farther than the 85th paral- lel north. In February 1895 this prompted Fridtjof Nansen and his companion Hjalmar Johansen to leave the ship and attempt to reach the North Pole using dog sleighs. According [...] largest Central Arctic expedition of all time. The icebreaker Polarstern will drift through the Arctic sea ice for a year to capture scientific data from the northernmost point on our planet. (Photo: Stefan [...] birds and mammals. In addition, cameras can be installed in the crow’s nest to photograph the current sea-ice conditions. Main Deck From small handheld nets to ROVs weighing several metric tons: this is where

the following paragraphs, the team from the first leg of the journey, which was dominated by thin sea ice, review the mission so far: despite extremely challenging conditions, they maintained a steady

MOSAiC
For days, fast sea ice had slowed the progress of the resupply icebreaker Kapitan Dranitsyn; bound for the North Pole, her mission was to support the second exchange of researchers and crew in

export of sea ice and relatively fresh water through Fram Strait depend on these sea ice properties. A feedback loop connects oceanic heat transport, winds and sea ice transport in the Greenland Sea (Kovacs [...] 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 sea saw fluctuations in fresh water content between the basins [...] water we employ ocean sea ice and large-scale Earth System models. The models are validated using sea ice drift estimates from satellite remote sensing and regional airborne sea ice thickness measurements

with a coupled ocean-sea ice model (North Atlantic Arctic Ocean Sea Ice Model, NAOSIM) show a destabilisation of the halocline due to increased freezing in polynyas of Arctic shelf seas. We are planning to [...] of the coupled atmosphere-sea ice-ocean system during different sea ice regimes as a function of spatially heterogeneous surface properties (e.g., albedo, temperature, sea ice, and snow thickness). These [...] global climate models. A focus will be the Barents Sea, where strong surface heat fluxes foster low sea level pressure and shallowdepth export of water and sea ice. The export is compensated for by a corresponding

for atmospheric research and geophysics purposes, the airplane has landed on the Arctic sea ice near the North Pole, and at the South Pole.

Wadden Sea National Park the participating researchers will use e.g. empirical and model-assisted analyses to discover how minute plastic particles (microplastics) make their way from land to sea, which [...] Microplastics
Around the globe, the pollution of rivers, lakes and seas with plastic litter is on the rise. A new project jointly coordinated by the University of Bayreuth and the Alfred Wegener Institute

France Haliotis (FR) Sea-based Rhodes Univ. (ZA) & Wild Coast Abalone (ZA) Biofloc UFSC (BR) & Trevisan (BR) NEW ECHINODERM SPECIES Sea urchin NOFIMA(NO)& Wild Coast Abalone (ZA) Sea cucumber AWI (DE) & [...] organisms low on the food chain as sea urchins or mussels. The five chosen value chains include macroalgae, Integrated Multi-Trophic Aquaculture (IMTA), echinoderm species (e.g. sea cucumbers), shellfish and finfish [...] the Potential of Sustainable Aquaculture in the Atlantic Ocean 36 participants from Europe, Brazil, North America and South Africa 11 innovative case studies 4 years June 2019 - May 2023 +50 members in the

Integrated Multi-Trophic Aquaculture (IMTA): land-based and sea-based, new species and systems 3. New echinoderm species: sea urchins and sea cucumbers 4. Existing shellfish species: oysters and mussels [...] million euros in funding from the EU’s Horizon 2020 programme 36 participants from Europe, Brazil, North America and South Africa 16 Countries 20 + members in the Industry Reference Group (IRG) 5 selected

Federation of Digital Seismograph Networks FESOM Finite-Element/Volume Sea Ice Ocean Model FESOM-RecoM Finite Element/Volume Sea Ice Ocean Model – Regulated Ecosystem Model FIS Forschungsinfrastrukturen [...] Coordination Group for the Tsunami Early Warning and Mitigation System in the North-Eastern Atlantic, the Mediterranean and connected seas ICGEM International Center for Global Earth Models ICON Icosahedral N [...] program encom- passing twelve collaborative projects in coastal and shelf research in the North and Baltic Sea, BMBF-funded LandscapeDNDC Biogeochemistry and ecosystem dynamics model LandTrans AGRI Modular