Erich Osterberg
Associate Professor of Earth Sciences

My overarching research objective is to understand how and why climate has changed and identify trends and sources of air pollution. My specialty is creating long (50-50,000 years) records of climate change and air pollution by analyzing chemical markers preserved in glacier ice cores. I also study data from weather stations and climate models to determine recent climate trends to differentiate natural cycles from human-caused changes. I am particularly interested in aspects of climate change that impact communities, including sea-level rise from melting glaciers, and the changing number and intensity of storms. Contact me at and see my CV here.

Jacob Chalif
Ice Core Lab Manager and Research Associate

My primary role involves operating and repairing our continuous melter system and performing geochemical analyses on meltwater samples. Beyond the lab side of things, I plan for upcoming coring projects and process and analyze data from our ice cores. I also use climate models and weather station records to examine changing atmospheric circulation patterns over the US. Right now, for example, we are looking into how a 20th-century cooling trend in the Southeast may have been influenced by slight shifts in jet stream waviness.

Maggie Lonergan
Masters Student

My interest in climate change and extreme weather events led me to leave a data science career and apply those skills to climate data. I am studying how to interpret wildfire markers in the North Pacific ice cores by combining records from the instrumental period with the ice core records to determine how faithfully and consistently each core records evidence of wildfire. This will provide guidance in how to interpret the fire markers in the cores from before the instrumental period.

Kat Adelman ’21
Undergraduate Student

I’m a Bachelors of Engineering student at Thayer, having graduated in 2021 with a double major in Earth Science and Engineering Sciences. My senior thesis examined a recent increase in dust concentration in Antarctic ice cores. I am interested utilizing knowledge of past climate dynamics to better understand and address anthropogenic climate change.

Abigail Lambert ’22
Undergraduate Student

I’m studying Environmental Earth Sciences and Science Communication with a focus on the effects of climate change in the Arctic region. Since 2019, I have been working with Erich to align the timescales of the Denali, Mt. Logan, and Eclipse ice cores. I also spent a summer on the Juneau Icefield doing climatology research and ski mountaineering with students and researchers from around the world. More recently, I have been involved in research through the Insitute of Arctic Studies to examine the co-production of knowledge and community involvement in Arctic research. During 21F, I will be working with North Pacific ice core data to examine climate-wildfire relationships in the region.

Liam Kirkpatrick ’22
Undergraduate Student

I’m an undergraduate studying Earth Science and Environmental Engineering. I’m interested in what we can learn about past climate in the cryosphere, and how we can apply these lessons to improving human lives over the coming decades. At Dartmouth, I’ve been focusing on using stable water isotopes to understand changes to temperature and weather patterns in the North Pacific.

Chantal Elias ’22
Undergraduate Student

I’m an undergraduate studying earth sciences and government, with a specific concentration in climate science. I have spent the past year and a bit investigating climate proxies in ice cores from the Western Greenland Percolation Zone using cores collected as part of the 2016-2017 GreenTrACS project. I hope in the future to use my background in climate science to work in climate policy at the federal and international level to reverse / prevent future harm to our climate and planet.

Victoria Hoffner ’22
Undergraduate Student

I am an undergraduate studying Economics and Environmental Studies, with focuses on energy systems and the Earth’s cold regions. I am particularly interested in the impact of valuation on sustainable transitions. At Dartmouth, I am also involved in research on valuation of ecosystem services provided by biochar application and associated policy implications. Outside of Dartmouth, I have done research on the relationship between bond ratings, extreme weather events, and climate change mitigation efforts.

Eric Youth ’23
Undergraduate Student

I am an Environmental Earth Sciences major with an intended minor in Environmental Science. Recently, I have been reconstructing prehistoric North Pacific climate and wildfire activity through the analysis of fire indicators in the Denali, Mt. Logan, and Eclipse ice cores. This fall, I will assist with the continuous melting of a new ice core from Denali to enhance the record of North Pacific climate change over the Holocene, particularly during the Medieval Climate Anomaly and the Little Ice Age.

Cady Rancourt ’24
Undergraduate Student

I am an intended major in Earth Sciences and minor in Climate Science. I am currently working on a URAD term research project titled “Weather Whiplash: Is climate change causing more variability in New England weather?” My main interests include anything Earth-related, but particularly climate dynamics and impacts of anthropogenic climate change.

Gavin Fry ’25
Undergraduate Student

My childhood fascination with weather has developed into a full blown passion for studying climate’s effects on severe weather. My broad research interests include climate variability and its impact on mid-latitude weather. In my future, I hope to use my scientific background in climate science and meteorology to make an impact on policy-making on Capitol Hill by providing timely climate information to key decision-makers. Currently, I am working on a research project examining the sub-seasonal climatology of extreme winter weather events in Texas, like the February 2021 “deep freeze” that exacerbated energy grid failures. 

Past Lab Group Members

Katie Anderson MSc ’20

Zayta Thundercloud UG ’18, Lab Manager 2018-2019

Huanping Huang PhD ’19

Gabe Lewis PhD ’19

Dave Ferris, Lab Manager 2013-2018

Dom Winski UG ’09, PhD ’18

Karina Graeter MSc ’17

Gifford Wong PhD ’15

Sam Beal PhD ’14

Matthew Siegfried MSc ’10

Ben Gross MSc ’09


Kat Adelman UG ’21

Andrew Binder UG ’21

Jacob Chalif UG ’21

Isabel Boettcher UG ’20

Maxwell Bond UG ’20

Victor Cabrera UG ’20

Catherine Granville UG ’20

Lydia Blanchet UG ’19

Julianne DeAngelo UG ’19

Eleanor Dowd UG ’19

Kevin Gross UG ’19

Melissa Dunham UG’18

Ursula Jongebloed UG ’18

Mariana Webb UG ’18

Tyler Kelsall UG ’17

Erin McConnell UG ’17

David Polashenski UG ’17

Patrick Saylor UG ’17

Fredrik Eriksson UG ’16

Bradley Garczynski UG ’16

Sarah Caughey UG ’15

Kristen Colwell UG ’14

Nikolas Ortman UG ’14

Sam Streeter UG ’14

Alfredo Velasco UG ’14

Aryeh Drager UG ’13

Hazel Shapiro UG ’13

John Thompson UG ’13

Elle Anderson UG ’11

Amy Burzynski UG ’11

Tom Callahan UG ’10

Joy Campbell UG ’10

Alexander Lee UG ’10

Anna Lugosch-Ecker UG ’10

Tina Praprotnik UG ’09

Sarah Stern UG ’08