sediments are used to reconstruct different climate variables as e.g. past changes in sea surface temperature and sea-ice variability (Uk ' 37 ; IP 25 ) or circulation dynamics (δ 13 C; δ 18 O). Ultra h [...] et al. (2014) Figure 2: Detailed Comparison of sedi-ment proxy records from the subpolar North Pacific and North Atlantic realm from 138 to 70 ka on their established time scales (Max et al., 2014). Source:

how the SHW interacted with past changes in sea surface temperature and how this is linked to changes in Antarctica. We aim to reconstruct precipitation and sea surface temperature on decadal to millennial [...] southern hemisphere westerly wind belt (SHW) encircles Antarctica, tracking the mid-latitude meridional sea surface temperature gradient (e.g. Lamy et al., 2010 ). The SHW is an important component of global [...] understanding of the dynamics of the SHW and temperature evolution. To this end, we investigate a north-south transect of marine and lake sediment cores spanning the range of the SHW (Fig. 1). From these

aims are to: Determine submarine permafrost thawing rates on the Bykovsky Peninsula (north Siberia) and Alaska North Slope using a combination of geophysical, sampling, and remote sensing methods Determine [...] permafrost landscape 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 [...] permafrost thaw processes. Different study sites, such as the Lena Delta in Siberia or the Alaska North Slope, among others, serve as the key study sites for my research. Contact: Ingmar Nitze Keywords:

east of the Ross Sea operated in either dextral strike-slip or extensional motion throughout the region to the south and east of the Amundsen Sea Embayment and in the Bellingshausen Sea sector, connecting [...] on the Amundsen Sea shelf: (1) distributed rifting events parallel to the breakup front, (2) the influence of the Bellingshausen Plate motion with a plate boundary through the Amundsen Sea Embayment, and [...] and geothermal heat-flow data to improve our understanding of the role of the Amundsen Sea and Bellingshausen Sea shelves and margins in context of the continental breakup, activities of the West Antarctic

future projection experiments (e.g., sea ice outlook).We have been developed data assimilation system which exploits observed sea ice concentration, ice thickness and sea ice drift obtained from satellite [...] 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 Model (FESOM2) [...] fields”, which are a set of ocean and sea ice variables optimally combining observations and a model. The analysis fields are applied for a variety of ocean and sea ice studies in the Arctic Ocean, and

first move from the Antarctic Peninsula/ northern Weddell Sea southeastwards to a position close to Neumayer Station (70°39’ S, 08°15’ W, ~600 km north of Kohnen Station) and then continue to move to the east [...] Weddell Sea southeastwards to a position close to Neumayer Station and become stationary there. (12% of events). Category IV: Lows which first move from the Antarctic Peninsula/ northern Weddell Sea sout

Ocean receives freshwater by run-off from Asia north of the Himalaya. Large rivers carry freshwater from this enormous catchment area into the Eurasian shelf seas. Ocean waters with salinities below the average [...] balance of the Arctic Ocean. Such waters flow in from the Nordic Seas. An interchange of waters between the Arctic and the Nordic seas results in in seasaw fluctuations in fresh water content between the [...] Current and sea ice flux through Fram Strait. Inflow of saline water from the South is equivalent to a fresh water export. Fresh water from the Arctic strengthens the stratification in the Nordic Seas and the

sources are in deep-sea sediments. We attempt to use this new tracer as a tool to quantify the upwelling rates of deep water masses (including NADW) that enter the Southern Ocean from the north. [...] deep ocean. In an analogous way it is also used for the study of resuspension rates near the deep-sea floor. 230Th and 231Pa We know the production rate of 230 Th (Half-life 75400 y) and 231 Pa (half-life

Researchers of the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, together with the Bremerhaven Zoo have developed a special exhibition on the reintroduction of the European oyster (Ostrea edulis) into the North Sea. On display are living European oysters in an aquarium, a detailed model of an oyster reef and its inhabitants as well as background information on the ecological importance of the species in the exhibition.

on variations of sea ice along the Northern Sea route Computation of length of navigation season for the Northern Sea route along the Russian coast Retrospective modeling of synoptic sea ice dynamics and [...] (WP3) • Cyclone and wind-wave activities influencing sea ice dynamics and risk of navigation along Northern Sea routes (WP4) • Impact of Arctic sea ice and cyclones on biodiversity and productivity of [...] global feedbacks between atmosphere, sea ice and impacts on ocean circulation systems will be determined. • The role of changed Arctic sea ice conditions for Northern Sea routes will be computed using POLARIS