Beavers gnawing away at the permafrost

their new homes, creating a host of new water bodies. This could accelerate the thawing of the permafrost soils, and therefore intensify climate change, as an International American-German research team

Why permafrost might thaw sooner than expected

Permafrost
Experts from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), the Humboldt-Universität zu Berlin (HU) and the University of Oslo have determined that much [...] much of the permafrost that is currently still very cold might disappear by the end of the century. What’s new about their simulations: the inclusion of thermokarst processes. The outcomes of the study

European Research Council (ERC) funds Potsdam AWI researcher

emissions of the greenhouse gases methane and nitrogen so high outside the vegetation periods in permafrost regions? How do the carbon and nitrogen cycles and the resulting greenhouse gas emissions differ

Coastlines’ contribution to climate change possibly underestimated

Scientific Publication
Permafrost coasts make up about one third of the Earth’s total coastline. As a result of accelerated climate change, whole sections of coastline rapidly thaw, and erode into the [...] now shows that large amounts of carbon dioxide are potentially being produced along these eroding permafrost coastlines in the Arctic.

Siberia’s permafrost erosion has been worsening for years

Permafrost
The Arctic is warming faster than any other region on the planet. As a result, permafrost that is thousands of years old is now being lost to erosion. As measurements gathered on the Lena [...] every year, roughly 15 metres of the riverbanks crumble away. In addition, the carbon stored in the permafrost could worsen the greenhouse effect.

New method for gauging methane release from Arctic lakes

Permafrost
Lakes in the northernmost latitudes are widely considered to be a significant source of the greenhouse gas methane. In order to improve currently available climate-change projection models

Volker_Rachold_AWI-Expert_UK.pdf

research centre in Potsdam, where he focused on geochemical investigations of Siberia’s rivers, permafrost and Laptev Sea coast. During this time, he led eight German-Russian Siberian expeditions. In 2002

File type: application/pdf
Referenced at:

AirMeth

Methane Emissions from Arctic Wetlands (AirMeth) Fig.6: Polar5 flying at low lever over Arctic permafrost. (Photo: Alfred-Wegener-Institut) The atmospheric concentration of methane, a potent greenhouse [...] pattern is shown in Fig.3. Starting from Barrow, long low level flight legs are flown over the permafrost wetland with ascents and descents interspersed for vertical soundings of the boundary layer structure [...] east to west during which the methane concentration accummulates in the boundary layer. Fig.1: Permafrost wetland of the Arctic Coastal Plain near Barrow (Alaska) (Photo: Alfred-Wegener-Institut) Fig.2:

Permafrost

arctic tundra is an unglaciated, treeless landscape characterized by the presence of continuous permafrost. The tundra is vegetated by low vegetation such as grass and sedges, herbs, little bushes, lichens [...] opportunity to receive information about the state of the tundra in large areas near real time. Permafrost in Greenland Geocoded TerraSAR-X scene of Zackenberg valley (© DLR 2013) (Photo: Alfred Wegener

Sea ice motion and deformation

/ NSIDC) (Photo: Alfred Wegener Institut) Remote sensing technology for the polar regions Permafrost Permafrost landscape in the Lena delta (© NASA / Landsat , 2000) (Photo: Alfred Wegener Institut) Charting