Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments
Climate model simulations that restore SSTs in the North Atlantic have been used to explore the climate impacts of Atlantic Multidecadal Variability (AMV). However, despite simulations and observations exhibiting similar North Atlantic SST anomalies, experiments with active SST-restoring in the Trop...
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ftunivreading:oai:centaur.reading.ac.uk:110811 2024-09-09T19:54:25+00:00 Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments O'Reilly, Christopher H. Patterson, Matthew Robson, Jon Monerie, Paul-Arthur Hodson, Daniel Ruprich-Robert, Yohan 2023-02-22 text https://centaur.reading.ac.uk/110811/ https://centaur.reading.ac.uk/110811/2/Final_TypesetVersion.pdf https://centaur.reading.ac.uk/110811/1/AMV_DPCCpaper_vFINAL.pdf en eng Nature Publishing Group https://centaur.reading.ac.uk/110811/2/Final_TypesetVersion.pdf https://centaur.reading.ac.uk/110811/1/AMV_DPCCpaper_vFINAL.pdf O'Reilly, C. H. <https://centaur.reading.ac.uk/view/creators/90010842.html> orcid:0000-0002-8630-1650 , Patterson, M., Robson, J. <https://centaur.reading.ac.uk/view/creators/90002607.html> orcid:0000-0002-3467-018X , Monerie, P.-A. <https://centaur.reading.ac.uk/view/creators/90007727.html> orcid:0000-0002-5304-9559 , Hodson, D. <https://centaur.reading.ac.uk/view/creators/90000306.html> orcid:0000-0001-7159-6700 and Ruprich-Robert, Y. (2023) Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments. npj Climate and Atmospheric Science, 6. 14. ISSN 2397-3722 doi: https://doi.org/10.1038/s41612-023-00335-0 <https://doi.org/10.1038/s41612-023-00335-0> Article PeerReviewed 2023 ftunivreading https://doi.org/10.1038/s41612-023-00335-0 2024-06-18T14:20:05Z Climate model simulations that restore SSTs in the North Atlantic have been used to explore the climate impacts of Atlantic Multidecadal Variability (AMV). However, despite simulations and observations exhibiting similar North Atlantic SST anomalies, experiments with active SST-restoring in the Tropical North Atlantic exhibit strong positive surface heat-fluxes out of the ocean with warm SST anomalies, which is not replicated in other simulations or observations. The upward surface heat-fluxes that are systematically driven by the active SST-restoring in the Tropical North Atlantic are found to be crucial for generating a strong local precipitation response and the associated remote impact on the Pacific Walker circulation; these are both absent in other simulations. The results of this study strongly suggest that experiments employing SST-restoring (or prescribed SSTs) in the Tropical North Atlantic exaggerate the influence of the Atlantic on patterns of global climate anomalies and its role in recent multidecadal SST trends. Article in Journal/Newspaper North Atlantic CentAUR: Central Archive at the University of Reading Pacific npj Climate and Atmospheric Science 6 1 |
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CentAUR: Central Archive at the University of Reading |
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English |
description |
Climate model simulations that restore SSTs in the North Atlantic have been used to explore the climate impacts of Atlantic Multidecadal Variability (AMV). However, despite simulations and observations exhibiting similar North Atlantic SST anomalies, experiments with active SST-restoring in the Tropical North Atlantic exhibit strong positive surface heat-fluxes out of the ocean with warm SST anomalies, which is not replicated in other simulations or observations. The upward surface heat-fluxes that are systematically driven by the active SST-restoring in the Tropical North Atlantic are found to be crucial for generating a strong local precipitation response and the associated remote impact on the Pacific Walker circulation; these are both absent in other simulations. The results of this study strongly suggest that experiments employing SST-restoring (or prescribed SSTs) in the Tropical North Atlantic exaggerate the influence of the Atlantic on patterns of global climate anomalies and its role in recent multidecadal SST trends. |
format |
Article in Journal/Newspaper |
author |
O'Reilly, Christopher H. Patterson, Matthew Robson, Jon Monerie, Paul-Arthur Hodson, Daniel Ruprich-Robert, Yohan |
spellingShingle |
O'Reilly, Christopher H. Patterson, Matthew Robson, Jon Monerie, Paul-Arthur Hodson, Daniel Ruprich-Robert, Yohan Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments |
author_facet |
O'Reilly, Christopher H. Patterson, Matthew Robson, Jon Monerie, Paul-Arthur Hodson, Daniel Ruprich-Robert, Yohan |
author_sort |
O'Reilly, Christopher H. |
title |
Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments |
title_short |
Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments |
title_full |
Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments |
title_fullStr |
Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments |
title_full_unstemmed |
Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments |
title_sort |
challenges with interpreting the impact of atlantic multidecadal variability using sst-restoring experiments |
publisher |
Nature Publishing Group |
publishDate |
2023 |
url |
https://centaur.reading.ac.uk/110811/ https://centaur.reading.ac.uk/110811/2/Final_TypesetVersion.pdf https://centaur.reading.ac.uk/110811/1/AMV_DPCCpaper_vFINAL.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://centaur.reading.ac.uk/110811/2/Final_TypesetVersion.pdf https://centaur.reading.ac.uk/110811/1/AMV_DPCCpaper_vFINAL.pdf O'Reilly, C. H. <https://centaur.reading.ac.uk/view/creators/90010842.html> orcid:0000-0002-8630-1650 , Patterson, M., Robson, J. <https://centaur.reading.ac.uk/view/creators/90002607.html> orcid:0000-0002-3467-018X , Monerie, P.-A. <https://centaur.reading.ac.uk/view/creators/90007727.html> orcid:0000-0002-5304-9559 , Hodson, D. <https://centaur.reading.ac.uk/view/creators/90000306.html> orcid:0000-0001-7159-6700 and Ruprich-Robert, Y. (2023) Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments. npj Climate and Atmospheric Science, 6. 14. ISSN 2397-3722 doi: https://doi.org/10.1038/s41612-023-00335-0 <https://doi.org/10.1038/s41612-023-00335-0> |
op_doi |
https://doi.org/10.1038/s41612-023-00335-0 |
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npj Climate and Atmospheric Science |
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6 |
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1 |
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1809923813517819904 |