the thinning of sea-ice? Prof. Dr Christian Haas, Head of the Sea Ice Physics Section at the Alfred Wegener Institute and Professor at the Institute for Environmental Physics at the University of Bremen

yesterday and today! Apl. Prof. Dr Bernhard Diekmann, Head of the Potsdam Research Unit of the Alfred Wegener Institute and Professor of Quaternary Geology at the University of Potsdam. Climate Change History

Glaciology Ice Core (Photo: Hans Oerter, Alfred-Wegener-Institut) Ongoing acceleration of glaciers in Greenland and Antarctica, increasing contribution of ice sheets and glaciers to sea level change and

Earth System Complexity Gletscher in Island, © Kristina Brenner (Photo: Alfred-Wegener-Institut) The Earth System Complexity group at AWI is focused on understanding interactions between large-scale components

What are “moorings”? A current meter on a mooring line (Photo: Alfred-Wegener-Institut) Moorings are measuring systems that remain in a specific location in the ocean for several years. A mooring initially [...] diagram of a mooring with a large number of oceanographic devices. (Graphic: Matthias Monsees (Alfred-Wegener-Institut))

Romanova, Dr. Ralf Jaiser, Dr. Heidrun Matthes, Dr. Renate Treffeisen AWI PI: Dr. Annette Rinke, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45N, 14473 Potsdam [...] Potsdam, Germany, ++49 (0) 331 2882130, Annette.Rinke@awi.de AWI Co-PI: Dr. Dörthe Handorf, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Telegrafenberg A45N, 14473 Potsdam, Germany

investigate the temporal variability of processes acting on the ice cover Ice Track Plot (Graphic: Alfred-Wegener-Institut) Example application of how IceTrack can support campaign planning: Here IceTrack was [...] (ULS) location in the Laptev Sea: comparison between observed and simulated draft. (Graphic: Alfred-Wegener-Institut) A novel sea ice model framework, based on the single-column sea ice model Icepack ( [...] expedition . Validation sequence for the forecasting system for the years 2018 and 2019. (Graphic: Alfred-Wegener-Institut) The figure shows a forecast of the likelihood of encountering an ice concentration

stakeholders. Suggested cruise track for the two research legs of the BeauPAIR cruise. (Graphic: Alfred-Wegener-Institut) The REVISIT airborne campaign The REVISIT campaign (Repeated surveys of EnVIronmental [...] global climate system. To better understand these transformations and their cascading impacts, the Alfred Wegener Institute (AWI), together with the German Research Centre for Geoscience (GFZ) and international [...] provide critical validation data for a wide range of satellite missions. REVISIT campaign (Graphic: Alfred-Wegener-Institut)

III An innovative base of operations for Antarctic research Despite the hostile environs, the Alfred Wegener Institute operates a research station in the Antarctic where scientists can live and work year-round: [...] deadly; yet it also contains essential data for better understanding our planet. Accordingly, the Alfred Wegener Institute operates a research station in the Antarctic where scientists can live and work year-round [...] within the station remains within a closed loop, ensuring it is put to optimal use. (Graphic: Alfred-Wegener-Institut) 1. Foundation : The station’s total weight of ca. 2,300 tonnes is distributed among

AWIPEV Atmosphere Observatory with green laser beam of the lidar instrument. (Photo: G. Tran / Alfred Wegener Institute) At the Atmosphere Observatory of the AWIPEV research base in Ny-Ålesund , Svalbard [...] mast and BSRN radiation instruments at Neumayer Station, Antarctica. (Photo: H. Schmithüsen / Alfred-Wegener-Institut) In Antarctica, atmospheric research is split into two observatories at the Neumayer [...] Regions Svalbard, Arctic Atmosphere Observatory of AWIPEV-Base in Ny-Ålesund, Spitsbergen (Photo: Alfred-Wegener-Institut) Svalbard is a key region of climate change in the Arctic. On the one hand it is close