everyone. © Angelika Dummermuth Not just a bucket of sea water: a bucket full of life 06. September 2022 A simple bucket tied to a rope, when tossed into the sea and filled with seawater, can provide a wealth [...] per millilitre! © Maité Guignard Shamrock Canyon 05. September 2022 After three days we left the North Sea, rolled up our sleeves, prepared our instruments, and were ready to get started with practical work [...] An oceanographer peering through a microscope and counting bacteria? An ecologist mapping the deep-sea floor? A marine biologist collecting and studying aerosols? A chemist identifying different species

port 17. August 2022 After 51 days at sea, we arrived back in Bremerhaven today in the morning hours. These have been eventful weeks; our work has taken us north along the eastern Fram Strait, back repeatedly [...] program in the Greenlandic Scoresby Sund. Since difficult ice and weather conditions around the 79 North Glacier didn’t allow us to conduct our planned work there, we used the opportunity and recovered three [...] spreading ridge, where new seafloor is continuously being formed. For once we weren’t interested in the sea ice surrounding us but in the seafloor about 4000 m below the ship. There we deployed eight ocean bottom

The Research Vessel Polarstern was in the Arctic for the past seven weeks. There, the summertime sea-ice extent declined by ca. 40 percent over the past 40 years – making it one of the most visible impacts [...] Polarstern investigated Atlantic Water Recirculation in Fram Strait and in the marginal ice zone north of Svalbard, as well as ocean/glacier interactions off the coast of Greenland. Central research questions [...] questions included how the ice conditions, ocean heat fluxes and ocean stratification determine sea-ice melt in the marginal ice zone (between the ice free waters and the dense pack ice) and how the melt

provision: Markus Brand (Helig.) Christoph Walcher (Helig.) Diving operations management: (Heligoland, North Sea, Arctic) Markus Brand Laura Eickelmann Scientific projects, Heligoland & AWIPEV: Markus Brand Liliana

Cultivation of European flat oyster seed For the reintroduction in the German North Sea German reintroduction projects This project is funded by the Federal Agency for Nature Conservation with resources [...] oyster PROCEED Sustainable production of seed oysters for long-term reintroduction projects in the North Sea | Accom- panying research| Coordination of a Europe-wide reintroduction network (NORA) | Knowledge [...] return of the native oyster The shells of the native oyster species once covered the floor of the North Sea and served as an important habitat. This solid shell substrate disappeared from the German Bight

Does sea ice play a particular role in Arctic jellyfish ecology? We evaluate the role of sea ice as a habitat for jellies in order to make predictions on their potential decrease with further sea ice decline [...] DNA analyses. Such interdisciplinary surveys allow us to link distributional patterns of jellies to sea-ice and oceanographic (sub-mesoscale) features. We apply species and community distribution models [...] of jellies in the Arctic food web, their importance for higher trophic levels and their link to the sea-ice trophic pathway will be elucidated with metabarcoding and biomarker studies. We plan to conduct

mentioned, we do not only take water samples and ice cores but also conduct air- based research on sea ice. As soon as the weather is favorable, Lena and Gunnar are flying with our Heli-Team over the ice [...] installed on the helicopter to document the floes and to measure the structure and temperature of the sea ice. By flying with the helicopters, the team is getting the seldom chance to see the Polarstern from [...] from above. This photo for example was made during one of the test flights while we were on our way north towards the ice. © Klara Köhler Into the ice 15. July 2022 Finally, our Polarstern lives up to its

Greenland, conduct studies on sea ice melt north of Spitsbergen and deploy equipment for seismological measurements in the Aurora Vent field. However, during the transit to the north we first have to unpack [...] in which container are our boxes? Where did I pack this one certain cable? Just within one day on sea, the empty rooms change to workable labs and the piles of cartons start to shrink. Now we have to set [...] hopefully we are all ready when we arrive at the first station in some days. © Klara Köhler To the North 28. June 2022 Here we go again: after a short stay in the shipyard, Polarstern is starting into the

Wiegmann , Sonja (2022) Phytoplankton pigment concentrations during POLARSTERN cruise PS121 from North Sea to Fram in August to September 2019. PANGAEA , doi.pangaea.de/10.1594/PANGAEA.941011 Bracher

lead to a shift in the jet stream and the formation of a blocking high-pressure system over the North Sea and parts of Germany. This in turn means that the April weather in Central Europe is getting much