more dynamic Arctic sea ice and larger open ocean areas increase the complexity of accurately predicting the transport pathways and impacts of various pollutants in the Arctic environment. These pollutants [...] project we will simulate the oceanic advection of pollutants from their sources with a global version of the sea-ice-ocean model FESOM2 with about 7 km spatial resolution in the Arctic and Nordic Seas. Atmospheric [...] relevant to Arctic ecosystems. . The sea ice-ocean model FESOM2 will be coupled with the atmospheric chemistry transport model DEHM (Danish Eulerian Hemispheric Model), thus connecting the ocean and atmospheric

Projects AFIN: Antarctic Fast Ice Network Changing Arctic Ocean SIN'XS-Sea Ice thickness INtercomparison eXerciSe Arctic Passion ESA: Climate Change Initiative MOSAiC S3MPC-Sentinel-3 Altimetry Mission [...] Mission Performance ArcSolution SNOWflAke IceBird Transdrift: Arctic Ice-Ocean-Interaction

coupled Arctic climate system with the overall aim to (i) improve our understanding and model representation of key climate processes in the Arctic and (ii) to improve our understanding of Arctic – midlatitude [...] the observed drastic Arctic climate changes and the uncertainty in Arctic climate projections is large. That arises, in large part, from gaps in our understanding of key Arctic processes and feedbacks [...] national and international research projects, such as AC3 , REKLIM , Arctic CORDEX , PolarRES , and WarmWorld . Background The phenomenon of Arctic amplification has a suite of causes, which include various i

l factors to explore the ecological role of marine mammals in the Arctic Ocean. Data stem from the interdisciplinary Arctic FRAM ocean observatory, which provides a unique opportunity to gain insight into [...] distribution patterns of marine mammals in polar seas. During my PhD I am analyzing polar ocean (Southern Ocean and Arctic Ocean) passive acoustic monitoring data to investigate the influence of the three soundscape [...] into these interrelationships. I strongly believe that a holistic understanding of the Arctic Ocean ecosystem is essential in view of future management and conservation strategies to preserve this unique

Long-term observations in the Arctic Ocean Schematic of ocean circulation between the Arctic and neighbouring oceans: warm water paths (red), cold/fresh polar water paths (blue), regions of AWI focus in [...] circulation in the Eurasian Basin of the Arctic Ocean from the 1990s to the late 2000s ,OS Special Issue: Ice-Atmosphere-Ocean interactions in the Arctic Ocean during IPY: the Damocles project, 9 (1), [...] Fram Strait / West Spitsbergen Atlantic Water is the main oceanic source of heat, salt, and nutrients of the Arctic Ocean. It enters the Arctic Ocean through the Barents Sea or Fram Strait. In the eastern

from the Arctic reservoir. Long-term observations in the Arctic Ocean by a multitude of observational platforms allow estimates of annual mean liquid freshwater content in the upper Arctic basins (Figure [...] Central Arctic long-term observations [Translate to English:] Anomalies of annual mean liquid freshwater content in the upper Arctic Ocean basin from salinity profile observations since 1992. Liquid freshwater [...] linear trend is 600+-300 The central Arctic is an important component of the global climate system, not only by atmospheric teleconnections but also by links in ocean circulation to lower latitudes. There

current long-term observations Atlantic Water is the main oceanic source of heat, salt, and nutrients of the Arctic Ocean. It enters the Arctic Ocean through the Barents Sea or Fram Strait. In the eastern [...] recirculates to the western Fram Strait on timescales of several months while the rest enters the Arctic Ocean and follows a cyclonic circulation for years to decades. The AWI long-term observations in Fram [...] around 4°C since. Two anomalous warm events occurred in fall 2006 and in late winter 2012. In the deep ocean, it was also observed that the two water masses present there (the warmer Eurasian Basin Deep Water

backbone of the Global Ocean Observing System (GOOS) is the Argo system, which uses an array of >3000 profiling floats (Figure 2). Until recently, Argo was restricted to ice free oceanic regions, as the floats [...] Technology and Logistics Observations of the ocean’s temperature and salinity at different locations and depths – key parameters to assess its state - depended until recently on ship-based expeditions [...] and deep-sea moorings, limiting our ability to monitor oceanic change at adequate resolution and over necessary periods in time and space. However, with the turn of the century, automated systems gained

developments well in advance Find out more The pulse of the Arctic The ‘Arctic PASSION’ project provides environmental data from the Arctic for the local population, for science and for local politics [...] Using Knowledge to Combat Plastic Litter Plastic has reached even the most remote corners of the ocean. The AWI is not only investigating the scale and impacts of the problem; it's also contributing the [...] politics Find out more Putting permafrost in the classroom The Arctic’s frozen soils are thawing – with consequences for climate and humans. Together with partner schools in Germany, schoolchildren from Aklavik

1126/science.adp3491 Gou, R., K. Wolf, C. Hoppe, L. Wu, G. Lohmann, 2025: The changing nature of future Arctic marine heatwaves and its potential impacts on the ecosystem. Nature Climate Change, doi.org/10 [...] Lohmann G, Boers N, Daniau AL, Oliveira RS, Campos MC, Shi X, De Oliveira PE, 2014: Slowdown of ocean circulation increases the vulnerability of northern Amazon forests. Nature Geoscience 2024. DOI: 10 [...] and M. Kucera, 2023: Plankton biogeography shows strong meridional variation in ice age to modern ocean warming. Nat. Geosci., DOI:10.1038/s41561-023-01328-7 2022 Pontes, G., A. Taschetto, A. Sen Gupta