We are a research group at the Laboratory of Tree-Ring Research at the University of Arizona.  We use tree rings to study past climate, forest ecosystems, and their interactions.  Our research interests include the climate of the last ~2,000 years, atmospheric circulation patterns, fire-climate interactions, the carbon cycle, seasonally dry forests, and human-environment interactions.   We have a global focus and are involved in research projects in the American West, Africa, and central and southeastern Europe.

Valerie Trouet, Principal Investigator
Associate Professor
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Guobao Xu, Postdoctoral Fellow
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Amy Hudson, PhD Candidate
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Matthew Meko, PhD Student ​
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Diana Zamora-Reyes, PhD Student ​
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Kasja Iler, MS Student ​
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Nathan Begley, Undergraduate Student ​
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Alumni

Soumaya Belmecheri - Research Associate at UA LTRR
Flurin Babst-Swiss Federal Institute for Forest, Snow and Landscape Research WSL
Genaro Guttierez - UABC, Ensenada, Baja California, Mexico
Raquel Alfaro Sánchez - CREAF, Barcelona, Spain
Qichao Yao - State Forestry Administration, P.R. China
Ross Alexander - graduated Spring 2017 with PhD from UA School of Natural Resources and the Environment
Paul Szejner - Post-doc in Hu Lab at UA School of Natural Resources and the Environment
Robert Shepard - graduated Fall 2015 with MS from UA School of Natural Resources and the Environment
Zakia Hassan Khamisi - graduated Spring 2014 with MS from UA School of Natural Resources and the Environment
Cynthia L. Norton - MS student in Smith Lab at UA School of Natural Resources and the Environment
Katie Marascio - graduated in Fall 2015 with BS from UA Department of Geosciences