Strong La Niña Induce an Extreme High-Salinity of Dense Shelf Water in the Ross Sea in 2012

Strong La Niña Induce an Extreme High-Salinity of Dense Shelf Water in the Ross Sea in 2012 | 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 Research Article Strong La Niña Induce an Extreme High-Salinity of Dense Shelf Water in the Ross Sea in 2012 Mengting Zhuo, Yuhong Zhang, Yu Hong, Lianyi Zhang, Yan Du This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7699097/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 Antarctic Bottom Water (AABW), formed from the Dense Shelf Water (DSW), plays a crucial role in global ocean circulation and climate. Based on Antarctic profile datasets, this study found that the salinity of the DSW in the Ross Sea was exceptionally high in 2012. Further analysis revealed that this highsalinity event was associated with anomalous regional winds and sea ice transport, influenced by La Niña. The strong La Niña event from November 2010 to February 2011 strengthened the Amundsen Sea Low (ASL) and caused its eastward shift. This shift led to enhanced southeasterly offshore winds over the RossAmundsen Sea Connection region, which reduced sea ice transport into the Ross Sea. The resulting decrease in sea ice input increased local sea ice production from March to October 2012, contributing to the highsalinity event through intensified brine rejection. This study highlights the influence of tropical climate variability on the DSW salinity and its impacts on the AABW under climate change. Dense Shelf Water La Niña Antarctic Bottom Water Amundsen Sea Low Full Text Supplementary Files ZhuoRossDSWsupportinginformation.pdf 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-7699097","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":524183664,"identity":"0e8e2d83-52cf-40ed-9ee3-109363fd84d8","order_by":0,"name":"Mengting Zhuo","email":"","orcid":"","institution":"South China Sea Institute of Oceanology Chinese Academy of Sciences","correspondingAuthor":false,"prefix":"","firstName":"Mengting","middleName":"","lastName":"Zhuo","suffix":""},{"id":524183665,"identity":"cb7e8b72-e668-4fdb-ac84-30b96148e18f","order_by":1,"name":"Yuhong Zhang","email":"","orcid":"","institution":"South China Sea Institute 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