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Carbon of the Kolyma Lowland Permafrost Under Recent Change of Climate

Carbon of the Kolyma Lowland Permafrost Under Recent Change of Climate
Type: 
Poster
Anna Davydova1, Sergey Davydov2, Dmitry Fyodorov- Davydov3, Ekaterina Bulygina4, Max Holmes5
1North-East Science Station, Pacific Institute of Geography, FEB RAS, Malinovyi Yar, Cherskiy, Russia, Phone 74115723013, davydoffs [at] mail [dot] ru
2North-East Science Station, Pacific Institute of Geography, FEB RAS, Cherskiy, Russia, Phone 74115723013, davydoffs [at] mail [dot] ru
3Institute of Physicochemical and Biological Problems in Soil Science, RAS, Pushchino, Russia, muss [at] orc [dot] ru
4The Woods Hole Research Center, 149 Woods Hole Rd, Falmouth, MA, 02540, USA, Phone 15085409900, kbulygina [at] whrc [dot] org
5The Woods Hole Research Center, 149 Woods Hole Rd, Falmouth, MA, 02540, USA, Phone 15085409900, rmholmes [at] whrc [dot] org

Permafrost of the vast Siberian Coastal Plains is a potentially important source of carbon during warming periods. This lowland is underlined by continuous permafrost and the most ancient ground ice formation of Eurasia. The overwhelming majority of the modern landscape of this region contains icy loess-like loam sediments with thick polygonal ice wedges. The ice wedge landscapes are usually called 'Yedoma' or 'Ice Complex'. Compared to other arctic regions, Yedoma has a higher ice and total organic carbon content. A boundary between active and older Yedoma layers called a transitional layer was generated by the climatic optimum of the Holocene. This layer (0.1 - 2.0m thickness) has the highest excess ice content. The current climate warming is increasing active layer thickness and thermokarst and thermo-abrasion, leading to the involvement of buried terrestrial carbon into the contemporary biogeochemical cycle. Here we present results of our study of carbon content and fluxes in different types and layers of permafrost of the Kolyma Lowland as they relate to recent climate change

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National Science Foundation | Division of Arctic Sciences
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Department of Energy
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Association of Polar Early Career Scientists
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Bureau of Land Management
International Study of Arctic Change
International Study of Arctic Change
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DAMOCLES
Developing Arctic Modeling and Observing Capabilities for Long-term Environmental Studies

This work is supported by the National Science Foundation (NSF) under the ARCUS Cooperative Agreement ARC-0618885. Any opinions, findings, and conclusions or recommendations expressed do not necessarily reflect the views of the NSF.