Welcome to the MGHPCC Virtual Booth

University of Massachusetts

Amherst

Global Consequences of Warming-Induced Arctic River Changes

Sediment from Canada’s Mackenzie River empties into the Beaufort Sea in milky swirls in this 2017 satellite image. Scientists are studying how river discharge drives carbon dioxide emissions in this part of the Arctic Ocean. Credit: NASA Earth Observatory image by Jesse Allen using Landsat data from USGS
Professor Michael Rawlins is an Earth Scientist who uses MGHPCC computers to advance understanding of the hydrology and biogeochemistry of arctic environments. His research investigates how climatic processes affect and influence terrestrial water and carbon cycles through synthesis studies which leverage in situ observations, numerical models, and remote sensing data.

As the Arctic warms, its mighty rivers are changing in ways that could have vast consequences – not only for the Arctic region but for the world.

Rivers represent the land branch of the earth’s hydrological cycle. As rain and snow fall, rivers transport freshwater runoff along with dissolved organic and particulate materials, including carbon, to coastal areas. With the Arctic now warming nearly four times faster than the rest of the world, the region is seeing more precipitation and the permafrost is thawing, leading to stronger river flows.

Rawlins is a climate scientist who studies how warming is influencing the water cycle and ecosystems. In a new study, he and his co-author Ambarish Karmalkar Assistant Professor of Geosciences, University of Rhode Island executed numerical model simulations on the UMass/URI UNITY cluster housed at the MGHPCC to explored how climate change is altering Arctic rivers. The sophisticated hydrology model is computationally intensive and coded in Fortran, and thus able to leverage the state-of-the-art infrastructure within the MGHPCC.

Learn more
Michael A. Rawlins
Associate Director, Climate System Research Center and Extension Associate Professor, Department of Earth, Geographic, and Climate Sciences, UMass Amherst

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Featured projects

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Ask.CI
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Electron Heating in Kinetic-Alfvén-Wave Turbulence
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Fuzzing the Linux Kernel
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Global Consequences of Warming-Induced Arctic River Changes
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