Air and surface temperatures differently drive terrestrial carbon and water cycles in the high latitudes

Air and surface temperatures differently drive terrestrial carbon and water cycles in the high latitudes | 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 Air and surface temperatures differently drive terrestrial carbon and water cycles in the high latitudes Jing TANG, Shouzhi Chen, David Belda, Riikka Rinnan, Christian Körner, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4091947/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 High-latitude vegetation can experience much higher surface temperatures (T surf , at radiative equilibrium) than the ambient air temperature (T air ). In snow-free seasons, T surf is closely linked to plant physiological and biochemical processes. We drove the dynamic ecosystem model LPJ-GUESS with reanalysis data ERA5-land T surf and 2-m T air to understand regional responses to these two temperatures. We show that plant growth in the tundra is stimulated by warmer T surf in the summer months, but in the boreal forests, colder T surf in the non-summer months constrains leaf development and enzyme activity for the growing season. T surf drives higher primary productivity of tundra plant individuals, but in the boreal forests, productivity is co-influenced by less productive individuals and compensatory changes in vegetation structure (coverage and density). This study demonstrates the importance of forcing temperature in simulating high-latitude ecosystem processes and calls for using correct plant-experienced temperatures to reduce uncertainties in estimating responses and feedback to the climate. Earth and environmental sciences/Ecology/Ecological modelling Biological sciences/Ecology/Ecosystem ecology plant-experienced temperature leaf energy balance primary productivity vegetation structure Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryInformation.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-4091947","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":282328892,"identity":"65118cc2-7e07-43a7-8434-8543d15778da","order_by":0,"name":"Jing 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