changes for the biodiversity in this area. Physical, biogeochemical and ecological studies with Polarstern in the FOS in the southern Weddell Sea shall characterize this hotspot in detail in order to recognize

long-term measurements in Antarctica, ( Neumayer_III ), in the Arctic (AWIPEV ) and on the oceans ( Polarstern ) automatic weather stations (AWS) are in use. The numbers of the AWS-systems and their locations

, which contains information on seabed sediment composition (e.g., soft sediment, rock, etc.). Polarstern has a hull-mounted Teledyne Atlas HYDROSWEEP DS III (HSDS3) full ocean-depth MBES permanently installed

CONTRASTS (PS149) Contrasts of sea ice regimes in the Arctic Ocean during melt season The Polarstern expedition CONTRASTS (2 July to 1 September 2025, also named PS149, ArcWatch-3) investigates the causes [...] The aircraft campaign IceBird summer 2025 complements with regional surveys. Sea ice station with Polarstern (example from MOSAiC 2020). The vessel is moored to the ice floe. Measurements are performed and [...] autonomous devices. (Graphic: Alfred-Wegener-Institut) On-route measurements and regional surveys With Polarstern, the helicopters and also the aircrafts on the IceBird summer expedition (from Station Nord), we

Floats are free drifting underwater buoys Fig. 1: The research vessel "Polarstern" in antarctic waters. The antenna of a deployed float is visible in the foreground. (Photo: Alfred-Wegener-Institut) Floats

terrestrial polar research of high international reputation. The AWI runs the research and supply ship "Polarstern", the research vessel "Heincke", four small research cutters, two research aircraft, a permanently

Greenland continental shelf. To close this knowledge-gap, swath bathymetric data acquired by FS Polarstern over the last two decades is investigated to identify glacial landforms. This investigation will

Head, Senior Scientist Koch, Florian Scientist, System Manager Laboratories New Building Project Polarstern II Köck, Matthias Senior Scientist Kohlbach, Doreen Head of Young Investigator Group DOUBLE TROUBLE

gravity meters from LaCoste and Romberg for the purpose of these so-called tie measurements. On board Polarstern, underway measurements are made using a KSS-32 gravimeter from Bodenseewerke. Airborne measurements

Polarstern expedition ANT XXVII-2. Picture: S. Trimborn (Photo: Alfred-Wegener-Institut) Southern Ocean phytoplankton are major drivers of global carbon cycling accounting for 20% of the global annual