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Alaska thermokarst modeling

Projecting land cover change in the Yukon Flats National Wildlife Refuge, Alaska


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In addition to widespread active layer deepening, ice rich permafrost can thaw laterally, often triggering abrupt thermokarst and subsidence of the ground surface. In boreal forest, thermokarst can lead to the development of collapse scar bogs, fens, or lakes inducing large changes in the hydrological regimes. The poorly drained conditions of these features causes the development of peatlands, which store large amounts of carbon in thick surficial peat layers, but also produce substantial methane emissions. At the regional level, the climate warming effects of methane emissions from the newly formed wetlands could be greater than the climate cooling effects of increased soil carbon sequestration. These changes in hydrological regimes [...]


(other) :
Helene Genet

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Project_Brief_Final.pptx 7.75 MB application/vnd.openxmlformats-officedocument.presentationml.presentation


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ScienceBase WMS


  • LandCarbon



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