Stories From the Field

Aug 8, 2014
Gifford Wong

Gifford Wong, Ph.D. Student, Earth Sciences

Gifford Wong looks at the effect of climate change on the growth and decay of the Greenland Ice Sheet (GIS). He studies how changes in temperature affect our ability to assess the health of the GIS.

During the summers of 2010 and 2011, Gifford collected snow samples from pits (~2 m depth) and cores (~10-100 m depth) in the northwest GIS along a traverse route that roughly connects Thule Air Base with NEEM camp and Summit Station in Greenland. He took these samples back to the labs at Dartmouth where he prepared them for chemical...

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Aug 8, 2014
Rebecca Williams

Rebecca Williams, PhD, Engineering

Rebecca William’s research while she was a Thayer School of Engineering graduate student involved creating higher-level intelligence and control software for a four-wheel robot called Yeti. It pulls ground penetrating radar behind it to find crevasses. Each year heavy equipment resupply missions travel to remote, heavily crevassed locations in Greenland and Antarctica. Rebecca worked on the Yeti robot that tows Ground Penetration Radar to detect crevasses.

In 2012, she also worked on Roosevelt Island on the eastern side of the Ross Ice Shelf...

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Aug 8, 2014
Simone Whitecloud

Simone Whitecloud, PhD student, Ecology and Evolutionary Biology

Simone Whitecloud documents plant names and uses in order to preserve traditional knowledge. Plant ranges are changing in response to a changing climate, and her data will preserve knowledge that would otherwise be lost as plant ranges shift and practitioners lose access to the same plants.

During the summer of 2011, Simone worked with her collaborator, Lenore Grenoble from the University of Chicago, to document plant uses in southern Greenland (Qassiarsuk and Nanortalik) by interviewing community-recognized...

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Aug 8, 2014
Marcus Welker talking to children

Marcus Welker, PhD Student, Ecology and Evolutionary Biology

Marcus Welker studies salmon and how they find their way home. Salmon are born in rivers, migrate to the ocean or lakes, and return again years later to the place they were born with incredible precision.

Specifically, Marcus is measuring amino acids in rivers that are believed to give each river a unique chemical fingerprint that salmon learn as juveniles, remember as adults, and use to discriminate their home streams. Marcus wants to know if these chemical fingerprints are unique to ever river and if they are...

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Aug 8, 2014
Benjamin Walker

Benjamin Walker, PhD Student, Engineering Sciences

Ben Walker studies ways in which to conduct safe crevasse detection for sup¬ply traverse personnel through robotics research. Each year a heavy equipment resupply is conducted between Thule, NEEM and Summit Camp, Greenland, and this resupply must traverse heavily crevassed sections of the Greenland Ice Sheet to complete the job. Ben’s research is developing a robot and instrument combination that will automatically collect and interpret this data.

During his fieldwork season at Summit Camp in June of 2013, Ben increased the...

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Aug 8, 2014
Christine Urbanowicz

Christine Urbanowicz, Ph.D. Student, Ecology and Evolutionary Biology

Christine Urbanowicz studies the pollinators and plant-pollinator interactions that are beneficial for flowing plants in Greenland’s tundra ecosystem. She is interested in how variation in plant density and temperature influence the number of pollinators that visit flowers and the number of fruits a plant produces. She is also collecting data on parasites of bumblebees in Greenland.

In 2013, Christine counted the numbers of insects visiting flowers in six sites around Kangerlussuaq, Greenland, that were...

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Aug 8, 2014
Jessica Trout-Haney

Jessica Trout-Haney, Ph.D. Student, Ecology and Evolutionary Biology

Jess Trout-Haney studies how climate change affects high latitude aquatic ecosystems, specifically their physical, biochemical, and biological properties. She studies how differences in lake chemistry and morphometry of low-nutrient Arctic lakes affect the abundance of cyanobacteria and cyanotoxins in southwestern Greenland.

In the summer of 2013, Jess surveyed 19 lakes of varying size and depth between Kangerlussuaq and the Greenland Ice Sheet in southwestern Greenland. She ran sonar transects across each...

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Aug 8, 2014
Kristin Schild

Earth Sciences

Kristin is studying specific environmental controls, such as warming temperatures that are driving an increase in ice mass loss through Greenland’s tidewater glaciers. She uses remote sensing (satellite imagery and time lapse cameras taking pictures of the glacier terminus) to determine how much of the glacier is experiencing melt and when meltwater exits the glacier and enters the fjord. The timing between melt onset and when the meltwater emerges gives her an idea as to how the meltwater travels through and below the glacier.

Kristin and her colleagues have...

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Aug 8, 2014

Engineering Sciences

Chris studies the Greenland Ice Sheet (GIS), which is the second largest ice cap in the world and contains 10% of Earth’s glacial ice. In the past several years, melt on the GIS has been increasing and contributing to sea level rise, but understanding how rapidly the ice sheet will melt in the future remains fairly limited.

Chris has executed two long traverses on the GIS to determine what controls the amount of sunlight absorption, and thus melt, on the surface of the ice. In 2012, a number of major wildfires in the Northern Hemisphere during late spring...

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Aug 8, 2014
Chelsea Vario Petrenko

Ecology and Evolutionary Biology

Arctic soils contain more than half of the soil carbon that is stored worldwide. Because microorganisms are more active at higher temperatures, warming temperatures in the Arctic could cause a significant release of carbon from soils to the atmosphere, creating a positive feedback to climate change.

Chelsea is measuring the sensitivity of Greenlandic soils to warming temperatures and determining if and how vegetative cover (shrub versus grass-dominated) influences belowground soil carbon dynamics.

During the summer of 2012, Chelsea and...

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