Arctic climate and ocean dynamics - Earth system modelling - Terrestrial Arctic ecosystems and permafrost Biosciences: - Marine, coastal and shelf sea systems - Arctic ocean ecology and impacts - Aquaculture

Award 2024 from the International Permafrost Association (IPA) to honor his outstanding lifelong commitment and accomplishments in permafrost research and for the permafrost research community.

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

effects and causing the permafrost to thaw in step with climate change. As such, taking decisive action today is all the more important if our goal is to preserve as much permafrost as possible. The study [...] Permafrost soils store large quantities of organic carbon and are often portrayed as a critical tipping element in the Earth system, which, once global warming has reached a certain level, suddenly and

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

and Tiedemann, R. (2018): Deglacial mobilization of pre-aged terrestrial carbon from degrading permafrost , Nature Communications, 9 (1), p. 3666, doi: 10.1038/s41467-018-06080-w . Werner, M. , Jouzel [...] ions, 6 (6309), pp. 1-8, doi: 10.1038/ncomms7309 . Köhler, P. , Knorr, G. and Bard, E. (2014): Permafrost thawing as a possible source of abrupt carbon release at the onset of the Bølling/Allerød , Nature [...] C. Contoux, M. Chandler, N Tan, Q Zhang, S Hunter, Y Kamae 2023: Highly restricted near-surface permafrost extent during the mid-Pliocene warm period. Proceedings of the National Academy of Sciences, 120

Yedoma Permafrost Landscapes as Past Archives, Present and Future Change Areas The Research Topic „Yedoma permafrost landscapes as past archives, present and future change areas” was published in Frontiers [...] this Yedoma Research Topic represent a broad view on current know-ledge in permafrost research with respect to Yedoma permafrost landscapes. Since about 150 years research was undertaken to highlight the [...] Frontiers in Earth Science in July 2022. Ice-rich permafrost deposits of late Pleistocene age (Yedoma Ice Complex) covered several million km² of the Arctic main land between the Taymyr Peninsula and the Yukon

Common Grounds – Permafrost Sonification The circumpolar region of the arctic is the fastest warming place on earth. While finally acknowledged by the public, and already felt as more frequent extreme [...] Halperin-Kaddari of the Sono-Choreographic Collective in collaboration with Tobias Grewenig and the Permafrost research group led by Julia Boike at Alfred-Wegener-Institut Potsdam. Common Grounds ATD Documentation [...] Participants (extern) Kerstin Ergenzinger, Bnaya Halperin-Kaddari, Tobias Grewenig Section (AWI) Permafrost Research

Warming permafrost thaws and degrades. Greenhouse gases (GHGs) trapped within or beneath permafrost are released, thus influencing regional and global climate. The carbon cycle of permafrost regions has [...] indicate submarine permafrost thaw. Siberian land craters are a previously unknown permafrost landscape feature. They is evidence of extremely rapid gas release due to permafrost thaw events. Project [...] events on the status of our hydrologic, ecological and socio-economic Earth systems. Thawing permafrost Permafrost underlies a quarter of the Northern Hemisphere’s land mass and a large portion of the Siberian

the collected soil samples. Project Information Contact www.moment-permafrost.uni-hamburg.de/en/kontakt.html Website www.moment-permafrost.uni-hamburg.de/en.html Project Duration November 2022 until October [...] MOMENT The project " Permafrost Research Towards Integrated Observation and Modelling of the Methane Budget of Ecosystems," abbreviated as MOMENT, aims to reduce uncertainties in future greenhouse gas [...] This requires a comprehensive qualitative and quantitative understanding of the methane cycle in permafrost regions. In the Blæsedalen Valley on Disko Island, West Greenland, various studies on the current