perennially frozen carbon that may be released by further warming. Climate change already thaws permafrost, reduces sea-ice and increases riverine discharge over much of the pan-Arctic, triggering important [...] impact of shifting seasonality, fresher water, changing nutrient supply and greater proportions of permafrost-derived carbon on coastal waters CACOON Aims CACOON addresses this knowledge gap by investigating [...] watershed area. CACOON will quantify the effect of changing freshwater export and terrestrial permafrost thaw on the type and fate of river-borne organic matter delivered to Arctic coastal waters, and

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

Permafrost Long-term Observatories Our long-term observatories collect weather, soil and permafrost data at various measuring stations in Siberia (Lena river delta, Samoylov), Canada (Trail Valley Creek [...] indicates the significance of the slope (MannKendall test). Data, publications and information from the Permafrost LTO's. LTO Samoylov LTO-Trendviewer LTO Bayelva

Coastal Permafrost Prosion, Organic Carbon and Nutrient Release in the Arctic Nearshore Zone ), it’s the ideal field laboratory. Lantuit and his team want to determine how fast the permafrost is thawing [...] measures temperature and moisture Herschel Island's plateau Drilling on the plateau Borehole in the permafrost Investigating the vegetation Determining the biodiversity Soil sample Measurements along the coast

Spitsbergen. We had two main goals: Firstly, we maintained the Bayelva permafrost observatory where multiple air, snow, soil, and permafrost parameters have been measured since 1998. And secondly, we measured [...] elevations using a high-accuracy GPS antenna to estimate surface subsidence resulting from thawing permafrost. In addition, we visited research sites of local and international partners and discussed scientific

in WP5. Methods will include quantification of land to ocean carbon transport from glacier and permafrost melting and analysis of POC degradability and POC/DOC concentration and composition, organic matter

investigation into the rapidly changing permafrost regions in the northern hemisphere. The project seeks to answer pressing questions about the role of permafrost thaw in the global climate system, and [...] the people living in these regions. The culmination of this ambitious endeavour is the "Arctic Permafrost Atlas," a ground-breaking publication set to launch during the Arctic Circle Assembly on October

Many of the models used to make climate projections are unable to dynamically reflect permafrost. A new study involving experts from the Alfred Wegener Institute has for the first time applied an extensive [...] extensive ensemble of 17 climate models to quantify how said models portray permafrost in warm climates. Drawing on a comparison of models for a warm period during the mid-Pliocene roughly three million years [...] Proceedings of the National Academy of Sciences the researchers conclude that the near-surface permafrost extent was less than 10 percent of that seen in the preindustrial era.

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