processes in the Arctic and Antarctic Oceans for a changing climate and the polar ecosystems. Polarstern in der Arktis / Polarstern in the Arctic Contact [...] Main research topics of our group Physical Oceanography of the Arctic Ocean The Arctic Ocean and the Nordic Seas are integral parts of the Atlantic meridional overturning circulation, and hence key [...] for the global climate. The perennial sea ice cover makes the Arctic Ocean distinct from subarctic oceans – the presence of… Find out more Ocean Optics Analytical bio-optical techniques are applied to

) The properties of the atmosphere, sea-ice and the polar oceans, and feedbacks between these domains play an important role in global climate. At the same time, the seasonal evolution of sea-ice [...] buoy systems to record key parameters in the ice-covered, central Arctic Ocean. The concurrent recording of physical, biological and biogeochemical measurements in the atmosphere, sea-ice and ocean for [...] Rabe +49(471)4831-2403 Benjamin.Rabe @ awi.de Deployment of an ocean profilers in the sea-ice (Photo: Alfred-Wegener-Institut)

. It also uncovers the various factors controlling this major Arctic surface current, including warmer temperatures which could increase the spread of human-made pollutants. The Transpolar Drift carries [...] suspended matter from the Siberian shelves across the central Arctic towards the Fram Strait channel, which connects to the Nordic Seas. This cross-Arctic flow influences the delivery of both natural [...] and heavy metals – from Siberian river systems into the central Arctic and the North Atlantic. This material affects Arctic biogeochemistry and ecosystems, while the fresh water itself alters ocean

Energy Budgets Schematics of energ fluxes in ice covered oceans (Photo: Stefanie Arndt, AWI) The radiation budget of sea ice dominates the sea-ice energy balance and the exchange of energy between the atmosphere and the ocean in ice-covered regions. We are focusing on solar short-wave radiation and work on quantifying the amount of sun light that is [...] high-quality and comprehensive data sets from remote regions of the Arctic and Antarctic. Contact: Dr. Marcel Nicolaus Dr. Ran Tao Surface albedo of ice-covered regions in the Arctic and Antarctic mostly

the Arctic Ocean. Additionally there is a strong change between 24 hours of light during summer and permanent darkness in polar night. Nature [...] the moorings and the Hausgarten into the Norwegian Sea and the Arctic Ocean. The Fram Strait connects the Arctic Ocean and the North Atlantic. Unlike the shallow water conjunction to the Pacific, this [...] deep and thus the main region for exchange of water between the Arctic and the global oceans. Due to its importance for the global ocean circulation the Fram Strait has long since been a focus area of

2045. During these 20 years, 10 year-long drift studies in the Arctic Ocean are planned. The work is based on the collaboration of an international and interdisciplinary consortium of more than 30 [...] J. Schmale, M. Flores, K. Law et al. Microbial life in Arctic sea ice M. Vancoppenolle, J. Deming, S. Rysgaard et al. Epi/meso-pelagic life in an ice covered ocean M. Geoffroy, I. Polyakov, M. [...] sea ice and pollution on unique and fragile ecosystems Observe Arctic fish stocks and the impact of the arrival of more temperate species Life in a frozen ocean: analogues to other ocean planets and

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 long-term observatory [...] Greenland. There they will investigate how the ecosystems of the Arctic deep sea are reacting to changing environmental conditions as a result of rapid climate change. The month-long expedition, which is [...] plankton communities in the open water and physical changes in the ocean.

Projects AFIN: Antarctic Fast Ice Network Changing Arctic Ocean SIN'XS-Sea Ice thickness INtercomparison eXerciSe Arctic Passion Tara Polar Station ESA: Climate Change Initiative MOSAiC [...] Mission Performance ArcSolution SNOWflAke IceBird Transdrift: Arctic Ice-Ocean-Interaction CONTRASTS

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 [...] characterize the key processes that determine the observed sea ice, ocean, and ecosystem changes in the Central Arctic Ocean during meltseason. The process studies and continuous observations of CONTRASTS [...] characterize the key processes that determine the observed sea ice, ocean, and ecosystem changes in the Central Arctic Ocean during melt season. We will investigate the causes and consequences of differences

‚FESOM-REcoM‘ and investigated its role in the fastest changing ocean in climate change, the Arctic Ocean. This research is continued as part of my PhD project, where I am investigating new arising habitats and carbon pathways in the future Arctic Ocean. Tanvi Nagwekar (PhD Student) I have a bachelor with Physics major and a master degree in Atmospheric Sciences. For my master [...] and provide a robust quantification of the coastal and open ocean carbon sink. Dr. Miriam Seifert (Postdoc) With a Master’s degree in marine biology and several field trips to the Arctic, I entered