Irrigation in the North China Plain regulates the diurnal cycle of precipitation and regional water cycle

Irrigation in the North China Plain regulates the diurnal cycle of precipitation and regional water cycle | 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 Irrigation in the North China Plain regulates the diurnal cycle of precipitation and regional water cycle yuanyuan song, Jiangfeng Wei, Haoqiu Cheng, Beilei Zan This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3821883/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 10 Apr, 2024 Read the published version in Climate Dynamics → Version 1 posted 4 You are reading this latest preprint version Abstract Irrigation, a significant human activity, impacts regional water cycles and climate. The effect of irrigation on the diurnal cycle of precipitation (DCP) remains ambiguous. In this study, we investigate irrigation's effects on the DCP and assess its contribution to precipitation in North China, utilizing a regional model coupled with a water vapor tracing scheme. Our findings indicate that, during the afternoon, irrigation in the North China Plain (NCP) generates a cooling effect, thereby intensifying the thermal contrast between the mountains and adjacent plain and strengthening the mountain-plains solenoid. As a result, there is an increase in the amount and frequency of afternoon precipitation in the northwestern mountains, while the southeastern plains experience a decrease. The cooling and moistening effects of irrigation inhibit the development of the planetary boundary layer and make it a challenge for air to reach the lifting condensation level, which impedes cloud and precipitation formation, thus delaying the peak of afternoon precipitation. Although irrigation's direct contribution to total precipitation does not exceed 6%, it is responsible for approximately 30% of the total precipitation changes induced by irrigation. The precipitation recycling ratio in the NCP is elevated under irrigation, especially in the mountains, likely due to enhanced moisture and altered local circulations. When the soil moisture is dry, irrigation's positive impact on precipitation is more pronounced, whereas in wet soil conditions, this positive effect diminishes and may even result in reduced precipitation. Irrigation Diurnal cycle of precipitation Water vapor tracing North China Land-atmosphere coupling Full Text Cite Share Download PDF Status: Published Journal Publication published 10 Apr, 2024 Read the published version in Climate Dynamics → Version 1 posted Reviewers agreed at journal 04 Jan, 2024 Reviewers invited by journal 04 Jan, 2024 Editor assigned by journal 01 Jan, 2024 First submitted to journal 30 Dec, 2023 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. 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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-3821883","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":265341292,"identity":"23928a4a-92ad-4f06-9500-a18e89124a76","order_by":0,"name":"yuanyuan song","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABBklEQVRIie3PMUsDMRTA8VcCueVJ1hwV/AqBglQ8mq+ScJBRlIIUBDkopMt9gAp+mBwBp+JcuOVEcHJQCsXBwVzrpnd1dMh/eEN4P3gBiMX+YYwQ55TgSJNCNwB898r7SLqw2jWX2TFD9yzaZTxExGo1qpo3k6VL/bLbPEhgrUQ4zKNwubm5smMpgVQ1wuSiSwyWSn2TB1PfWa5LoPk5Qj7tIoQrtydVaeojyxUCng4RnC46COW62BPPttNAJALb9hJED4EYTC0YEsigBKS9hCe2JRmycP4QH8NfPB2d3Yu8k0jPNu8fn1zSk0Zv8PpWJov50/p1Nukkv0TaIf6+H4vFYrGffQEfyFUp6dr9bgAAAABJRU5ErkJggg==","orcid":"","institution":"Nanjing University of Information Science and Technology","correspondingAuthor":true,"prefix":"","firstName":"yuanyuan","middleName":"","lastName":"song","suffix":""},{"id":265341293,"identity":"11425c1c-62ef-4c81-ace6-24a63f225839","order_by":1,"name":"Jiangfeng Wei","email":"","orcid":"https://orcid.org/0000-0001-8981-8674","institution":"Nanjing University of Information Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Jiangfeng","middleName":"","lastName":"Wei","suffix":""},{"id":265341294,"identity":"14670337-b53d-4485-91e0-f5c1d66f1d48","order_by":2,"name":"Haoqiu Cheng","email":"","orcid":"","institution":"Nanjing University of Information Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Haoqiu","middleName":"","lastName":"Cheng","suffix":""},{"id":265341295,"identity":"f70ef2cd-290a-42ca-acc1-bd1983768349","order_by":3,"name":"Beilei Zan","email":"","orcid":"","institution":"Nanjing University of Information Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Beilei","middleName":"","lastName":"Zan","suffix":""}],"badges":[],"createdAt":"2023-12-29 16:34:35","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3821883/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3821883/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s00382-024-07208-z","type":"published","date":"2024-04-10T15:02:08+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":54712802,"identity":"d2a71f38-42a4-4a29-b32a-51dfdf3041df","added_by":"auto","created_at":"2024-04-15 15:12:55","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1971487,"visible":true,"origin":"","legend":"","description":"","filename":"paperirrigation.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3821883/v1_covered_46f57933-e463-4cda-9910-1d51434ed7dd.pdf"}],"financialInterests":"","formattedTitle":"Irrigation in the North China Plain regulates the diurnal cycle of precipitation and regional water cycle","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":true,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"climate-dynamics","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"cldy","sideBox":"Learn more about [Climate Dynamics](https://www.springer.com/journal/382)","snPcode":"382","submissionUrl":"https://submission.nature.com/new-submission/382/3","title":"Climate Dynamics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Irrigation, Diurnal cycle of precipitation, Water vapor tracing, North China, Land-atmosphere coupling","lastPublishedDoi":"10.21203/rs.3.rs-3821883/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3821883/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIrrigation, a significant human activity, impacts regional water cycles and climate. 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