Synergistic Dynamics of Large-scale Three-dimensional Circulations in Two Types of East Asian Cold Events

Synergistic Dynamics of Large-scale Three-dimensional Circulations in Two Types of East Asian Cold Events | 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 Synergistic Dynamics of Large-scale Three-dimensional Circulations in Two Types of East Asian Cold Events wenxin Zhang, Shujuan Hu, Haihong Yang, Yuchen Wu, Kai Wang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6105062/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 Traditional studies on East Asian cold events have predominantly focused on the impacts of large-scale horizontal circulation characteristics. Differently, this paper uses the three-pattern decomposition of the global atmospheric circulation (3P-DGAC), classifying East Asian cold events into wave-train type and blocking type based on their dominant three-dimensional (3D) circulation patterns. The wave-train type is related to an upper-tropospheric Rossby wave train that originates in the North Atlantic and propagates eastward across the Eurasian continent. While the blocking type is associated with a subpolar blocking that originates in the North Pacific and retrogresses westward into the eastern Siberia. Corresponding to the persistent widespread anticyclonic circulation anomaly of the blocking type, the surface Siberia High (SH) and subsequent cooling tend to be more intense and last longer. Before the cold peak, both types exhibit a positive meridional circulation anomaly over the mid-latitude East Asia (EA), and a negative zonal circulation anomaly over the northern EA, which together strengthen the SH and facilitate the transportation of cold air. Especially, the local Brewer-Dobson (BD) circulation in the blocking type developed vigorously, triggering the negative phase of the stratospheric Arctic Oscillation to propagate downward and influence tropospheric weather. This study clarifies the synergistic dynamics of large-scale 3D circulations, emphasizing the potential of vertical circulation patterns to improve cold event predictability and providing new insights into the dynamics of East Asian cold events. East Asian cold events. Three-pattern decomposition of global atmospheric circulation. Large-scale horizontal circulation. Local meridional circulation. Local zonal circulation Full Text Supplementary Files Supplementarymaterial.docx 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-6105062","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":421757097,"identity":"a0736147-4510-47f2-9dda-72a946ee5948","order_by":0,"name":"wenxin Zhang","email":"","orcid":"","institution":"Lanzhou University","correspondingAuthor":false,"prefix":"","firstName":"wenxin","middleName":"","lastName":"Zhang","suffix":""},{"id":421757098,"identity":"3ae5941e-96f0-4d54-b64d-3be82d8b6805","order_by":1,"name":"Shujuan Hu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAy0lEQVRIiWNgGAWjYBACAwYGNgYGHgY5PjCXjQQtxmwkamFgSGwjWou5RPqzxzwyh9Pb+M8YMHwoO8zAP7sBvxbLGTnmxjw8h3PbGM4YMM44d5hB4s4BAg67kcMmDdbC2GPAzNt2mMFAIoGQlvRnIC3pbMw8Bsx/idOSYAbSksDGBtTCSJSWM2/MJOfwpBu28bAVHOw5l84jcYOQluPpzyTe9ljL8/Mf3vjgR5m1HP8MAlrAgLEHQh9gAMUqceAHkepGwSgYBaNgZAIA7dQ5dOAlAc4AAAAASUVORK5CYII=","orcid":"https://orcid.org/0009-0002-0474-7921","institution":"Lanzhou University","correspondingAuthor":true,"prefix":"","firstName":"Shujuan","middleName":"","lastName":"Hu","suffix":""},{"id":421757099,"identity":"9c2b2587-a7a1-47dd-8f2e-d3f0c9a11712","order_by":2,"name":"Haihong Yang","email":"","orcid":"","institution":"Lanzhou University","correspondingAuthor":false,"prefix":"","firstName":"Haihong","middleName":"","lastName":"Yang","suffix":""},{"id":421757100,"identity":"ad398c31-bb61-47e7-862f-94cf914d0b1e","order_by":3,"name":"Yuchen Wu","email":"","orcid":"","institution":"Lanzhou University","correspondingAuthor":false,"prefix":"","firstName":"Yuchen","middleName":"","lastName":"Wu","suffix":""},{"id":421757101,"identity":"2c715954-4930-44b2-89d8-79e6f9d789ed","order_by":4,"name":"Kai Wang","email":"","orcid":"","institution":"Lanzhou University","correspondingAuthor":false,"prefix":"","firstName":"Kai","middleName":"","lastName":"Wang","suffix":""}],"badges":[],"createdAt":"2025-02-25 12:17:24","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6105062/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6105062/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":80079365,"identity":"27641065-568a-4446-b020-848253abc63b","added_by":"auto","created_at":"2025-04-07 15:29:14","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2826446,"visible":true,"origin":"","legend":"","description":"","filename":"ManuscriptCD.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6105062/v1_covered_88b81dc7-bd3b-45d1-81d3-5ec0259c3a6f.pdf"},{"id":77586870,"identity":"e619ffd8-1178-4d50-ac7c-94d73c0d1134","added_by":"auto","created_at":"2025-03-03 10:42:53","extension":"docx","order_by":17,"title":"","display":"","copyAsset":false,"role":"supplement","size":2071328,"visible":true,"origin":"","legend":"","description":"","filename":"Supplementarymaterial.docx","url":"https://assets-eu.researchsquare.com/files/rs-6105062/v1/326616f94e4c97780db92077.docx"}],"financialInterests":"","formattedTitle":"Synergistic Dynamics of Large-scale Three-dimensional Circulations in Two Types of East Asian Cold Events","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"East Asian cold events. Three-pattern decomposition of global atmospheric circulation. Large-scale horizontal circulation. Local meridional circulation. Local zonal circulation","lastPublishedDoi":"10.21203/rs.3.rs-6105062/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6105062/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eTraditional studies on East Asian cold events have predominantly focused on the impacts of large-scale horizontal circulation characteristics. Differently, this paper uses the three-pattern decomposition of the global atmospheric circulation (3P-DGAC), classifying East Asian cold events into wave-train type and blocking type based on their dominant three-dimensional (3D) circulation patterns. The wave-train type is related to an upper-tropospheric Rossby wave train that originates in the North Atlantic and propagates eastward across the Eurasian continent. 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