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Schedule your visit today.

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 includes lab, office and archive space
    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

A cross section from a tree that drowned when a forest was carried into Lake Washington as part of a landslide.

Tree rings reveal a new kind of earthquake threat to the Pacific Northwest

Wednesday, September 27, 2023

New paper by LTRR lead author Bryan Black

Read more
AGU web page for Willi Dansgaard Award with Kevin Anchukaitis portrait inset

Kevin Anchukaitis receives Willi Dansgaard Award

Friday, September 15, 2023

The AGU honors Kevin Anchukaitis with the 2023 Willi Dansgaard Award.

Read more
Sediment core tube held in a small boat on a lake.

Has the Earth been warming or cooling over the past few thousand years?

Thursday, February 23, 2023

LTRR postdoc Ellie Broadman is co-author of an article reviewing the trends in global temperature over the last few thousand years.

Read more

Music from Tree Rings

Monday, December 19, 2022

The Arizona Daily Star newspaper's front page lead article was on the musical collaborative project featuring Margaret Evans and Kelly Heilman of the LTRR.

Read more

Dr. Charlotte Pearson Receives National Science Foundation MRI Grant for Groundbreaking Mini Carbon Dating System

Tuesday, October 18, 2022

Dr. Charlotte Pearson Receives National Science Foundation MRI Grant for Groundbreaking Mini Carbon Dating System

Read more

Valerie Trouet named Scientific Director of the new Belgian Center for Climate Expertise

Wednesday, September 28, 2022

Valerie Trouet has been named the Scientific Director of the new Belgian Center for Climate Expertise.

Read more
  • Read All News

Monday, December 11

  • 9:00 AM to 11:00 AM
    Dendro class for Tucson HS

Thursday, December 14

  • 9:00 AM to 10:30 AM
    Docent-led Tour for FSO

Thursday, December 14

  • 10:00 AM to 11:30 AM
    Docent-led Tour

See Calendar →

College of Science

Bryant Bannister Tree-Ring Building, 1215 E. Lowell Street, Tucson, AZ 85721-0045, USA office@ltrr.arizona.edu 520-621-1608

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