Grant Changes of water isotopes in Arctic Sea ice, Ocean, and atMosphere (CiASOM) (2021-2024) The main goal of the Changes of water isotopes in Arctic Sea ice, Ocean, and atMosphere (CiASOM) project is [...] this end, caves and permafrost exposure will be studied in East Siberia along a transect from the Arctic Ocean to the Lake Baikal. The objectives of the project are to: (i) Reconstruct (a) mean interglacial [...] to provide a comprehensive description of the present-day Arctic water cycle and related key exchange processes between the atmosphere, ocean, and sea ice, using both instrumental data and climate simulations

snow represents an important fresh water input, which affects density and salinity layers of the ocean. Besides its direct climatic impact, the snow layer also adds to the uncertainty of sea ice thickness [...] vessel. Snow buoy, deployed on sea ice (Photo: Alfred Wegener Institut) We deploy snow buoys in the Arctic and Antarctic. They are equipped with echo sounders to record changes at the snow surface. Buoy data

into the climate history of the Arctic Ocean. Using unique sediment samples from the Lomonosov Ridge, the researchers found that six to ten million years ago the central Arctic was completely ice-free during [...] winter, however, the ocean was covered by sea ice of variable extent, the scientists explain in the current issue of the journal Nature Communications. These new findings from the Arctic region provide new

Network ESA Climate Change Initiative IceArc: Arctic Ice Climate and Economics MOSAiC SPICES Transdrift: Arctic Ice-Ocean-Interaction Changing Arctic Ocean Arctic Amplification Junior Groups SO-Clim projects [...] des arktischen Ozeans Southern Ocean - Overturning Circulation The southern ocean - circulation Ocean-Ice Shelf Interaction FRISP Ozean-Schelfeis Wechselwirkung Ocean Acoustics Group - AWI OZA Projects [...] Seismology Geomagnetics Infrasound Formation of the Arctic Basin Ultraslow spreading mid-ocean ridges OBS studies MOVE KNIPAS Gateways of the Southern Ocean Large Igneous Provinces Bathymetric Compilations

Potsdam carry out expeditions to the Arctic and Antarctic. They are mainly devoted to Arctic research - in particular in the permanently frozen areas of Siberia and the Arctic island group Spitzbergen - and [...] in the system. German Arctic Office Since 2017, the German Arctic Office at AWI Potsdam serves as an information and cooperation platform for German stakeholders invested in Arctic science, politics and [...] Wegener Institute started its work in 1992. The scientific focus is the investigation of polar land-ocean-atmosphere linkages, complementing the marine and coastal research fields at the AWI sites in Bremerhaven

calved from an ice shelf or glacier, it drifted, mainly forced by the wind and the ocean currents, through the ocean – sometimes surrounded by open water, sometimes surrounded by sea ice. The automated [...] polar regions Sea Ice Drift and Deformation Drift and deformation of sea ice Permafrost Charting the Arctic Tundra Polynias Observation of coastal polynias Snow Accumulation Retrieval of snow accumulation

a seismic station on sea ice Seismic station installed on drifting sea ice In the ice-covered Arctic Ocean we also use seismic land stations deployed on drifting ice floes to record small earthquakes.

km water depth in the ice-covered Arctic Ocean and recovered it in more than 80% sea-ice cover (expedition AURORA of RV Polarstern). The data show that the Arctic ocean exhibits a very low noise level and [...] Seismology in (sub)polar oceans Contact Prof. Dr. Vera Schlindwein Seismology in stormy oceans In the stormy „Furious Fifties“ we succeeded for the first time to recover ocean bottom seismometers after [...] of new ocean lithosphere. Lucky OBS recovery in snowy darkness Getting help with OBS recovery Seismology under sea ice In summer 2014, we deployed for the first time an especially modified ocean bottom

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

at the Arctic Ocean A lead in the sea ice of Amundsen Gulf Arctic marshlands In the Arctic Refuelling Team of NETCARE 2015 Flying halfway around the globe: measuring sea-ice thickness in the Arctic Anyone [...] Meereis Melt ponds on arctic sea ice Arctic: Ice or water? Aerial photo of Arctic sea ice in the record year 2012 Research vessel Polarstern during an ice station in the Arctic Ozean An iceberg drifts [...] Snow-covered Arctic sea ice New ice is forming Watch out for crevasses! Arctic sea ice First stage of arctic sea ice View onto a glacier’s calving front on the Norwegian island of Spitsbergen Arctic sea ice