Reading Rings: Subfossil Wood Reveals a Glacier’s Climate History

A scientist holds a piece of wood showing different growth rings.

In 2023, research ecologist Jeremy Litell, along with students and staff from the Juneau Icefield Research Program, skied miles across glaciers and ice ridges to follow up on a report of a five-needle pine tree dwelling in the gnarled, patchy, treeline, known as an alpine ecotone, that lined the Llewellyn Glacier.

The Alaska CASC Goes to Washington

Three members of the Alaska CASC stand outside the US Capitol Building.

Each year, folks on the university side of the Alaska Climate Adaptation Science Center (AK CASC) make a trek to Washington D.C. The purpose of the visit is to meet with policymakers to share updates about the work that we do to provide communities with actionable science they can use to make decisions related to climate impacts, adaptation, and resilience.