forecasts Cyril Palerme, Malte Müller, Arne Melsom Evaluation of the ice edge position in the European Arctic - Several verification scores have recently been suggested for evaluating the ice edge position - [...] between the ice edge lengths from the two data sets (observations and forecasts) Melsom et al., 2019 (Ocean Science) Influence of the length of the ice edges on the verification scores ⇒ The SPS is correlated [...] l Research Letters, 46, 4757–4763 23 Slide 1 Evaluation of the ice edge position in the European Arctic Datasets Sea ice probability (SIP) Modified Hausdorff Distance (MHD) Spatial Probability Score (SPS

the Eurasian shelf seas. Ocean waters with salinities below the average salinity of the Arctic Ocean also contribute positively to the fresh water balance of the Arctic Ocean. Such waters flow in from [...] er-Institut) Figure 1: Surface circulation of the Arctic Ocean (Graphic: Alfred-Wegener-Institut) Figure 2: Mid-depth circulation in the Arctic Ocean, which is fed from the Atlantic. 129 Iodine releases [...] blue line shows the total Arctic (liquid + sea ice) freshwater content (integrated in the area in blue on the map) (Graphic: T. Kovacz, Alfred-Wegener-Institut) The Arctic Ocean receives freshwater by run-off

these algae. This also means that the decline of the Arctic sea ice may have far-reaching consequences for the entire food web of the Arctic Ocean. Their results have been published online now in the journal [...] Food web
Algae that live in and under the sea ice play a much greater role for the Arctic food web than previously assumed. In a new study, biologists of the Alfred Wegener Institute, Helmholtz Centre

impacts of changes to the Arctic marine environment and identify key socio-economic vulnerabilities and opportunities globally and regionally for the Arctic To value the impacts of Arctic-related climate change [...] IceArc: Arctic Ice Climate and Economics The project The ICE-ARC project aims to understand and quantify the multiple stresses involved in the change in the Arctic marine environment. Particular focus [...] focus is on the rapid retreat and collapse of the Arctic sea ice cover and to assess the climatic (ice, ocean, atmosphere and ecosystem), economic and social impacts of these stresses on regional and global

airborne survey in the Arctic , AWI, press release Time surveys and neckties at Dinner , New York Times The Tech Ice Hunters Use to Track the Arctic Melt , Wall Street Journal Measuring Arctic Ice Melt from the [...] erived radar freeboard of Arctic sea ice. Geophysical Research Letters , 50, e2022GL100696. doi.org/10.1029/2022GL100696 Shi, H. et al . (2023), Estimation of Arctic Winter Snow Depth, Sea Ice [...] Mamnun, N. , Liu, X. and Nerger, L. (2023): Improving Arctic sea-ice thickness estimates with the assimilation of CryoSat-2 summer observations , Ocean-Land-Atmosphere Research, 2 . doi: 10.34133/olar.0025

flux in polar oceans In both Polar Regions, areas covered by sea ice are shrinking due to climate warming. What are the consequences of sea ice decline in the Arctic and the Antarctic Ocean? Answering this [...] and nature conservation in the Arctic and Antarctic Oceans under environmental change. The research project investigates ice-covered deep-sea ecosystems in the Arctic and Antarctic sea ice zones. Iceflux

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 [...] in the oceans is a current and growing problem, since every year several million metric tons of plastic find their way from the land to the water. Plastic particles are broken down in the ocean by sunlight [...] Climate change is especially putting the polar regions under pressure. Environmental changes in the Arctic result primarily from the decline in the area of sea ice and the decrease in its thickness, since

to-measure ecosystem processes from the water’s surface to the deep seas of the Antarctic and Arctic Oceans using marker pigments. After completing her PhD, from 1998 she worked at Scripps Institution of [...] microplastic in Arctic sea ice in 2018, which attracted considerable media attention, Ilka Peeken has given frequent interviews and talks at events and in schools. Furthermore, she advises the Arctic Council on [...] Kiel, where, until 2008, she studied the effect of the micronutrient iron on algae in the Southern Ocean (in-situ iron fertilisation experiments “EisenEx” and “EIFEX”). In addition, she focused on which

species we work with in the Southern Ocean are krill, specifically Antarctic krill, Euphausia superba and the gelatinous pelagic tunicate Salpa thompsoni . In the Arctic Ocean, we work with the krill species

AWI researcher Melanie Bergmann has now analysed in detail the level of pollution on the ocean floor of the Arctic. The results are disquieting. When AWI marine biologist Melanie Bergmann is out at sea, [...] displays a new photo, a snapshot from the depths, a new glimpse of the Arctic seafloor. The photos are produced by the OFOS (Ocean Floor Observation System) – a heavy steel frame that the ship slowly tows [...] It may be transported to the Arctic from the more populated North Atlantic; or it could be from the ships that are now venturing farther and farther northwards as the Arctic’s sea-ice cover recedes. “Unlike