{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Morales MS"],"funding":["Chilean Research Council","BNP Paribas | Fondation BNP Paribas","Consejo Nacional de Investigaciones Científicas y Técnicas","MINCyT | Agencia Nacional de Promoción Científica y Tecnológica","Russian State Assignment Project","Fondo Nacional de Desarrollo Cientifico, Tecnologico y de Innovacion Tecnologica, Perú","Inter-American Institute for Global Change Research","National Agency for Research and Development Chile","National Science Foundation"],"pagination":["16816-16823"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC7382209"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["117(29)"],"pubmed_abstract":["South American (SA) societies are highly vulnerable to droughts and pluvials, but lack of long-term climate observations severely limits our understanding of the global processes driving climatic variability in the region. The number and quality of SA climate-sensitive tree ring chronologies have significantly increased in recent decades, now providing a robust network of 286 records for characterizing hydroclimate variability since 1400 CE. We combine this network with a self-calibrated Palmer Drought Severity Index (scPDSI) dataset to derive the South American Drought Atlas (SADA) over the continent south of 12°S. The gridded annual reconstruction of austral summer scPDSI is the most spatially complete estimate of SA hydroclimate to date, and well matches past historical dry/wet events. "],"journal":["Proceedings of the National Academy of Sciences of the United States of America"],"pubmed_title":["Six hundred years of South American tree rings reveal an increase in severe hydroclimatic events since mid-20th century."],"pmcid":["PMC7382209"],"funding_grant_id":["AGS-1602581","0148-2019-0004","ANID/PAI/77190101","ANID/FONDAP/15110009","GEO-0452325","AGS-1805490","CRN03; CRN027","PICT2013-1880","PIP11220130100584","OISE-1743738","FONDECYT-BM-INC.INV 039-2019","1161381; 1201411; 1181956 and 11161061","THEMES project"],"pubmed_authors":["Gonzalez-Reyes A","Williams AP","Boninsegna JA","LeQuesne C","Ferrero ME","Morales MS","Bianchi LO","Flores F","Masiokas MH","Aliste D","Urrutia-Jalabert R","Lopez L","Couvreux F","Matskovsky V","Lister D","Lara A","Aguilera-Betti I","Smerdon JE","Velazquez G","Cook ER","Christie DA","Rodriguez-Caton M","Srur AM","Aravena JC","Rojas-Badilla M","Cuq E","Rojas F","Prieto MR","Villalba R","Munoz T","Alvarez C","Barichivich J","Luckman BH","Marcotti E","Munoz AA","Mundo IA","Harris I","Jones PD"],"additional_accession":[]},"is_claimable":false,"name":"Six hundred years of South American tree rings reveal an increase in severe hydroclimatic events since mid-20th century.","description":"South American (SA) societies are highly vulnerable to droughts and pluvials, but lack of long-term climate observations severely limits our understanding of the global processes driving climatic variability in the region. The number and quality of SA climate-sensitive tree ring chronologies have significantly increased in recent decades, now providing a robust network of 286 records for characterizing hydroclimate variability since 1400 CE. We combine this network with a self-calibrated Palmer Drought Severity Index (scPDSI) dataset to derive the South American Drought Atlas (SADA) over the continent south of 12°S. The gridded annual reconstruction of austral summer scPDSI is the most spatially complete estimate of SA hydroclimate to date, and well matches past historical dry/wet events. ","dates":{"release":"2020-01-01T00:00:00Z","publication":"2020 Jul","modification":"2025-04-05T15:19:08.053Z","creation":"2025-04-05T15:19:08.053Z"},"accession":"S-EPMC7382209","cross_references":{"pubmed":["32632003"],"doi":["10.1073/pnas.2002411117"]}}