Seasonality of the Meridional Overturning Circulation in the subpolar North Atlantic

dc.contributor.author Fu, Yao
dc.contributor.author Lozier, M Susan
dc.contributor.author Biló, Tiago Carrilho
dc.contributor.author Bower, Amy S.
dc.contributor.author Cunningham, Stuart A.
dc.contributor.author Cyr, Frédéric
dc.contributor.author de Jong, M. Femke
dc.contributor.author deYoung, Brad
dc.contributor.author Drysdale, Lewis
dc.contributor.author Fraser, Neil
dc.contributor.author Fried, Nora
dc.contributor.author Furey, Heather H.
dc.contributor.author Han, Guoqi
dc.contributor.author Handmann, Patricia
dc.contributor.author Holliday, N. Penny
dc.contributor.author Holte, James
dc.contributor.author Inall, Mark E.
dc.contributor.author Johns, William E.
dc.contributor.author Jones, Sam
dc.contributor.author Karstensen, Johannes
dc.contributor.author Li, Feili
dc.contributor.author Pacini, Astrid
dc.contributor.author Pickart, Robert S.
dc.contributor.author Rayner, Darren
dc.contributor.author Straneo, Fiammetta
dc.contributor.author Yashayaev, Igor
dc.date.accessioned 2024-02-07T20:30:56Z
dc.date.available 2024-02-07T20:30:56Z
dc.date.issued 2023-05-25
dc.description © The Author(s), 2023. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Fu, Y., Lozier, M., Biló, T., Bower, A., Cunningham, S., Cyr, F., de Jong, M., deYoung, B., Drysdale, L., Fraser, N., Fried, N., Furey, H., Han, G., Handmann, P., Holliday, N., Holte, J., Inall, M., Johns, W., Jones, S., Karstensen, J., Li, F., Pacini, A., Pickart, R. S., Rayner, D., Straneo, F., & Yashayaev, I. Seasonality of the Meridional Overturning Circulation in the subpolar North Atlantic. Communications Earth & Environment, 4(1), (2023): 181, https://doi.org/10.1038/s43247-023-00848-9.
dc.description.abstract Understanding the variability of the Atlantic Meridional Overturning Circulation is essential for better predictions of our changing climate. Here we present an updated time series (August 2014 to June 2020) from the Overturning in the Subpolar North Atlantic Program. The 6-year time series allows us to observe the seasonality of the subpolar overturning and meridional heat and freshwater transports. The overturning peaks in late spring and reaches a minimum in early winter, with a peak-to-trough range of 9.0 Sv. The overturning seasonal timing can be explained by winter transformation and the export of dense water, modulated by a seasonally varying Ekman transport. Furthermore, over 55% of the total meridional freshwater transport variability can be explained by its seasonality, largely owing to overturning dynamics. Our results provide the first observational analysis of seasonality in the subpolar North Atlantic overturning and highlight its important contribution to the total overturning variability observed to date.
dc.description.sponsorship OSNAP data were collected and made freely available by the OSNAP (Overturning in the Subpolar North Atlantic Program) project and all the national programs that contribute to it (www.o-snap.org). The moorings are part of the global OceanSITES network (http://www.oceansites.org/). Argo data were collected and made freely available by the International Argo Program and the national programs that contribute to it (http://www.argo.ucsd.edu, http://argo.jcommops.org). The Argo Program is part of the Global Ocean Observing System (https://doi.org/10.17882/42182). EN.4.2.2 data were obtained from https://www.metoffice.gov.uk/hadobs/en4/ and are © British Crown Copyright, Met Office, [2023], provided under a Non-Commercial Government Licence. We acknowledge funding from the Physical Oceanography Program of the U.S. National Science Foundation (OCE-1259398, OCE-1756231, OCE-1948335, OCE-1948482, OCE-1259618, OCE-1756363, OCE-1756361); the U.K. Natural Environment Research Council (NERC) National Capability programs CLASS (NE/R015953/1), and NERC grants UK-OSNAP (NE/K010875/1 and NE/K010875/2) and U.K. OSNAP Decade (NE/T00858X/1). Additional support was received from the European Union 7th Framework Program (FP7 2007–2013) under grant 308299 (NACLIM), the Horizon 2020 research and innovation program under grants 727852 (Blue-Action), 862626 (EuroSea). We also acknowledge support from the Royal Netherlands Institute for Sea Research and NWO grant 016.Vidi.189.130, the Surface Water and Ocean Topography-Canada (SWOT-C), Canadian Space Agency, the Aquatic Climate Change Adaptation Services Program (ACCASP), Fisheries and Oceans Canada, the Ocean Frontier Institute (OFI) and Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant. Support for the 53°N array by the RACE program of the German Ministry BMBF is acknowledged, as is the contribution from Fisheries and Oceans Canada’s Atlantic Zone Monitoring Program.
dc.identifier.citation Fu, Y., Lozier, M., Biló, T., Bower, A., Cunningham, S., Cyr, F., de Jong, M., deYoung, B., Drysdale, L., Fraser, N., Fried, N., Furey, H., Han, G., Handmann, P., Holliday, N., Holte, J., Inall, M., Johns, W., Jones, S., Karstensen, J., Li, F., Pacini, A., Pickart, R. S., Rayner, D., Straneo, F., & Yashayaev, I. (2023). Seasonality of the Meridional Overturning Circulation in the subpolar North Atlantic. Communications Earth & Environment, 4(1), 181.
dc.identifier.doi 10.1038/s43247-023-00848-9
dc.identifier.uri https://hdl.handle.net/1912/67593
dc.publisher Nature Research
dc.relation.uri https://doi.org/10.1038/s43247-023-00848-9
dc.rights Attribution 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ *
dc.title Seasonality of the Meridional Overturning Circulation in the subpolar North Atlantic
dc.type Article
dspace.entity.type Publication
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