Journal article
Challenges with interpreting the impact of Atlantic Multidecadal Variability using SST-restoring experiments
- Abstract:
- 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.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 4.2MB, Terms of use)
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- Publisher copy:
- 10.1038/s41612-023-00335-0
Authors
- Publisher:
- Springer Nature
- Journal:
- npj Climate and Atmospheric Science More from this journal
- Volume:
- 6
- Issue:
- 1
- Article number:
- 14
- Publication date:
- 2023-02-22
- Acceptance date:
- 2023-02-08
- DOI:
- EISSN:
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2397-3722
- Language:
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English
- Keywords:
- Pubs id:
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1332449
- Local pid:
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pubs:1332449
- Deposit date:
-
2023-06-08
Terms of use
- Copyright holder:
- O’Reilly et al
- Copyright date:
- 2023
- Rights statement:
- ©2023 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
- Licence:
- CC Attribution (CC BY)
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