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

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

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

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

Filled beakers are collected after multinet is back on deck Multinet is set out on board of RV Polarstern Multinet is ready for deployment Multinet in the water The Multi Plankton Sampler MPS 92B is used

BOX WHITE RV HEINCKE PLYWOOD BOX YELLOW RV MARIA S. MERIAN STYROFOAM BOX RV METEOR THERMO BOX RV POLARSTERN UNPACKED RV SONNE WOODEN BOX RV UTHÖRN SAMOYLOV / LENA-DELTA OTHER Tabelle1

BOX WHITE RV HEINCKE PLYWOOD BOX YELLOW RV MARIA S. MERIAN STYROFOAM BOX RV METEOR THERMO BOX RV POLARSTERN UNPACKED RV SONNE WOODEN BOX RV UTHÖRN SAMOYLOV / LENA-DELTA OTHER Tabelle1

BOX WHITE RV HEINCKE PLYWOOD BOX YELLOW RV MARIA S. MERIAN STYROFOAM BOX RV METEOR THERMO BOX RV POLARSTERN UNPACKED RV SONNE WOODEN BOX RV UTHÖRN SAMOYLOV / LENA-DELTA OTHER Tabelle1

BOX WHITE RV HEINCKE PLYWOOD BOX YELLOW RV MARIA S. MERIAN STYROFOAM BOX RV METEOR THERMO BOX RV POLARSTERN UNPACKED RV SONNE WOODEN BOX RV UTHÖRN SAMOYLOV / LENA-DELTA OTHER Tabelle1

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