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07 Jan 2013: New Arctic Experiments Yield
Insights Into State of Permafrost Carbon

A team of U.S. researchers recently deployed a suite of technologies in the Arctic tundra that they say will provide a better understanding of the carbon contained in permafrost soils and how much is likely to be released as the planet warms. At an experimental plot near Barrow, Alaska, scientists are using several techniques, from ground-penetrating radar systems dragged on sleds to airborne instruments that measure micro-topography, to better understand how different layers of permafrost are interrelated and react as the soil warms. Ultimately, the scientists say, the research will provide critical information on how these permafrost systems change over time, and how much of their vast stores of carbon might be released. “This approach allows us to sample over large spatial regions with minimal disturbance to the ecosystem — two important criteria when it comes to studying the vast and delicate Arctic landscape,” said Susan Hubbard, a geophysicist at the Lawrence Berkeley National Laboratory. The team of scientists, from four U.S. national laboratories and the University of Fairbanks, describe their research in the journal Hydrogeology.


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