inducing more permafrost thaw and carbon release. To assess the concern of a permafrost-climate feedback and to develop a better understanding of future permafrost-carbon dynamics, the Permafrost Biogeochemistry [...] drastic changes in Arctic permafrost landscapes, such as active layer deepening, thermal erosion and development of rapid thaw features. Organic matter stored frozen in permafrost deposits for thousands of [...] Characterizing the past, present and future changes of permafrost organic matter under warming climate and changing land use. Mission Statement: The Permafrost Biogeochemistry Working Group focuses its efforts

multiproxy analyses of permafrost and lacustrine records. Our Permafrost Section staff has diverse expertise and uses a wide range of methods. Methods for studying past permafrost conditions and environmental [...] environments and dynamics of permafrost landscapes Methods for studying the current and future state of permafrost: Continuous measurements of hydroclimatic data and permafrost temperatures Study of water [...] Lantuit Assistant Melanie Reinhardt Website Sebastian Laboor Stations Permafrost Data Permafrost Long-term Observatories In Focus - Permafrost Publications Expedition Reports

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

Profile submarine permafrost (Foto: Volker Rachold /AWI) (Photo: Alfred Wegener Institut) What is submarine permafrost? Subsea permafrost in the Arctic is generally relict terrestrial permafrost, inundated after [...] Why is it important? Submarine permafrost is similar to its terrestrial counterpart, but lies beneath the coastal seas. And as with terrestrial permafrost, subsea permafrost is a substantial reservoir and/or [...] of submarine permafrost and the influence of future climate system changes on submarine permafrost. Key lines of inquiry include: seasonal and interannual variability of sea floor permafrost boundary conditions

stages were the long-range periods of permafrost aggradation. Interglacial periods were characterized by extensive permafrost degradation. Circum-arctic Permafrost dynamics and Quaternary environmental [...] Permafrost Archives Development, stability and degradation of permafrost have strongly been connected with natural climate fluctuations of cold and warm periods during the Quaternary earth history of the [...] for three decades. Characteristics of frozen sediments and ice structure therein inform how the permafrost deposits have been formed and transformed. Ice wedges can say something about the composition of

Isotope and Geochemistry of Permafrost Permafrost Monitoring and Modelling in the Context of Global Change Coastal and Offshore Permafrost PA WG on Coastal and Offshore Permafrost, IPA-IASC project Arctic [...] Themes Conference Theme Organized in association with Permafrost Records of Past Climate and Environments IPA Antarctic Permafrost WG Permafrost Affected Soils, Microbiology and Trace Gas Releases IPA [...] and Environment Permafrost as Analog for Extraterrestrial Systems Hydrology and Sediment Fluxes in Permafrost Regions ESF project SEDIFLUX Mineralogy, Geochemistry and Isotopes in Permafrost Research PA WG

Permafrost data Data from the Permafrost Research Section or on permafrost can be found in the following repositories and data portals: Arctic Permafrost Geospatial Centre (APGC) The Arctic Permafrost [...] changed. Web address: https://permafrost-lto.awi.de/ Contact: Julia Boike Global Terrestrial Network for Permafrost (GTN-P) The website of the Global Terrestrial Network for Permafrost (GTN-P) provides a dynamic [...] of project-specific WebGIS projects. The Permafrost Research Section is involved in several WebGIS projects (e.g. ESA GlobPermafrost , Ice-Rich Yedoma Permafrost or Samoylov) Web address: maps.awi

Arctic permafrost: The ground is thawing Prof. Dr Guido Grosse, Head of Permafrost Research Section at the Alfred Wegener Institute. Permafrost Greenhouse gases Climate change Permafrost is the technical [...] Download AWI permafrost expert Dr. Guido Grosse is, jpg | 1 MB AWI permafrost expert Dr. Guido Grosse and, jpg | 710 KB AWI permafrost expert Dr. Guido Grosse in, jpg | 816 KB Researcher for permafrost Prof. [...] quantities of ground ice, which, when permafrost thaws, leads to melting of the ice and surface sinking. This can dramatically change the landscapes and water cycle in permafrost regions, while also affecting

Submarine Permafrost and coastal interaction Coordination: Dr. Paul Overduin Find out more Simulating erosion processes in permafrost landscapes Coordination: Dr. Moritz Langer Find out more Permafrost archives [...] Permafrost Region Greenhouse Gases Coordination: Dr. Claire Treat Find out more Energy and Water Fluxes in Permafrost landscapes Coordination: Prof. Dr. Julia Boike Find out more Erosion of the coasts [...] Dr. Hugues Lantuit Find out more Permafrost Remote Sensing Coordination: Prof. Dr. Guido Grosse Find out more Characterisation of organic matter in changing permafrost landscapes Coordination: Dr. Jens

deep permafrost soil carbon pools to rapid thaw and resulting impacts. The three research topics were: (1) Systematic measurement of rapid permafrost thaw, (2) Characterization of deep permafrost SOC stocks [...] PETA-CARB wordle (Graphic: Alfred Wegener Institut) What is Permafrost? Carbon in Permafrost Arctic landscapes, especially those underlain by permafrost, are threatened by climate warming and may degrade in [...] Wegener Institut) Arctic permafrost deposits are estimated to freeze-lock as much carbon in the atmosphere, allowing a potentially significant climate warming feedback loop when permafrost thaws and carbon is