study of Arctic Ocean surface sediments (Fig. 2; Xiao et al., 2015 ). During the last years, a large number of IP 25 /PIP 25 studies have been carried out to reconstruct the late Quaternary Arctic sea-ice [...] Polar sea ice variability - Arctic Our ability to quantitatively reconstruct Arctic paleo-sea-ice distributions has been greatly improved by a novel biomarker approach which is based on the determination [...] SeaIce4). In order to fully establish the IP 25 approach as key proxy for the reconstruction of past Arctic Ocean sea-ice conditions, however, more ground-truth data related to the synthesis, diagenesis, and

diatoms (diatoms) to reconstruct sea ice cover. Projects Arctic Ocean Arctic Ocean mean sea ice concentration (Graphic: NSIDC) Southern Ocean Southern Ocean mean sea ice concentration (Graphic: NSIDC) [...] sea ice extent and thickness have a strong influence on albedo, the hydrologic cycle, ocean and air currents, ocean-atmosphere energy exchange, water mass stratification and formation, and biological p [...] ice variations is a significant prerequisite for understanding the interactions between the ice, ocean, and atmosphere and their influence on climate change. AWI has a long-standing expertise in micro

Arctic Ocean
The influx of warmer water masses from the North Atlantic into the European marginal seas of the Arctic Ocean plays a significant role in the marked decrease in sea-ice growth, especially [...] evident a year later, when the ice has drifted towards Greenland via the North Pole and leaves the Arctic through Fram Strait. This study also includes data from the MOSAiC expedition.

increased to 1 km in the whole Arctic Ocean and further refined to subkilometer scales at the MOSAiC sites. The decades-long eddy-resolving model results for the Arctic Ocean and the well-evaluated and documented [...] Changing Arctic" (EPICA) is a BMBF funded project that will use high-resolution modeling and observations to understand the properties and impacts of (sub)mesoscale eddies in the Arctic Ocean, especially [...] eddies are important features that shape the ocean hydrography and influence the mixed layer dynamics. However, their properties and precise roles in the Arctic Ocean are still poorly understood, with serious

Pacific sector of the Southern Ocean: implications from sedimentological and geochemical analysis Shuzhuang Wu: Linking Southern Ocean sediment processes to changes in ice-ocean-atmosphere dynamic List of [...] Kolling: Decadal to centennial variability of (sub-)Arctic sea-ice distribution and its paleoenvironmental significance Anne Kremer: Natural variability of Arctic sea ice and its significance for global climate [...] sediment core University of Bremen FB5 O. Esper Description (in German) The Role of High Latitudes Oceans in Climate Change University of Bremen R. Stein, J. Müller Description Clastic Sedimentology: Coast

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

Alfred-Wegener-Institut) In contrast to the continent Antarctica, the Arctic region consists of a large marine basin. Therefore, Arctic ice sheets are located on its surrounding land masses. At present, the [...] 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 (North America), the Svalbard-Barents

deep Arctic Ocean. Deep-Sea Research I 73(3): 31-45. Freese, D., Schewe, I., Kanzog, C., Soltwedel, T., Klages, M. (2012): Recolonisation of new habitats by meiobenthic organisms in the deep Arctic Ocean: [...] small benthic biota to decreasing food availability, which is a common scenario for the changing Arctic Ocean, we installed cages (2 x 2 m in dimension, 50 cm in height) at the deep seafloor (2500 m water [...] (2009): Response of benthic microbial communities to chitin enrichment: an in-situ study in the deep Arctic Ocean. Polar Biology 32(1): 105-112. Gallucci, F., Fonseca, G., Soltwedel, T. (2008): Effects of megafauna

roughly two-thirds of global sea-level rise; the remaining third is primarily due to the warming of the oceans, which causes seawater to expand. Accordingly, the development of our planet’s ice sheets and glaciers [...] and that ice-loss processes have been set in motion that will have lasting consequences. In the Arctic, temperatures are rising twice as quickly as the global average; as a result, the Greenland ice sheet’s

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