Permafrost Remote Sensing Profile Permafrost landscape dynamics are intensifying in rapidly warming Arctic-Boreal high northern latitude regions. Relying on field studies we observed and understand a wide [...] continuous time series data of land cover change, permafrost landscape change, or other environmental dynamics. We particularly focus on permafrost region landscape characteristics, land cover change [...] Friedrich Röseler Annabeth McCall Carl Stadie Guest: Kathrin Maier Projects FLO CHAR ESA Permafrost CCI ESA GlobPermafrost ERC PETA-CARB (2013-2018) IPA Action Group - The Yedoma Region

Permafrost Region Greenhouse Gases Profile Climate change affects many northern ecosystems such as wetlands, peatlands and permafrost soils, which store a lot of carbon and nitrogen in organic matter. [...] peatlands, wetlands, and permafrost soils. Our projects focus on carbon and nitrogen interactions, cold-season biogeochemical processes, methane emissions from northern wetlands, and permafrost dynamics in northern [...] published a paper with the title: Predicted vulnerability of carbon in permafrost peatlands with future climate change and permafrost thaw in Western Canada doi.org/10.1029/2020JG005872 12 March

making permafrost visible. Permafrost Change What are the effects of a warmer climate on permafrost? Find out more The sound of data Art and Science, an enhancing connection. Find out more Permafrost Resources [...] Why does permafrost matter? illustration of permafrost thaw and climate change during the Long Night of Sciences (Photo: Alfred-Wegener-Institut) Currently we see glaciers melting and observe how sea ice [...] mostly unrecognized. Creating awareness for the processes of permafrost thaw, is our motivation. We want to show what happens, when permafrost thaws - what it means to ecosystems and people living in the

Permafrost Modelling Profile Why do we need Permafrost Models? Permafrost models are important tools to investigate the role and the sensitivity of frozen ground under very complex environmental and climatic [...] Since permafrost is usually not visible at the earth’s surface and only few measurement sites exist, models are also important to investigate the current state of permafrost. Furthermore, permafrost models [...] the elements that we are able to simulate with our permafrost-land surface model. (Graphic: Alfred-Wegener-Institut) What are Permafrost Models? Permafrost models provide information on ground temperatures

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 Profile About 34% of the world's coasts are affected by Arctic permafrost and are particularly sensitive to climate change. The frozen cliffs lose their cohesion, which is ensured by [...] ble to quantify the amount of eroded sediment and organic material more accurately. The group "Permafrost Coasts" investigates the velocity and character of sediment and organic matter transport into the [...] echosounder bathymetry: to quantify the content of particulate and dissolved organic material in permafrost sediments and their bottom ice and to characterize its spatial variability; to quantify the velocity

Project "Permafrost Change" For most people, permafrost is a distant phenomenon that seems to have little to do with their own lives, making it hard for them to relate to. With the help of the resources [...] people have the chance to see, hear, touch and smell permafrost, thanks to original archaeological artefacts from the Ice Age and hands-on permafrost experimentation boxes. More over visitors can use a [...] virtual permafrost world. Lastly, ‘before-and-after’ lenticular images, together with video and audio recordings from expeditions to the Arctic, will help illustrate the thawing of the permafrost, and the

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

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

the permafrost – with a host of grave consequences. Typical permafrost landscape in Yukon, Canada (Photo: Alfred-Wegener-Institut) What does permafrost look like? Some landscapes in the permafrost regions [...] Can permafrost only be found on land? How deep does the permafrost go? To what depth does it thaw in summer? Why is thawing permafrost important for the climate? How much carbon does the permafrost contain [...] How fast is the permafrost thawing? Why are permafrost coasts increasingly collapsing? How is the thawing permafrost affecting people living in these regions? How is the thawing permafrost affecting economies