LTRR | Laboratory of Tree-Ring Research

NOW OPEN!

The Tree-Ring Lab is pleased to announce that we are resuming tours.

Please visit https://ltrr.arizona.edu/docents for additional information.

Established by the pioneer of dendrochronology.
A.E. Douglass, originator of the science of tree-ring dating, founded the Laboratory of Tree-Ring Research in 1937.
https://ltrr.arizona.edu/about/history
Housed in a custom facility.
A building constructed in 2013 provides lab and office space, augmented by a building recently renovated as a wood sample archive.
https://ltrr.arizona.edu/building
Pursuing interdisciplinary research.
Dendrochronology helps reconstruct environmental change, and unravel processes in ecosystems and human societies; researchers in many parts of the world collaborate with the Laboratory of Tree-Ring Research.
https://ltrr.arizona.edu/research
Hosting an on-line seminar series.
The Tree Ring Talks seminar series is now available on Zoom.
Upcoming talks ≫

Established by the pioneer of dendrochronology.
Housed in a custom facility.
Pursuing interdisciplinary research.
Hosting an on-line seminar series.

News

The slab of bristlecone pine wood, showing the ring pattern on the polished top surface

Finding the Thera and Aniakchak II volcanic eruptions in tree rings and ice cores

Friday, June 10, 2022

A new publication in PNAS Nexus led by LTRR's Charlotte Pearson combines ice-cores, tree-rings, radiocarbon and archaeology to narrow in on a date for the Thera eruption and confirm Aniakchak II (1628 BCE) as one of the highest sulfate eruptions in the last 4,000 years.

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Research Experience for Teachers

Sunday, March 6, 2022

Accepting applications now!

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Agnese N. Haury Visiting Scholar & Trainee Fellowship

Tuesday, February 1, 2022

Accepting applications for the Agnese N. Haury Visiting Scholar & Trainee Fellowship now!

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The origin of tree-ring reconstructed summer cooling in Northern Europe during the 18th century eruption of Laki'

Monday, January 31, 2022

Julie Edwards and other have published a new paper on "The origin of tree-ring reconstructed summer cooling in Northern Europe during the 18th century eruption of Laki" in the AGU journal Paleoceanography and Paleoclimatology.

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