Institute and Professor at the University of Bremen. Ocean currents Ocean topography of polar regions Ocean-ice sheet interaction Sea level Ocean currents play various important roles in the climate and in ecosystems [...] the two polar regions makes the Arctic and Southern Oceans key regions in the context of ocean circulation. At the AWI, we investigate the characteristics and role of ocean currents through interdisciplinary [...] mid-latitudes to the Arctic and Antarctic. Once there, this heat can delay the formation of sea ice or cause the floes to melt more rapidly. This applies to the ice covering the Arctic Ocean, as well as to the

he and his team have not only developed and refined high-resolution ice-atmosphere or ocean-ice models for the Arctic. The AWI climate modellers participate also with their own global climate model in large [...] Report. In parallel, Thomas Jung is investigating in various projects how the climatic changes in the Arctic affect extreme weather events in Central Europe and what impact today’s heat waves or heavy rainfall

Polar bear mother and cup in the Arctic ocean Automatic Marine Mammal Mitigation by Infrared Imaging Use of loud seismic airguns and naval sonars in marine surveys is feared to potentially injure whales [...] adjustment. ARK 27.3 Aug - Oct 2012 1563h operational Operation of FIRST-Navy infrared imager in the Arctic Ocean. (+) Successful operation of sensor for entire expedtion without any member of the IR team on [...] hindrance which is less prevalent in off-shore seismic and renewable energy construction settings. Arctic Ocean PS101 Sep-Oct 2016 Ship based operation of FIRST-Navy infrared imager on RV Polarstern. (+) O

international research vessels. Her recent research focuses on the effects of climate change on the Arctic Ocean and the biodiversity of the deep sea. She is the recipient of the DFG's Gottfried-Wilhelm-Leibniz [...] focuses on questions of the impact of climate change on the biogeochemistry and biodiversity of the Arctic Ocean and other deep- sea regions. She has been awarded the ERC Advanced Grant of the European Research [...] institutes, she established and headed a research group for the study of microbial habitats in the ocean at the Max Planck Institute for Marine Microbiology from 2003 to 2008. Since 2008, she leads the

Research aircraft from the Alfred Wegener Institute have been surveying the ice-covered Arctic Ocean for 30 years. The immense effort of the past 52 expeditions has paid off: 40,000 km of measurement data [...] aeroplane- and helicopter-based measurement series in the world that has been carried out in the Arctic over such a long period. Currently, two Basler BT-67 aircraft are in operation: the Polar 5 and Polar

the Arctic Ocean. The four-week expedition, slated to end on 19 July in Tromsø, Norway, will focus on extended ecological fieldwork at the AWI’s deep-sea observatory Hausgarten and at the FRAM Ocean Observing

Coastal Ocean Dynamics Helgoland Time-Series Coastal Ocean Dynamics Helgoland Time-Series – What are the drivers? • CTD • Turbidity • Fluorescence • PAR • Wind • pCO2 • O2 • ADCP Coastal Ocean Dynamics [...] Productivity & Efficiency of the Biological Carbon Pump and Biodiversity in the present and future ocean. Mission: From Physics to Fish • Increasing human activities and climate change have been shown as [...] 7° 52.788‘E Background…where it all started Background…where it all started Challenges of Coastal Ocean Observations: • Biofouling • Turbidity: Long distance between Camera & Strobe • Limited data sets

the buoyancy and stickiness of floating microplastic particles leading to an export to the deeper ocean and sediments. Meanwhile, scientists and authorities worldwide have recognized the massive accumulation [...] stipend), Sebastian Primpke and Gunnar Gerdts) Fram Pollution Observatory / Microplastics in the Arctic (in-house project; PIs: Melanie Bergmann, Ilka Peeken and Gunnar Gerdts) “Microplastics Reactor” [...] Defining the baselines and standards for microplastics analyses in European waters); www.jpi-oceans.eu/ecological-aspects-microplastics (PIs: Sebastian Primpke and Gunnar Gerdts) WT.SH project “Size

of sea ice retreat on the entire ocean system from the surface to the deep sea. Eleven years ago, Antje Boetius was part of the largest ever sea ice minumum in the Arctic and its consequences for life in [...] the North Pole. For two months, a good fifty scientific expedition participants will explore the Arctic in transition as sea ice extent reaches its annual minimum in September. They will explore the biology [...] in the deep sea. Now she is returning with her team to compare the state of the Arctic today - also with the data from the MOSAiC expedition 2019/20.

Rachold /AWI) (Photo: Alfred Wegener Institut) What is submarine permafrost? Subsea permafrost in the Arctic is generally relict terrestrial permafrost, inundated after the last glaciation and now degrading [...] Beaufort Sea, we know little about the distribution of submarine permafrost for most of the shallow Arctic Shelf, over 80% of which lies offshore of Eastern Siberia. Degradation rates of the ice-bearing [...] concentration. We need to know more about the current distribution and state of permafrost beneath the ocean, about what cause sit thaw, where and how quickly. This group addresses key questions surrounding