On September 5, 2025, the Lamont-Doherty Tree Ring Lab will celebrate 50 years of pioneering research. Since its founding in 1975, the Lab has led the global effort to use tree-ring science to understand past climates and environmental change better—and to apply this knowledge to future climate projections.
To mark this milestone, a special colloquium will highlight the Lab’s significant scientific contributions over the past five decades. Presentations will cover current research on climate patterns, archaeological timelines, and the effects of human activity on forests, ecosystems, and carbon cycling. The event will also look ahead to the Lab’s future tree-ring and ecological research directions.
3:30 p.m. | Monell Auditorium
Colloquium
Biology and Paleo Environment Division:
Edward Cook, Ewing Lamont Research Professor
Rosanne D’Arrigo, Lamont Research Professor
Brendan Buckley, Lamont Research Professor
Nicole Davi, Adjunct Senior Research Scientist,
Laia Andreu-Hayles, Lamont Associate Research Professor
Caroline Leland, Postdoctoral Research Scientist
Mukund Rao, Lamont Assistant Research Professor
Biology and Paleo Environment Division, Lamont-Doherty Earth Observatory
4:30 p.m. | Reception
The Earth Science Colloquium Series, sponsored by Lamont-Doherty Earth Observatory and Columbia University Department of Earth and Environmental Sciences (DEES), provides a lively forum for discussing a wide variety of topics within the Earth sciences and related fields. Colloquia are attended by the full range of scientific and technical staff at LDEO. Colloquium attendance is required of all pre-orals DEES graduate students. The Colloquium Series supports the Lamont Seminar Diversity Initiative.
