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

On 29 May 2025, the Polarstern research vessel set sail from Bremerhaven for the Arctic. The destination of the 95 expedition participants, led by the Alfred Wegener Institute, is the AWI Hausgarten, a

multi-disciplinary teams. The infrastructure we are using are AWI’s airborne platforms Polar 5/6 and Polarstern, the permanent and summer stations Neumayer III and Kohnen, ice and clean room laboratories, ice

ocean (transmittance). We perform various radiation measurements during our field campaigns using Polarstern, aircrafts, and stationary measurements. Our focus are observations that aim for better descriptions

Polarstern returned to her home port of Bremerhaven at high tide this morning. After a good 20 weeks in the Antarctic season, the research vessel moored at the pier in the overseas harbour at 5:00 am.

the Arctic and Antarctic Oceans for a changing climate and the polar ecosystems. Polarstern in der Arktis / Polarstern in the Arctic Contact Prof. Dr. Torsten Kanzow +49(471)4831-2913 Torsten.Kanzow @

CTD and Water Sampler A water sampler with a CTD probe is being deployed from the research vessel Polarstern. (Photo: Agnieszka Beszczynska) (Photo: Alfred-Wegener-Institut) The CTD is an oceanographic instrument

(German only) Sea ice close to Polarstern (Uni Bremen) General Polarstern Infos Cruise Reports Report: 25 Years of Polarstern Meteorology [...] data flow. Contact: polarstern-metobs@awi.de Responsible : Science: Holger Schmithüsen Engineering: Bernd Loose, Loretta Preis , Sebastian Berger Related Links: Where is Polarstern? Meereisportal (German [...] Meteorological Data Polarstern is well equipped for meteorological research as well as for routine meteorological services. The meteorological observatory is permanently manned with a weather technici

generally coded according the definitions of the Word Meteorological Organization WMO. On board of Polarstern the weather observations are coded according to the FM12/13 code and transferred without delay

and are operated from the Neumayer - and AWIPEV Stations, as well as from the research icebreaker Polarstern . MOSAiC expedition The Multidisciplinary drifting Observatory for the Study of Arctic Climate [...] (MOSAiC) was a major year-long campaign in the Central Arctic Sea ice, using the research icebreaker Polarstern . MOSAiC was a large international effort spearheaded by the Atmospheric Physics Section at AWI [...] coordination of the station. Antarctic To be filled! Text is missing Arctic Ocean (Central Arctic) FS Polarstern MOSAiC (Photo: M. Gutsche) The polar oceans in the Arctic and around Antarctica, characterized