Impacts of aerosol concentration on precipitation pattern of tropical cyclones in South China area

Impacts of aerosol concentration on precipitation pattern of tropical cyclones in South China area | 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 Impacts of aerosol concentration on precipitation pattern of tropical cyclones in South China area Xiaoming Shi, Ho Yi Lydia Mak, Yi Zhang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4422268/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 Previous studies have discovered that an increase in aerosol concentration could affect the development of precipitation and tropical cyclones. However, with increasing efforts to mitigate climate change, the amount of aerosols in the atmosphere is expected to decrease in the future. This study aims at understanding how such a reduction in aerosol number concentration could affect the precipitation pattern of tropical cyclones through case studies of Typhoon Haikui and Koinu. The Thompson aerosol-aware microphysics scheme in the Weather Research and Forecst(WRF) model is used, and the water-friendly aerosol number concentration is reduced by a factor of 100. For both tropical cyclones, a reduction in aerosol results in consistent expansion of precipitation area due to the enhanced warm rain process. However, the mean precipitation intensity of Koinu decreases while that of Haikui increases, depending on whether warm-rain or ice-phase dominates and whether upper-level convection is altered. Earth and environmental sciences/Climate sciences/Atmospheric science/Atmospheric dynamics Earth and environmental sciences/Climate sciences Full Text Additional Declarations (Not answered) Supplementary Files TCAerosolSI.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-4422268","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":307029135,"identity":"8b39a8b1-d317-471a-8a3e-cfe3dfd28b8d","order_by":0,"name":"Xiaoming Shi","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAnUlEQVRIiWNgGAWjYDACCcYGBoYKEIuHmRQtZ4AaSNACxIxtpGiRn93cJnVz3mF7ewbewwZEaTG4c7DZOHfb4cQeBr7kBOK0SCQ2PgZqSQA6zPgAcQ6bkdhwOHfOYXvitTDcANnScJixB6iFSIfdSGw2zjmWnthzmMeYOO/Lz0h/Jp1TY23P3t5jLEGcw+CA2IgcBaNgFIyCUUAEAADZCSofZ2A0kwAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0002-5329-7851","institution":"Hong Kong University of Science and Technology","correspondingAuthor":true,"prefix":"","firstName":"Xiaoming","middleName":"","lastName":"Shi","suffix":""},{"id":307029136,"identity":"0c2e7f38-8a90-4fb0-b1f9-32faf6855af2","order_by":1,"name":"Ho Yi Lydia Mak","email":"","orcid":"https://orcid.org/0009-0008-7335-5837","institution":"Hong Kong University of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Ho","middleName":"Yi Lydia","lastName":"Mak","suffix":""},{"id":307029137,"identity":"2b4270f8-fc60-489f-9bd1-dcdaeca0b645","order_by":2,"name":"Yi Zhang","email":"","orcid":"","institution":"University of Toronto","correspondingAuthor":false,"prefix":"","firstName":"Yi","middleName":"","lastName":"Zhang","suffix":""}],"badges":[],"createdAt":"2024-05-15 03:25:06","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4422268/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4422268/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":66561468,"identity":"5c7f5da1-6b1a-4a1f-beed-89180ab53e9b","added_by":"auto","created_at":"2024-10-14 10:18:33","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":490485,"visible":true,"origin":"","legend":"","description":"","filename":"TCAerosol.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4422268/v1_covered_a8b1b045-5c9d-4a96-905c-3da4fa70b7a5.pdf"},{"id":57885103,"identity":"6199befb-1763-4f68-9f25-12f198b43f57","added_by":"auto","created_at":"2024-06-07 04:34:39","extension":"pdf","order_by":2,"title":"","display":"","copyAsset":false,"role":"supplement","size":518756,"visible":true,"origin":"","legend":"","description":"","filename":"TCAerosolSI.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4422268/v1/3fd4ea304de45c7680b1206d.pdf"}],"financialInterests":"(Not answered)","formattedTitle":"Impacts of aerosol concentration on precipitation pattern of tropical cyclones in South China area","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":"","lastPublishedDoi":"10.21203/rs.3.rs-4422268/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4422268/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"Previous studies have discovered that an increase in aerosol concentration could affect the development of precipitation and tropical cyclones. 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