Arctic Ocean
The sea ice extent in the Arctic Ocean reached its annual minimum of 4.81 million square kilometres on 12 September 2021. As such, the 2021 Arctic sea-ice minimum comes in at 12th place on the negative list for absolute values. Sea ice extent in September is one of the strongest

and the Frontiers in Arctic Marine Science (FRAM) observatory, which are distributed across the Weddell Sea and Fram Strait, respectively. See the maps to the [...] all sites are equipped with recorders at all time. Maps of the Arctic and Antarctic with underwater sound recording sites occupied by the AWI Ocean Acoustics group since 2006. PALAOA (PerenniAL Acoustic [...] Spitsbergen and Greenland. Further moorings in the adjacent Arctic Ocean extend this array slightly to the North. MAP of FRAM moorings hosting PAM recorders an AZFPs. Please note, that not all

. Contact: T. Soltwedel ArcticROOS (Arctic Regional Ocean Observing System) Project within the GOOS/EuroGOOS initiative Since 2006 Coordinator: Stein Sandven, Nansen Environmental and Remote Sensing Center (NERSC), Norway An Arctic Regional Ocean Observing System ( ArcticROOS ) working with ocean observation and modelling systems for the Arctic Ocean and adjacent seas has been established within the EuroGOOS initiative. ArcticROOS will promote, develop and maintain operational monitoring and forecasting of ocean circulation, water masses, ocean surface

ocean floor of the East greenland shelf. (Photo: Maciej Telesinski) [29 August 2017] Temperatures in the Arctic are currently climbing [...] in a glacial climate state. doi: 10.1038/NGEO2974 . How the Arctic Ocean became saline FS Heincke in Spitsbergen (Photo: Alfred-Wegener-Institut) [06 June 2017] The Arctic Ocean was once a gigantic [...] Jokat, Gregor Knorr, Gerrit Lohmann: Threshold in North Atlantic-Arctic Ocean circulation controlled by the subsidence of the Greenland-Scotland Ridge. Nature Communications. doi: 10.1038/NCOMMS15681 .

Seismic station installed on drifting sea ice In the ice-covered Arctic Ocean we also use seismic land stations deployed on drifting ice floes to record small earthquakes. We optimized this method and

Arctic Ocean
In the summer months, sea ice from the Arctic drifts through Fram Strait into the Atlantic. Thanks to meltwater, a stable [...] Wegener Institute has now determined with the aid of the FRAM ocean observation system. Their findings have just been published in the journal Nature Communications.

Arctic Ocean
The dramatic loss of ice in the Arctic is influencing sea-ice transport across the Arctic Ocean. As experts from the Alfred [...] sea ice that forms in the shallow Russian marginal seas of the Arctic Ocean actually reaches the Central Arctic, where it joins the Transpolar Drift; the remaining 80 percent of the young ice melts [...] not only takes us one step closer to an ice-free summer in the Arctic; as the sea ice dwindles, the Arctic Ocean stands to lose an important means of transporting nutrients, algae and sediments. The

mankind, is exceedingly difficult. The study of atmospheric, open ocean, deep sea or even processes in shallow coastal waters require sustained long-term observations often deploying sophisticated, costly [...] jointly generate a particularly large set of time series, in the Arctic, Antarctic as well as the North Sea. These data are used in the context of AWI research programmes, but also in a range of external [...] III) Infrasound (Neumayer-Station III) Biology North Sea Arctic (Fram and Svalbard) Antarctic Oceanography Arctic Time series Antarctic time series Terrestrial time series Samoylov Bayelva

Research
Despite global warming and the sea-ice loss in the Arctic, the Antarctic sea-ice extent has remained largely unchanged since 1979. However, existing climate model-based simulations indicate [...] As experts from the Alfred Wegener Institute have now shown, the ocean may weaken warming around Antarctica and delay sea-ice retreat. Given that many models are not capable of accurately reflecting this factor and the role of ocean eddies, the study, which was just published in the journal Nature Communications , provides the basis for improved simulations and

Massive sponge gardens thrive on top of seamounts in the Central Arctic Ocean, one of the most oligotrophic seas on Earth. They appear to feed on the remnants of an extinct fauna. Microorganisms support [...] for a better understanding of the diversity and uniqueness of Arctic ecosystems in the light of global and local change.