under pressure. However, jellyfish in the world’s oceans could actually benefit from the rising water temperatures – also and especially in the Arctic Ocean, as researchers from the Alfred Wegener Institute [...] Institute have now successfully shown. In computer models, they exposed eight widespread Arctic jellyfish species to rising temperatures, sea ice retreat and other changing environmental conditions. The result: [...] triple the size of its habitat – with potentially dramatic consequences for the marine food web and Arctic fish populations. The study was just released in the journal Limnology and Oceanography.

Antarctic ice-bed-ocean interfaces , Nature Communications, 9, doi: 10.1038/s41467-018-04583-0 . Stärz, M. , Jokat, W., Knorr, G. and Lohmann, G. (2017): Threshold in North Atlantic-Arctic Ocean circulation [...] doi: 10.1038/ncomms15867 . Stein, R., Fahl, K., Gierz, P. , Niessen, F. and Lohmann, G. (2017): Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial , Nature Communications [...] , Jokat, W. and Lohmann, G. (2016), Evidence for ice-free summers in the late Miocene central Arctic Ocean , Nature Communications, 7, pp. 1-13, doi: 10.1038/ncomms11148 . Abelmann, A., Gersonde, R. ,

With our model we investigate interactions between permafrost, vegetation, snow, lakes, and the Arctic ocean. Furthermore, we use our models to gain insights into important ecosystem functions such as the [...] climatic conditions. The models allow us to investigate impactsof past and future climate changes in the Arctic. Since permafrost is usually not visible at the earth’s surface and only few measurement sites exist [...] current state of permafrost. Furthermore, permafrost models give us insights into the evolution of Arctic landscapes and help us understand how these unique ecosystems respond to natural and human-caused

Nippon Foundation (NF) Ocean Affairs Department, Prof. Dr Antje Boetius, as AWI Director, Dr Sophie Seeyave, representative and CEO of the Partnership for Observation of the Global Ocean (POGO), and State Secretary [...] Centre of Excellence, around half returned to their home countries, while the others moved on to the Arctic, the Antarctic, Canada, Australia, the Netherlands or Ireland, and some stayed in Germany at the [...] we will all remain connected in the future - as researchers and as people who are committed to our oceans in times of climate change. Pedro Montoro (alumni) I am Pedro Montoro, originally from Cuba and attended

For the past 25 years, the Alfred Wegener Institute has operated a long-term observatory in the Arctic deep sea: the HAUSGARTEN. Located between Greenland and Svalbard, it is where researchers investigate [...] investigate natural and climate-change-related changes in a polar, marine ecosystem – from the ocean’s surface to the seafloor, 5,500 metres below. Many of the observatory’s stations are located below the sea

Sea-ice algae The seasonal extent and properties of Arctic ice on land and in the ocean determine the efficacy of the albedo feedback mechanism causing arctic climate amplification. Various ice types are inhabited [...] Sampling and analytical strategy to investigate taxonomic and functional ice algae composition in the ocean and lakes. (Photo: Alfred-Wegener-Institut) High-resolution reconstruction of regional climate changes [...] Interdisciplinary research projects at the interface between natural science and data science Topic A: "Arctic Environmental Data Analytics"– Gregor Pfalz Topic B: "Data fusion using remote sensing data and

y in the Arctic Ocean may transition from being predominantly light-controlled to being more nutrient-controlled. Also, the phenomenon of ocean acidification is most pronounced in the Arctic due to the [...] temporal scales of phyoplankton activity (Graphic: Phytochange) Focus – The Arctic is warming faster than any other oceanic region of the planet and its sea-ice cover is declining faster than models predict [...] e Lüdeling) FRAM - Our Work group is also involved in the context of the Arctic long-term observatory FRAM (Frontiers of Arctic Monitoring) . Based on innovative developments as well as approved technologies

ultraslow mid-ocean ridge?, doi: 10.1002/grl.50329 Schlindwein et al., 2014: Seismicity of the Arctic Mid-Ocean Ridge system, doi: 10.1016/j.polar.2014.10.001 Schlindwein and Schmid, 2016: Mid-ocean-ridge seismicity [...] Corela et al., 2023: The effect of deep ocean currents on ocean- bottom seismometers records, doi: 10.5194/nhess-23-1433-2023 Czuba et al., 2011: Continent-ocean-transition across a trans-tensional margin [...] , 2016: Thickness of the oceanic crust, the lithosphere, and the mantle transition zone in the vicinity of the Tristan da Cunha hot spot estimated from ocean-bottom and ocean-island seismometer receiver

under the snow and ice cover of the Arctic Ocean. The results of the study now published in the journal Nature Communications show that photosynthesis in the ocean is possible under much lower light conditions [...] low light levels. This is the result of an international study that investigated the development of Arctic microalgae at the end of the polar night. The measurements were carried out as part of the MOSAiC

Polarstern returns from the “Trans-Arctic Survey of the Arctic in Transition” (TransArc) expedition, intended to record physical, biological and chemical changes in the Arctic Ocean. One highlight of the expedition: [...] 2012-10.2012 – During the Polarstern’s 27th stay in the Arctic and in the context of the “Sea ice - ocean - seafloor interactions in the changing Arctic” (IceAr) expedition, e.g. long-term changes in this [...] on yet another Arctic expedition – its 29th. The expedition, officially designated “Transitions in the Arctic Seasonal Sea Ice Zone” (TRANSSIZ), was planned by the international “Arctic in Rapid Transition”