THOMAS W. SWETNAM REGENTS PROFESSOR OF DENDROCHRONOLOGY, EMERITUS
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Tree Rings,
​Forest Ecology, Fire
& Human History

Welcome

I study natural and cultural disturbances of forest ecosystems across a broad range of temporal and spatial scales. My primary tool is dendrochronology — the use of tree rings to reconstruct and evaluate variations in past and present environments. Combining tree-ring records with other natural archives and documentary sources, I reconstruct the histories of fire, insect outbreaks, climate, and human land use. With collaborators, I am currently studying disturbance and climate histories in western North America, the Jemez Mountains of New Mexico, and the Central Plateau of Siberia.​

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My new book published by UNM Press in 2025

Laboratory of
​Tree-Ring Research
​University of Arizona

&
Jemez Mountains Tree-Ring Lab

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Email:
​[email protected]


Blusky:
@firescar.bsky.social

Bryant Banister Tree-Ring Bldg.
1215 E. Lowell Street
Tucson, Arizona 85721-0058


​Last updated May 2026

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  • Home
  • Past & Current Projects
  • Publications
  • Misc. Links
  • Jemez Valley History Blog