3800 Years of quantitative precipitation reconstruction from the Northwest Yucatan Peninsula.
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- Record sourced from PubMed, PMID 24391940.
- Also identified by DOI 10.1371/journal.pone.0084333 and PMC identifier PMC3877294.
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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.