Tree Ring Lab Archives - State of the Planet

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.

by |October 25, 2022
nicole davi headshot

Learning From Tree Rings: An Interview With Nicole Davi

A dendrochronologist explains how tree rings can teach us about our past, present, and future.

by Nataley Williams |March 8, 2022
forest on mountain side overlooking valley

New Way of Analyzing Tree Rings Confirms Unprecedented Central Asia Warming

Researchers have reconstructed temperatures in Mongolia all the way back to 1269 C.E., showing that recent temperatures are the warmest the region has seen in eight centuries.

by |August 17, 2021

Rooftop Camera Will Track How Local Forests Change With the Climate

Installed on top of Lamont’s oceanography building, PhenoCam will help track how trees grow and change with the weather, seasons, and climate change.

by |November 3, 2020
rosanne d'arrigo

Rosanne D’Arrigo: Decoding The History of Climate Cycles, One Tree Ring At A Time

A simple fascination with winter and weather patterns led D’Arrigo to become a globe-trotting scientist who collects and analyzes important data from tree rings.

by |June 11, 2020

Park Williams Discovers History and Science in a Tree Ring

Park Williams studies trees and climate, in particular the causes of drought and the effects of climate change on forests. In this latest in a series of Earth Institute videos, we spoke to him about what he does, what’s important about it, and how his interest in history and environmental science blended into a career.

by |March 24, 2017

Syria’s Drought Likely Its Most Severe in More than 900 Years

“If climate change is having an impact and is making droughts worse, then we should see this in the record over several centuries—and we do,” said the study’s author, Benjamin Cook.

by |March 1, 2016

A New Global Team Tracks Temperature Change Through Time

A new international consortium of scientists is bringing the history of temperature fluctuations across the entire Northern Hemisphere to life.

by |January 28, 2016
Tree ring research was a young field in 1975 when Ed Cook (above, in Nepal) and Gordon Jacoby founded the Tree Ring Lab at Lamont. The Lab would become a world leader in tree ring sampling and analysis and a source of technology and training for dendrochronologists around the world. Photo by Paul Krusic

Translating Nature’s Historians: The Tree Ring Lab Turns 40

In its first 40 years, the Lamont Tree Ring Lab tracked changing climates around the world, building an international reputation as a global leader in research, training and technology.

by |September 16, 2015
Scientists documented the first annual tree rings in a native species on Hawai'i in māmane found on the slopes of Mauna Kea. Photo: Scot Nelson/CC-BY-SA-2.0

Tree Rings on Hawai’i Could Hold New Knowledge About El Niño

Annual tree rings are a rare find in the tropical islands of the eastern Pacific. The new discovery of trees with annual rings on a Hawaiian volcano could provide new climate data from a part of the world where much of the variability of the El Niño-Southern Oscillation originates.

by |August 21, 2015