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PERMAFROST RELEASE INTO THE MARINE SYSTEM IN A WARMING ARCTIC (PRIMA)
IADC_id: 173
active
Call year: 2020
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Project description:
Permafrost is perennially frozen ground that contains 1300±200 Pg of organic carbon accounting for over twice as much as the carbon stock in the atmosphere before the industrial revolution . Thawing followed by decomposition of this mega OC pool can potentially free large quantities of Greenhouse Gases (GHGs; i.e., CO2 and CH4) into the atmosphere which, in turn, can further accelerate and amplify climate warming. In addition to carbon, permafrost thaw can release large amounts of previously frozen-lock pollutants into the aquatic environment. To what extent permafrost will contribute to the future GHGs rise, release of pollutants and in changing the aquatic ecology is debated but it will certainly depended on the magnitude of the thaw, the permafrost reactivity upon thawing and its transport across the coupled watershed-margin system During summer 2020, we will be deploying a mooring line (ca. 60 m long) equipped with a sediment trap/sensors (temp, salinity, currents) and collecting sediment cores (ca. 6) in the marine region under the influence of the Bayelva river to document modern and historical changes associated with the natural and human-induced changes. The mooring line will be maintained for at least 4y after deployment. Our overarching goal is to couple watershed and marine processes to investigate the impact of permafrost thaw and glacier retreat along the land-ocean continuum. Focus will be placed on the release of biospheric carbon and contaminants into the fjord.
National/International Cooperation:
Stockholm University University of Amsterdam
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