Oxygen isotopes in tree rings track neotropical climate dynamics

Oxygen isotopes in tree rings track neotropical climate dynamics | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 2 December 2025 V1 Latest version Share on Oxygen isotopes in tree rings track neotropical climate dynamics Authors : Ana Isabel González Méndez 0000-0001-6775-3259 [email protected] , Kevin John Anchukaitis 0000-0002-8509-8080 , Diego Pons , Kiyomi Morino , Talia G Anderson , Soumaya Belmecheri 0000-0003-1258-2741 , and Laia Andreu-Hayles 0000-0003-4185-681X Authors Info & Affiliations https://doi.org/10.22541/au.176463563.37729128/v1 204 views 103 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Central America faces increasing risks from climate variability and extreme weather events. Limited observational records and model biases have constrained our ability to understand the ocean–atmosphere dynamics that influence precipitation variability in the region over longer timescales. Paleoclimate proxies, including the stable oxygen isotope ratio of the cellulose of tropical trees, can extend the climate record, allowing recent trends and variability to be evaluated in a long-term context and improving our understanding of forced and unforced variability of the climate system. Here, we present a new multidecadal record of δ18O from Abies guatemalensis from Guatemala and Honduras. We show that this proxy records boreal summer rainfall and is tightly coupled to neotropical ocean–atmosphere dynamics. This precisely dated, high-resolution proxy can be used for multicentury hydroclimate reconstructions of the Intertropical Convergence Zone dynamics and its interactions with the eastern Pacific Ocean and Caribbean Sea. Supplementary Material File (1055769_0_merged_1763435960.pdf) Download 20.49 MB File (gonzalez-mendez_etal_2025_main.pdf) Download 20.49 MB File (gonzalez-mendez_etal_2025_supp.pdf) Download 11.94 MB Information & Authors Information Version history V1 Version 1 02 December 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords central america climate variability dendrochronology dynamics paleoclimate stable isotopes Authors Affiliations Ana Isabel González Méndez 0000-0001-6775-3259 [email protected] The University of Arizona View all articles by this author Kevin John Anchukaitis 0000-0002-8509-8080 University of Arizona View all articles by this author Diego Pons University of Denver View all articles by this author Kiyomi Morino University of Arizona View all articles by this author Talia G Anderson University of Minnesota Twin Cities View all articles by this author Soumaya Belmecheri 0000-0003-1258-2741 University of Arizona View all articles by this author Laia Andreu-Hayles 0000-0003-4185-681X Columbia University View all articles by this author Metrics & Citations Metrics Article Usage 204 views 103 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Ana Isabel González Méndez, Kevin John Anchukaitis, Diego Pons, et al. Oxygen isotopes in tree rings track neotropical climate dynamics. Authorea . 02 December 2025. DOI: https://doi.org/10.22541/au.176463563.37729128/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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