Unravelling the mystery: The key role of tides in strengthening AMOC during the Bølling-Allerød epoch

Unravelling the mystery: The key role of tides in strengthening AMOC during the Bølling-Allerød epoch | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Unravelling the mystery: The key role of tides in strengthening AMOC during the Bølling-Allerød epoch Yugeng Chen, Pengyang Song, Yuchen Sun, Xianyao Chen, Gerrit Lohmann This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5586651/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The Bølling-Allerød (BA) period, characterized by rapid climate warming, provides a unique opportunity to study the dynamics of the Atlantic Meridional Overturning Circulation (AMOC). Despite expectations that the AMOC would weaken due to substantial meltwater input from Northern Hemisphere ice sheets, proxy data evidence suggests it unexpectedly strengthened during this transition. In this study, we examine the previously unconsidered role of tides during the BA period through a series of ocean circulation model simulations. Our findings indicate that enhanced tidal mixing during the BA significantly contributed to the rapid amplification of the AMOC, also increasing its resilience to freshwater inputs from deglaciation. This research provides a novel explanation for the AMOC's rapid amplification and resilience during the BA period, emphasizing the critical role of tides in enhancing our understanding of abrupt climate transitions and future climate change. Earth and environmental sciences/Climate sciences/Palaeoclimate Earth and environmental sciences/Ocean sciences/Physical oceanography Full Text Additional Declarations There is NO Competing Interest. Supplementary Files Supplementary.pdf Unravelling the mystery: The key role of tides in strengthening AMOC during the Bølling-Allerød epoch Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5586651","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":397448103,"identity":"9dc9e7b0-9503-4780-b996-6d25bc27c1d1","order_by":0,"name":"Yugeng 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