dendrochronology
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Rings of Time: Seeking Clues to the Future in Urban Timber
Lamont scientists are working with lumber salvage companies to preserve old timbers from demolished structures that offer rich clues to climate data and human history.
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Tree Rings, Climate Change and the Rainy Season
Seeking to understand the history of the southeast Asian monsoon, researchers venture into the remote highlands of Vietnam to sample the rings of behemoth cypress trees that have survived for a thousand years.
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Celebrating Women in Science: Tree-Ring Researcher Rose Oelkers
A Q&A with Rose Oelkers, a Ph.D. candidate at the Lamont-Doherty Earth Observatory who studies tropical trees and their response to changes in the environment.
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1,000-Plus Years of Tree Rings Confirm Historic Extremity of 2021 Western North America Heat Wave
Scientists quickly pronounced the summer 2021 heat wave that hit western North America to be unprecedented, but they had no long-term physical proof. Now they do.
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What Tropical Trees Can Teach Us About the Environment
PhD student Rose Oelkers discusses her work in the Amazon and what we can learn from the trees if we listen closely.
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Learning From Tree Rings: An Interview With Nicole Davi
A dendrochronologist explains how tree rings can teach us about our past, present, and future.
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New York City’s Hidden Old-Growth Forests
Scientists are uncovering centuries of climate data and human history from giant old timbers saved from demolished structures.
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Anillos de Crecimiento de los Árboles Revelan Aumento sin Precedentes en Extremos Climáticos en Sudamérica
Un nuevo Atlas Sudamericano de Sequía revela que las sequías severas expandidas y los períodos inusualmente húmedos sin precedentes han ido aumentando desde mediados del siglo XX.
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Tree Rings Show Unprecedented Rise in Extreme Weather in South America
A new South American Drought Atlas reveals that unprecedented widespread, intense droughts and unusually wet periods have been on the rise since the mid-20th century.
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
