specially adapted biotic community. Ice-covered seascape in the Arctic Ocean (Photo: Esther Horvath) The deep sea in the polar regions In the Arctic, living at the bottom of the sea poses unique challenges for [...] standards. For another, food is harder to come by. The central Arctic Ocean is largely covered with ice and – unlike the Antarctic’s Southern Ocean – surrounded by landmasses. Exchanges with the Atlantic and [...] than we do about the ocean depths. Yet the deep sea is not a habitat fully separated from the surface; it is already undergoing dramatic changes in response to warmer water, ocean acidification and en

frequency over a full annual cycle in the Central Arctic Ocean. They have now published three overview articles on the MOSAiC atmosphere, snow and sea ice, and ocean programs in the journal Elementa, highlighting [...] together. These results present the first complete picture of the climate processes in the central Arctic which is warming more than two times as fast as the rest of the planet - processes which affect weather

A main focus is to carry out multidisciplinary field studies and experimental work in the deep Arctic Ocean. In December 2008 a Joint Research Group for Deep-Sea Ecology and Technology of the Helmholtz [...] Marine Microbiology ( MPI-MM ) in deep-sea research, and to set up a new research focus on the deep Arctic Ocean. The Joint Research Group comprises the expertise of the MPI-MM in the area of marine microbiology [...] al projekts Find out more TECHNOLOGY Instruments and gears to facilitate research in the deep Arctic Ocean Find out more Section Head: Dr. Thomas Soltwedel Lead MPI-MM branch: Prof. Dr. Antje Boetius

each day for 1 year) - self contained vehicel (internal data storage to avoid problems with ice in arctic regions) - measure C,T and p with precision high enough to indicate convective events in polar regions [...] is placed onto the vehicle at the time a cast shall start, and it is removed when it reaches the ocean bottom. The vehicle itself is balanced to posess some buoyancy and to swim up by itself, finally reaching

vessel Icebreaker Expedition New Polarstern The Research Vessel Polarstern has been underway in the Arctic and Antarctic for 40 years, giving experts from around the globe the opportunity to safely and e [...] The goal is to find solutions for preserving the ecological equilibrium of the polar regions and oceans for future generations. The requirements profile reflects the lessons learned over the Polarstern’s

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

Extent of the Arctic ice sheets during the last glacial (Graphic: Catalina Gebhardt) In contrast to the continent Antarctica, the Arctic region consists of a large marine basin. Therefore, Arctic ice sheets [...] Siberia-Chukchi Ice Sheet. During their maximum extent, these ice sheets reached far into the Arctic Ocean, and signs of glacial overprint can be found as far north as at the North Pole. Many studies have [...] sheet is found on Greenland, but in the past, several other ice sheets covered large areas of the Arctic realm. The most important ones were the Laurentide Ice Sheet on North America, the Svalbard-Barents

already impacting the modern ocean. To recognize changes and predict the future ocean, ocean color (OC) remote sensing aims at quantifying and monitoring optically active oceanic constituents such as phytoplankton [...] 2.2 Ocean color remote sensing 2.2 Ocean color remote sensing Ocean color (OC) remote sensing (Mobley, 1994; Mobley et al., 2021) refers to the dis- cipline that infers information on the ocean from optical [...] c CO2 was taken up by the ocean (Friedlingstein et al., 2019). As a consequence, the ocean is warming, sea levels are rising, sea ice concentrations are declining, and ocean acidity is enhancing (IPCC

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