Young Investigator Group Silicic acid Decline Effect on Marine Arctic Ecosystems SideEFFECT (Graphic: Mar Fernández-Méndez) Human-induced climate change is altering the ocean on a previously unimaginable [...] Arctic Ocean in recent decades. This will affect the carbon uptake capacity of primary producers and the composition of their communities [...] is to understand the consequences of silica decline for the Arctic marine ecosystem and the mechanisms responsible. To understand how climate change affects the Arctic Ocean, we will combine novel

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10.1126/science.adq7280 . Wang, Q., S. Danilov, and T. Jung, 2024: Arctic freshwater anomaly transiting to the North Atlantic delayed within a buffer zone. Nature Geosci ., 17 , 1218–1221, doi.org/10.1038 [...] . Mueller, D. Sidorenko and T. Jung, 2024: Eddy activity in the Arctic Ocean projected to surge in a warming world . Nature Climate Change , 14 , 156–162, doi.org/10.1038/s41558-023-01908-w . Koldunov, [...] , S. Danilov, Q. Wang and T. Jung, 2022: Long-term evolution of ocean eddy activity in a warming world. Nature Climate Change , 9 , 910–917, doi.org/10.1038/s41558-022-01478-3 . Rackow, T., S. Danilov

Polarstern The Research Vessel Polarstern has been underway in the Arctic and Antarctic for 40 years, giving experts from around the globe the opportunity to safely and effectively conduct research in two [...] preserving the ecological equilibrium of the polar regions and oceans for future generations. The requirements profile reflects the lessons learned over the Polarstern’s nearly 40 years of service. The

rising temperatures are melting more and more frozen ground in the Arctic. This dissolved matter contains large amounts of organic carbon which is flowing into the central Arctic ocean. In a new study, [...] how much terrestrial organic matter accumulates in the central Arctic Ocean. Using chemical fingerprints, they were able to assess how fast it degrades, thus releasing additional CO2 to the ocean. These [...] are an important basis to project how inputs from land affect Arctic marine ecosystems and the ability of the ocean to store CO2 in a warming climate. The results are published in the journal Nature

majority of the exchange processes between the atmosphere and the ocean. The observed sea ice changes affect the climate and ecosystem, extending to our latitudes. The decline of Arctic sea ice in area [...] more > The Barents Observer | 28.07.2020 Sea ice extent in the Arctic reaches historical low in July Find out more > Carbon Brief | 18.11.2019 Inside MOSAiC: How a year-long Arctic expedition is helping [...] Keynote speech | 3.11.2021 Keynote speech on MOSAiC – the greatest Arctic expedition of our time 2021 United Nations Climate Change Conference Policy advice

Physics, Markus Rex led the MOSAiC-Expedition , the largest Arctic research expedition of our time, during which the research vessel “Polarstern” was frozen in the Arctic ice for a year to study the [...] . Scientists from 20 nations collected valuable data about the Arctic, which is crucial for understanding the future climate change. In the SR3 podcast “Aus dem Leben”, Markus Rex reports on his [...] and regulating the exchange of heat and moisture between the ocean and the atmosphere, explains Prof. Christian Haas. Changes in the extent and thickness of sea ice therefore serve as important

north of Greenland was the area of study in the last of three Arctic expeditions undertaken by the Polarstern since the end of May 2025. In the largely untraveled waters north and northeast of Greenland [...] the Alfred Wegener Institute were able to collect unique data on ocean circulation in the area. A chain of six moorings was also deployed to conduct autonomous measurements over the course of a full year

MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) expedition between the autumns of 2019 and 2020. For a year, the research ship drifted through the Arctic, frozen in ice. [...] gain a better understanding of the complex interaction between the ocean, the ice, the atmosphere and the ecosystem. Through the MOSAiC expedition, hundreds of scientists representing institutions from [...] global understanding of climate feedback mechanisms in the central Arctic.

Pliocene, and the Miocene, possible long-term future) when the Arctic lost its white landscape and had a blue, ice-free ocean. Alexander Haumann , ERC Starting Grant VERTEXSO , January 2023 - Dcember [...] role of internal gravity waves in the warming Arctic Ocean. We want to identify if and how internal wave energy, wave-driven mixing, and sea ice melt are connected and will develop a [...] the ocean salinity and circulation and if these changes will amplify or dampen global warming in the future. Ocean tracers serve as a fingerprint