Forty years of dendrochronological collecting in the Eastern Mediterranean have until now been stymied by the lack of suitable timbers from the 500 years on either side of the Year 1. Roman buildings have plenty of beam-beds but no preserved timbers. Recently an enormous $5 billion metro/subway project through downtown Istanbul/Constantinople has provided the missing link: some 4000 oak pilings from a long series of Byzantine and Late Roman docks and other structures. Three long chronologies, adding up to 1441 years so far, have enabled us to fill a number of gaps and to build a continuo
Public Lecture Event
Introduction to Laboratory of Tree-Ring Research-sponsored Special Sessions • Dr. Steve Leavitt
Two millennial-length hydroclimatic proxy records from close to the centers of action of the winter North Atlantic Oscillation (NAO) indicate that the Medieval Climate Anomaly (MCA) was characterized by a pervasive positive phase of the NAO. Supplementary Proxy Surrogate reconstructions based on climate model results and proxy data indicate a clear shift to weaker NAO conditions into the Little Ice Age (LIA). Multidecadal NAO variability results in synoptic-scale shifts in surface pressure, wind fields, and precipitation.
A Gathering for Tree-ring Lab Faculty, Staff, Students, and Friends.
Food and Refreshments provided (breakfast & lunch).
Come learn about the exciting research being conducted at the Laboratory of Tree-Ring Research. Short presentations by faculty, students, and staff will keep you current on research involving tree-ring data in archaeology, ecology, climate, pollution, hydrology, and all aspects of Dendrochronology.
In climate change research, tree ring data can be used to reconstruct regional- to global-scale climate variability, but also to investigate the atmospheric circulation patterns driving this variability. Furthermore, tree ring records provide an important tool to quantify the impacts of climatic variability and change on terrestrial ecosystem dynamics.