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

. Under conditions of further warming and acidification of the ocean, Atlantic cod and its arctic relative polar cod would be forced to look for new habitats in the far north. Their populations could [...] disastrous, as the polar cod is the most important food source for Arctic seals and seabirds. In addition, fishers could lose the world’s most productive area for catching Atlantic cod, located to the north

vertical profiles of water mass properties in the ice-covered oceans. The systems are moored on the ice and measure temperature, salinity, and pressure in the upper 800 to 1000 meters of the water [...] example, to study changes in the freshwater content of the upper Arctic Ocean, as in the NORTHATLANTIC project. Together with higher-precision data from ship-based expeditions, the data from these autonomous [...] measuring systems is coordinated through the International Arctic Buoy Programme. Contacts Dr. Benjamin Rabe +49(471)4831-2403 Benjamin Rabe@awi. Dr. Mario Hoppmann +49(471)4831-2907 Mario.Hoppmann

in Northern European Waters) is a European project funded by JPI Oceans and will create new knowledge and improve our mechanistic understanding of the sources, transport, occurrence, and fate of small microplastics from European waters to the Arctic. The consortium consists of 15 partners in 7 countries, with more than 50 people involved in the research activities.

Anniversary
40 years of research in the Arctic, Antarctic and in coastal regions: on 15 July, the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) [...] for climate research in the two polar regions and the world’s oceans.

An entire year trapped in the Arctic ice MOSAiC - Multidisciplinary drifting Observatory for the Study of Arctic Climate It is the largest-scale Arctic research expedition [...] , the German research icebreaker Polarstern drifted through the Arctic Ocean, trapped in the ice. Participants from institutions from more than 20 countries studied the Arctic over the course of the year [...] for miles. Hardly any other region has warmed as much as the Arctic in recent decades. Therefore, the MOSAiC project's goal was to reach a better understanding of the influence that the Arctic has on

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 .

mapping initiatives including the General Bathymetric Chart of the Oceans (GEBCO) , the International Bathymetric Chart of the Arctic Ocean (IBCAO) ,the International Bathymetric Chart of the Southern Ocean [...] 2030) , a project with the ambitious goal to map the world’s oceans by 2030, and hosts the Seabed 2030 Southern Ocean Regional Center (SORC) . SORC’s and IBCSO’ s responsibility is to produce the best possible authoritative map of the Southern Ocean, the South Atlantic, South Pacific, and South Indian Ocean south of 50°S. The maps we produce are all publicly available in PANGAEA

. Plastic particles are broken down in the ocean by sunlight, temperature fluctuations, mechanical abrasion and wave action into small fragments known as microplastics. These tiny [...] (Video) | 25.04.2018 Plastic pollution: record levels found in Arctic sea ice Find out more > BBC | 24.04.2018 Record concentration of microplastics found in Arctic Find out more > Dialogue & Lectures Policy advice Arctic Monitoring & Assessment Programme (AMAP) Member of the Expert Group on Microplastic Monitoring in the Arctic

just snow. There are clear differences if you compare, e.g., the Arctic and Antarctic. While the snow on the Arctic sea ice is completely melting over the course of the year, and so-called meltwater ponds [...] global warming, which means that in the future, in the Southern Ocean, the snow cover might also start melting significantly during summer. Today, we are already observing a seasonal change in the snow [...] it insulates, and as such reduces the transfer of heat from the ocean to the atmosphere. However, the less warmth the ocean gives off, the thinner the sea ice remains. Therefore the snow not only