AMOC decline and recovery in a warmer climate

This study presents novel insight into the mechanisms of Atlantic Meridional Overturning Circulation (AMOC) reduction and its recovery under a warmer climate scenario. An one-thousand-year-long numerical simulation of a global coupled ocean–ice–atmosphere climate model, subjected to a stationary atm...

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Bibliographic Details
Published in:Scientific Reports
Main Authors: Nobre, Paulo, Veiga, Sandro F., Giarolla, Emanuel, Marquez, André L., da Silva, Manoel B., Capistrano, Vinícius B., Malagutti, Marta, Fernandez, Julio P. R., Soares, Helena C., Bottino, Marcus J., Kubota, Paulo Y., Figueroa, Silvio N., Bonatti, José P., Sampaio, Gilvan, Casagrande, Fernanda, Costa, Mabel C., Nobre, Carlos A.
Format: Text
Language:English
Published: Nature Publishing Group UK 2023
Subjects:
Article
Arctic
North Atlantic
Sea ice
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10517999/
http://www.ncbi.nlm.nih.gov/pubmed/37741891
https://doi.org/10.1038/s41598-023-43143-5
Description
Summary:This study presents novel insight into the mechanisms of Atlantic Meridional Overturning Circulation (AMOC) reduction and its recovery under a warmer climate scenario. An one-thousand-year-long numerical simulation of a global coupled ocean–ice–atmosphere climate model, subjected to a stationary atmospheric radiative forcing, depict a coherent picture of the Arctic sea ice melting as a trigger for the initial AMOC reduction, along with decreases in the northward fluxes of salt and heat. Further atmospheric-driven ocean processes contribute to an erosion of the stable stratification of the fresher, yet colder waters in the surface layers of the North Atlantic, contributing to the recovery of a permanently altered AMOC.

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