title: 3800 Years of quantitative precipitation reconstruction from the Northwest Yucatan Peninsula.
abstract: Precipitation over the last 3800 years has been reconstructed using modern pollen calibration and precipitation data. A transfer function was then performed via the linear method of partial least squares. By calculating precipitation anomalies, it is estimated that precipitation deficits were greater than surpluses, reaching 21% and <9%, respectively. The period from 50 BC to 800 AD was the driest of the record. The drought related to the abandonment of the Maya Preclassic period featured a 21% reduction in precipitation, while the drought of the Maya collapse (800 to 860 AD) featured a reduction of 18%. The Medieval Climatic Anomaly was a period of positive phases (3.8-7.6%). The Little Ice Age was a period of climatic variability, with reductions in precipitation but without deficits.
authors.affiliation: El Colegio de la Frontera Sur, Unidad Chetumal, Herbario, Chetumal, Quintana Roo, México.
authors.forename: Alicia
authors.initials: A
authors.lastname: Carrillo-Bastos
authors.affiliation: El Colegio de la Frontera Sur, Unidad Chetumal, Herbario, Chetumal, Quintana Roo, México.
authors.forename: Gerald A
authors.initials: GA
authors.lastname: Islebe
authors.affiliation: El Colegio de la Frontera Sur, Unidad Chetumal, Herbario, Chetumal, Quintana Roo, México.
authors.forename: Nuria
authors.initials: N
authors.lastname: Torrescano-Valle
mesh_terms: D057231:Climate Change / Q000266:history* / Q000706:statistics & numerical data*; D005580:Fossils; D049690:History, Ancient; D016018:Least-Squares Analysis; D008800:Mexico; D008962:Models, Theoretical; D011058:Pollen; D011891:Rain