sink, hereby transporting large quantities of carbon to the ocean’s depths. Experts from the Alfred Wegener Institute recently observed this phenomenon for the first time in the Arctic. As a result of

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Model Simulations What are sea ice models used for? Example of a sea ice model (Graphic: Alfred Wegener Institut) The Arctic areas - ocean even more than land - are difficult to reach, for several winter

analyses of images from Mann et al. (2004) . Screenshot SHERPA (Photo: Alfred-Wegener-Institut) Segmented diatom valve (Photo: Alfred-Wegener-Institut)

stable water isotope values of ice cores from Northern Greenland (Graphic: Stefanie Weißbach, Alfred-Wegener-Institut) Human activities have serious impacts on the global environmental system and will,

informtion can be found on the REKLIM website . Circumpolar Map of Northerm Hemisphere (Graphic: Alfred Wegener Institut) Project collaborators Lars Max Ralf Tiedemann Figure 1: Overview map of high-latitude

dynamics and Earth System feedbacks Permafrost coring in the Fish Creek Delta, North Alaska (Photo: Alfred Wegener Institut) Arctic permafrost landscapes change rapidly under the influence of natural and ant [...] permafrost carbon pools and their vulnerability to mobilization Alaskan Yedoma cliff (Photo: Alfred Wegener Institut) Arctic landscapes underlain by permafrost are threatened by climate warming and may [...] Degradation of ice-rich permafrost by thermal erosion thermoerosional valley Kurungnakh (Photo: Alfred-Wegener-Institut) Thermo-erosional valleys are widely distributed in ice-rich permafrost deposits of

region and West Antarctic margin (modified from Kipf et al., Gondwana Research, 2014). (Photo: Alfred-Wegener-Institut) Geodynamic and tectonic processes played a dominant role in forming the present topographic

been successfully applied to North Atlantic/Arctic Ocean Sea Ice Model (NAOSIM) developed at the Alfred Wegener Institute (AWI). We are currently working to apply the systems to Finite-volumE Sea ice-Ocean [...] simulation without data assimilation, red: model simulation with data assimilation. (Graphic: Alfred-Wegener-Institut) Spatial pattern of sea ice extent in September, from 1990 to 2010 (every 5 years). [...] simulation without data assimilation, black: model simulation with data assimilation. (Graphic: Alfred-Wegener-Institut) Spatial pattern of sea ice motion in August 2006: Left panel: model simulation without

Example of Microstructure Mapping image (Photo: Ilka Weikusat, Alfred-Wegener-Institut) An essential part of ice core research at the AWI consists of mapping the microstructural parameters (grain size