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

ground surface conditions is crucial for monitoring the thermal state of permafrost and dynamics in active layer thickness. Permafrost degradation affects ecosystems, communities and industrial sites in large [...] the evolution of permafrost under these conditions is of great importance. Due to an often-prevailing harsh climate in these vast areas, observational data sets are sparse. Permafrost itself is a sub-surface [...] which seasonal snow cover has on the ground surface, strongly affects the permafrost’s thermal regime and active 1Permafrost is defined as any material beneath the ground surface that remains frozen for

20-25min): Permafrost Degradation and Infrastructure Modeling Permafrost Landscape Dynamics Housing and infrastructure related problems in Greenland Modeling Gravel and Ice Roads on Permafrost Lunch: 12:00 [...] Tundra Travel Detecting Permafrost Dynamics and Infrastructure from Space Permafrost Landscape Dynamics and Indigenous Land Use Modeling Biogeophysical Processes in Permafrost Environments Lunch: 12:00–12:30: [...] 12:00 – 12:30: Breakout Sessions 12:30 - 14:30: Modeling Permafrost - Infrastructure Interactions Permafrost Degradation Features Ground Ice and Hydrology Breakout Sessions Summary 14:30 – 15:00 Open Poster

Prize for AWI scientist Ingmar Nitze: As part of this years Publication Award of the Leibniz Kolleg in Potsdam, the permafrost expert has been announced as a laureate. The yearly confered promotion supports young scientists of mathematics and natural sciences.