diversity of the entire plankton community of the Fram Strait (Arctic) is assessed. This data is then applied to forecast future scenarios of Arctic planktonic biodiversity. Recommendations to policy and indicator [...] labs located along the German Baltic Sea. The overall objective is to develop a smart and flexible ocean observation strategy tailored to the specific observation needs of individual stakeholder groups.

Chart of the Oceans (GEBCO) , the International Bathymetric Chart of the Arctic Ocean (IBCAO) ,the International Bathymetric Chart of the Southern Ocean (IBCSO) , and the Southwest Indian Ocean Bathymetric [...] world’s oceans by 2030, and hosts the Seabed 2030 Southern Ocean Regional Center (SORC) . SORC’s and IBCSO’ s responsibility is to produce the best possible authoritative map of the Southern Ocean, the South [...] Global and regional bathymetric models IBSCO (International Bathymetric Chart of the Southern Ocean) (Graphic: Alfred-Wegener-Institut / IBSCO v2, Dorschel et al., 2022) IBSCO v2 Datenabdeckung (Graphic:

reflect in detail processes in the ocean, which have a major influence on the climate. In response, the AWI has developed a special ocean model (FESOM), which simulates e.g. ocean currents and sea ice. For their [...] All around the world, there are natural climate archives – the sediments on the ocean floor, ancient ice in the Arctic and Antarctic, wood for tree-ring analyses, and more. These archives contain what [...] computer programmes used to simulate reality: the motion of air masses, radiation from the sun, and ocean currents – they’re all climate-relevant processes that, with the aid of mathematical formulas, can

Purser • AWI Science Award, 2023, Dr. Cara Nissen Diverse Grants und Projekte • ERC Starting Grant OceanPeak (Hauck), www.awi.de/ueber-uns/service/presse/presse- detailansicht/default-c1f8a44c21-1 [...] ): Year-round Ecosystem Study on Svalbard: Seasonally resolving ecosystem functioning in a warming Arctic www.fona.de/de/yesss-neues- forschungsprojekt-untersucht-ganzjaehrig-erwaermung-in-der-arktis

O values in ice and water samples from the Arctic and Antarctic, as well as the δ 13 C values of dissolved inorganic carbon in the water of the polar oceans. In addition, our laboratories offer the possibility [...] input) and changes in the supply of nutrient silicon and its use in polar and subpolar ocean regions (e.g. Southern Ocean, North Pacific) can be reconstructed on geological time scales. For the measurements [...] Clumped isotopes δ 13 C + δ 18 O (biog. carbonate, foraminifers) Option: clumped isotopes Changes in ocean circulation, nutrient content and deep water ventilation (δ 13 C) Hydrographic changes (δ 18 O, Δ47)

degradation and impacts of contaminants of emerging concern (CECs) in the oceans through case studies in the Atlantic, the Arctic and the Mediterranean. It is developing new methods for assessing the impact [...] on, aggregation, ecological function and distribution of organic compounds in the changing polar ocean. We aim to understand the function of marine organic compounds, both, as diagnostic markers to decode [...] for DOM characterization, which allows direct injection of original (i.e., non-extracted), filtered ocean water samples at native salt and DOC concentrations. To achieve this, we used reversed-phase liquid

The winter growth period for sea ice in the Arctic Ocean is now over, with levels at a record low. The winter ice extent on 21 March 2025 was lower than at any time since continuous satellite recording [...] cover is over a million square kilometres below the long-term average. As in February 2025, average Arctic sea ice cover remained at an all-time low for the entire month of March, equalling the previous low

Siberian river systems into the central Arctic and the North Atlantic. This material affects Arctic biogeochemistry and ecosystems, while the fresh water itself alters ocean circulation. The Alfred Wegener Institute [...] suspended matter from the Siberian shelves across the central Arctic towards the Fram Strait channel, which connects to the Nordic Seas. This cross-Arctic flow influences the delivery of both natural substances [...] known as the Transpolar Draft, operates. It also uncovers the various factors controlling this major Arctic surface current, including warmer temperatures which could increase the spread of human-made pollutants

look beyond the moorings and the Hausgarten into the Norwegian Sea and the Arctic Ocean. The Fram Strait connects the Arctic Ocean and the North Atlantic. Unlike the shallow water conjunction to the Pacific [...] Arctic long-term observatory FRAM 5,000 metres seawater plus ice separate the seafloor from boisterous life in the upper water layers of the Arctic Ocean. Additionally there is a strong change between [...] deep and thus the main region for exchange of water between the Arctic and the global oceans. Due to its importance for the global ocean circulation the Fram Strait has long since been a focus area of

has therefore been developed … 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