apparent scars in the world’s permafrost regions. As the new global comparative study conducted by the international permafrost network GTN-P shows, in all regions with permafrost soils the temperature of the

Background: Methods and Preliminary Results: Simulating rapid permafrost degradation and erosion processes under a warming climate Model setup:Permafrost under a warming Climate: Current State and Further Development [...] slump dynamics. Current distribution of permafrost on the northern hemisphere. Current Land Surface Models (LSMs) used to simulate the degradation of permafrost under a warming climate only consider o [...] abundant form of thaw in many regions. Photographs showing typical features of permafrost degradation in the Arctic. Permafrost thaw is usually associated with intensive erosion and mass wasting. Schematic

Spaceborne platforms Kartierung und Fernerkundung Permafrost in einem sich erwärmenden Klima Deadhorse, Prudhoe Bay Churchill, Manitoba Lena Delta, Sibirien Permafrost in Landoberflächen-Modellen Modellierung Photo: [...] of permafrost temperatures in a tundra lowland landscape. Remote Sensing of Environment 135, 12–24. Westermann et al., 2016: Simulating the thermal regime and thaw processes of ice-rich permafrost ground [...] Churchill, einem Zentrum für arktischen Tourismus, leben um die 900 Einwohner. Die Stadt ist auf Permafrost gebaut. Mit unseren Arbeiten wollen wir dazu beitragen, geeignete Anpassungsstrategien für die

fluxes; permafrost modelling; CryoGrid3 Motivation State-of-the-art land surface models used for simulating permafrost dynamics generally focus on capturing gradual thaw only (i.e. describing permafrost thaw [...] lakes in permafrost environments, we discuss the importance of lake dynamics for affecting tundra landscape thermal regimes and future permafrost degradation. 5TH EUROPEAN CONFERENCE ON PERMAFROST Figure [...] n of permafrost soils. Using the process-based model CryoGrid-3 coupled to a model description of lake dynamics (FLake), we explore how the thermal and hydrological state of different permafrost landscapes

warming and the Arctic K 1 2 0 -1 -2 Global permafrost distribution (NASA: Scientific Visualization Studio based on IPA map) Mu(d)ch about Permafrost Global permafrost distribution (NASA: Scientific Visualization [...] underlain by permafrost. ● Permafrost controls essential ecosystem functions such as water and nutrient cycles. ● About 1500 Pg organic carbon are stored in the upper meters of permafrost. ● The Arctic [...] River Delta State of the art of modeling permafrost CLM4.5 projection following the RCP8.5 scenario Koven et al. (2015) State of the art of modeling permafrost CLM4.5 projection following the RCP8.5 scenario

2016]. Methodology The study area close to Prudhoe Bay, Alaska lies within the zone of continuous permafrost and is char- acterized by high ground ice contents. The landscape displays vast natural and hu [...] Westermann, J. Boike, G. Kirillin, G. Grosse, S. Peng & G. Krinner [2016]: Rapid de- gradation of permafrost underneath waterbodies in tundra landscapes – Toward a representation of thermokarst in land surface

site close to 5TH EUROPEAN CONFERENCE ON PERMAFROST Prudhoe Bay and underlines the need for a better understanding of landscape changes resulting from permafrost thaw. By applying a combination of high [...] their surrounding topography and hydrological network, leading to a further destabilization of permafrost soils. This study aims at the remote sensing based identification and quantification of these lateral [...] infrastructure. Keywords: Thermokarst lake expansion; erosion rates; Sentinel; RapidEye; CryoGrid3; permafrost Introduction Thermokarst ponds and lakes are an abundant and widespread landform throughout the

Permafrost
In the future, climate change could abruptly increase the amount of methane released by lakes in the permafrost regions of the Arctic. The explanation: because of thawing permafrost, these

Permafrost
For years now, scientists have been investigating how the gradual thawing of near-surface permafrost, which takes place in the uppermost layers of Arctic soils and in the course of decades [...] another phenomenon, which has only been sporadically investigated: the abrupt thawing of ice-rich permafrost, which can transform entire landscapes in only months of years through subsidence, the formation

Permafrost
The fate of permafrost - soil that is frozen for 2 or more years - is of huge importance for the global climate because of the large amounts of organic carbon stored in it, which can be released