Jump to navigation

The University of Arizona Wordmark Line Logo White
Laboratory of Tree-Ring Research | Home
  • Support the LTRR

Search form

  • Home
  • About Us
    • Lab History
    • About Tree Rings
    • SEES
  • Research
    • Southwestern Dendroarchaeology
    • Aegean Dendrochronology Project
    • Collection
    • Software
    • CMATE
  • Teaching
    • Courses
    • Current Courses
    • Dendro Intensive Summer Courses 2019
  • People
    • Faculty
    • Staff
    • Students
    • Visitors
    • Docents
  • Resources
    • Fellowships
    • Student Awards
    • Meetings
    • References
  • Outreach
    • Outreach Calendar
    • Tree-Ring Open House @ Tucson Festival of Book
    • Docent-led Tours
    • Sky Island Science Investigators
    • Become a Docent
    • Outreach Events
    • Map and Directions
    • Art in the Bryant Bannister Tree-Ring Building

  • 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

  • Educating students and the public.

    The Laboratory of Tree-Ring Research teaches undergraduate and graduate courses; its outreach program also reaches thousands of children and adults in the community.
    https://ltrr.arizona.edu/courses

  • Established by the pioneer of dendrochronology.

  • Housed in a custom facility.

  • Pursuing interdisciplinary research.

  • Educating students and the public.

News

Kiyomi Morino working with images of cells within a tree ring

TV coverage of ring formation research

Sunday, July 21, 2019

A PBS TV broadcast highlights LTRR research on tree ring formation by Malcolm Hughes and Kiyomi Morino.

Read more
Lei Wang and Jungang Dong of the Chinese Academy of Sciences in Xi’an, China, take a sample from an ancient southern Chinese pine tree on Mt. Helan in the western Loess Plateau of China.

Tree rings and the Asian Summer Monsoon

Thursday, May 30, 2019

Tree-ring study indicates an 80-year decline in Asian Summer Monsoon precipitation at its northern edge, which is consistent with increasing sulfur pollution according to climate modeling.

Read more

Chronicles of the Rings: What Trees Tell Us

Tuesday, April 30, 2019
Read more
Figure 1 from the published paper

Jet stream effects on Californian wildfires and rainfall.

Tuesday, March 5, 2019

LTRR's Valerie Trouet is one of the authors on a paper linking Californian drought and fire to the jet stream.

Read more
photo of Julie Cole

Courtroom techniques for persuasive scientists.

Tuesday, February 5, 2019

LTRR grad student Amy Hudson is co-author of an article advising scientists how courtroom techniques could help them communicate ideas effectively.

Read more
Klesse et al. 2018 Figure 1.

Huge sets of tree-ring data add nuance to predictions of forest decline.

Thursday, December 20, 2018

Stefan Klesse and his co-authors have just published an article in Nature Communications.

Read more
  • Read All News

Wednesday, September 18

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

Wednesday, September 18

  • 12:00 PM to 1:00 PM
    LTRR Brown Bag Talk

Wednesday, August 28, Wednesday, September 4, Wednesday, September 11, Wednesday, September 18, Wednesday, September 25, Wednesday, October 2, Wednesday, October 9, Wednesday, October 16, Wednesday, October 23, Wednesday, October 30, Wednesday, November 6, Wednesday, November 13, Wednesday, November 20, Wednesday, December 4, Wednesday, December 11, Wednesday, December 18

  • 1:30 PM to 2:30 PM
    WSM/GEOS595E

See Calendar →

Laboratory of Tree-Ring Research | Home

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

Connect
  • Facebook
  • Twitter

© 2019 The Arizona Board of Regents on behalf of The University of Arizona.

  • Login