven multidecadal sea surface temperature (SST) variations force the atmosphere to jointly set the pace of Atlantic multidecadal variability (AMV). We generate periodic low‐frequency Atlantic Meridional Overturning Circulation oscillations by implementing time‐dependent deep‐ocean‐density restoring in MPI‐ESM1.2 to explicitly identify variations driven by Atlantic Meridional Overturning Circulation without any perturbation at the ocean‐atmosphere interface. We show in a coupled experiment that ocean heat convergence variations generate positive SST anomalies, turbulent heat release, and low sea level pressure in the subpolar North Atlantic (NA) and vice versa. The SST signal is communicated to the tropical NA by wind‐evaporative‐SST feedbacks and to the North‐East Atlantic by enhanced northward atmospheric heat transport. Such atmospheric feedbacks and the characteristic AMV‐SST pattern are synchronized to the multidecadal time scale of ocean circulation changes by air‐sea heat ... |
format |
Text |
author |
Oelsmann, J. Borchert, L. Hand, R. Baehr, J. Jungclaus, J. H. |
author_facet |
Oelsmann, J. Borchert, L. Hand, R. Baehr, J. Jungclaus, J. H. |
author_sort |
Oelsmann, J. |
title |
Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ... |
title_short |
Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ... |
title_full |
Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ... |
title_fullStr |
Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ... |
title_full_unstemmed |
Linking Ocean Forcing and Atmospheric Interactions to Atlantic Multidecadal Variability in MPI‐ESM1.2 ... |
title_sort |
linking ocean forcing and atmospheric interactions to atlantic multidecadal variability in mpi‐esm1.2 ... |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://dx.doi.org/10.48350/155704 https://boris.unibe.ch/155704/ |
genre |
North Atlantic North East Atlantic |
genre_facet |
North Atlantic North East Atlantic |
op_rights |
open access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.48350/155704 |
_version_ |
1810463381097807872 |