Thorium in the Arctic Ocean The Transarc expeditions together with earlier Polarstern campaigns have yielded a unique time series of the chemical and physical properties of the Central Arctic Ocean (CAO). Only [...] anthropogenic carbon is taken up by the ocean, and glacial ocean carbon storage in the deep Southern Ocean is well established ( Brovkin et al., 2012 ). Changes in Southern Ocean carbon uptake and its export to [...] of mud EXC 2077: The Ocean Floor – Earth’s Uncharted Interface The ocean floor, which makes up 71% of the Earth’s solid surface, lies an average of 3,700 meters beneath the ocean surface. The difficulties

with the atmosphere and ocean. (Antarctic) Climate change Improved snow process formulations in climate models Investigation of the impact of changing atmospheric and oceanic processes on the evolution [...] S. , and Meyer, H.: Isotopic signatures of snow, sea ice, and surface seawater in the central Arctic Ocean during the MOSAiC expedition, Elementa: Science of the Anthropocene, 12, doi.org/10.1 [...] research will significantly improve our process understanding of Antarctic sea ice in the Southern Ocean climate system – from today’s perspective and for future warming climate scenarios. Background Snow

Schepper What are the global impacts of an ice-free Arctic? How will the Arctic develop with increasing climate warming? What does an ice-free Arctic mean for our environment and our society? Researchers [...] surface uplift of the Andes, but also by changes in the oceanic circulation of the adjacent Pacific Ocean. The timing, forcings, and feedbacks of land-ocean coupling and their impact on the past hydroclimate [...] feedback mechanisms in the Arctic affect the phase shift of Arctic surface temperature. The function of each feedback will be quantified for understanding the physical processes of Arctic amplification underlying

better understand and quantify the role of clouds in the lower Arctic atmosphere. A special focus is on the amplified climate change in the Arctic. To that aim measurements during ACLOUD and AFLUX were/are [...] Airborne Observations In, Below and Above Arctic Clouds Map of the areas for aircraft operation illustration the coordination activities at Polarstern and Ny Alesund (Photo: Alfred-Wegener-Institut) ACLOUD [...] research institutes (listed below) embedded in the Transregional Collaborative Research Centre TR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms (AC)³

shoreline of Kongsfjord at the west coast of Spitsbergen, where ocean currents carry warm water from the North Atlantic Ocean. That means, the ocean warms the climate in Spitsbergen, which is why in summer the [...] Spitzbergen has risen by 1.3 °C. A warming of the Arctic, which becomes apparent especially in winter. The main climate influence in Ny-Ålesund is the Arctic Ozean. The scientific village is located right [...] -Institut are collecting these weather data with the help of meteorological observatories in the Arctic and Antarctic. Their data is coded after each measurement and transmitted to other research stations

speed of several millimetres to centimetres per year (plate tectonics). So-called mid-oceanic ridges run through the oceans. In these zones magma rises from the Earth’s interior to the surface, cools down there [...] magma again. A region in which new seafloor continuously forms is, for instance, Gakkel Ridge in the Arctic. This is a submarine mountain range whose northern foothills extend from the northeast tip of Greenland

Wiltshire, Scientists for Future Find out more > Allinfo | 27.06.2019 Climate research in the ocean: Wild ocean and warm water Find out more > Dialogue & Lectures Policy advice Waddensea Strategy for Climate [...] lstein Scientific advisor Ocean Future G7 Scientific Advisor (2015-2018) Intergovenmental Panel on Climate Change (IPCC) Plankton Change Group member (since 2017) World Ocean Assessment Report United Nations [...] at the centre of the action. Coastal waters and its tidal interfaces are the cradle of life in the ocean: microalgae and seagrasses not only find ample nutrients to form underwater meadows and forests. In

Maps of the Arctic and Antarctic with underwater sound recording sites occupied by the AWI Ocean Acoustics group since 2006. PALAOA (PerenniAL Acoustic Observatory in the Antarctic Ocean) Between 2006 [...] in the Antarctic Ocean, or “whale” in Hawaiian. attached, since 2008, to deep-sea mooring of the oceanographic Hybrid Antarctic Float Observatory (HAFOS) and the Frontiers in Arctic Marine Science (FRAM) [...] seals, fish and invertebrates between Spitsbergen and Greenland. Further moorings in the adjacent Arctic Ocean extend this array slightly to the North. MAP of FRAM moorings hosting PAM recorders an AZFPs.

refreezing at the sea ice surface dramatically changes the energy exchange between atmosphere and ocean in the Arctic. Melt ponds play a key role in these changes, because they substantially enhance the absorption [...] albedo of Arctic summer ice from satellite optical data. Remote Sensing of Environment, 163, 153-164. doi:10.1016/j.rse.2015.03.012. Rösel, A.; Kaleschke, L., Birnbaum, G. 2012. Melt ponds on Arctic sea ice [...] early summer, when melt ponds started to form. From 9 May to 8 June 2008, we operated in the Canadian Arctic, mainly over the southern Beaufort Sea with Inuvik as airbase for Polar 5 . Sea ice conditions changed

Danilov, N. Koldunov, C.Liu, V. Mueller, D. Sidorenko and T. Jung, 2024: Eddy activity in the Arctic Ocean projected to surge in a warming world . Nature Climate Change , 14 , 156–162, doi.org/10.1038 [...] 387 , 68–73, doi.org/10.1126/science.adq7280 . Wang, Q., S. Danilov, and T. Jung, 2024: Arctic freshwater anomaly transiting to the North Atlantic delayed within a buffer zone. Nature Geosci [...] Beech, N., T. Rackow, T. Semmler, S. Danilov, Q. Wang and T. Jung, 2022: Long-term evolution of ocean eddy activity in a warming world. Nature Climate Change , 9 , 910–917, doi.org/10.1038/s41558-022-01478-3