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

Arctic cod is the most abundant fish in the Arctic Ocean. It is an important food source for Arctic marine mammals and plays an important role in the self-sufficiency of the Inuit. An international study [...] now evaluated the most important scientific work on Arctic cod of the past decades. The conclusion: Above all, the already advanced decline in arctic sea ice cover as a result of man-made climate change

e himself in a Polarstern mission to the Arctic. As Airbus project manager, he tested the Viator lander-crawler system of the Geomar Helmholtz Center for Ocean Research on expedition PS108. Also part of [...] Sciences (Marum) glides through the depths like a glider to conduct gas hydrate measurements in the ocean. Detlef Wilde T: +49 (471) 4831-1281 E: detlef.wilde@awi.de Timeport II, 2. OG Barkhausenstr. 2 27568 [...] of the Alfred Wegener Institute will be able to operate year-round in all ice conditions in the Arctic and Antarctic. As an ambassador for sus- tainability in shipping, the new Polarstern will itself

Due to intensifying sea-ice melting in the Arctic, sunlight is now penetrating deeper and deeper into the ocean. Since marine zooplankton respond to the available light, this is also changing their behaviour

After eventful and busy months, the Arctic season ends this weekend with the Polarstern expedition called ArcWatch-1. The team of almost 100 crew and scientists measured sea ice thickness and properties [...] properties, recorded the currents and chemical properties of the ocean and investigated life in and under the ice, in the open water and at the bottom of the deep sea. Their data show significant changes compared [...] on 20 September there was the world's first livestream of an ROV under-ice dive from the Central Arctic.