Over centuries the deep sea was considered as a vast, desert-like environment with low number of species. However, in recent years knowledge about biodiversity in the deep sea has started to increase and [...] life. Biodiversity in the deep sea depends among other parameters on water depth, which in turn is linked to food availability. In contrast to the past assumption that deep-sea organisms live in very stable [...] changes in a the transition zone between the northern North Atlantic and the central Arctic Ocean, and to determine the factors controlling deep-sea biodiversity, the Alfred Wegener Institute established

planned open-ocean infrastructure FRAM (FRontiers in Arctic marine Monitoring) is permanent presence at sea, from surface to depth, for the provision of near real-time data on Earth system dynamics, climate [...] and ecosystem change. The FRAM Ocean Observing System will be installed in the gateway between the North Atlantic and the Central Arctic, representing a highly climate-sensitive and rapidly changing region [...] towards a better understanding of the effects of change in ocean circulation, water mass properties and sea-ice retreat on Arctic marine ecosystems and their main functions and services. FRAM will implement

represent temporary perturbations, long-term trends, or a new equilibrium. The decrease of sea-ice extent and sea-ice thickness in the past decade is statistically significant. These alterations will directly [...] detection of expected changes in abiotic and biotic parameters in a transition zone between the northern North Atlantic and the central Arctic Ocean, the Alfred Wegener Institute established the LTER (Long-Term [...] Wlodarska-Kowalczuk, M., Klages, M. (2005): HAUSGARTEN: multidisciplinary investigations at a deep-sea, long-term observatory in the Arctic Ocean. Oceanography 18(3): 46-61, doi.org/10.5670/oceanog.2005

s of Survey Areas BS - Beaufort Sea BaS - Barents Sea CAO - Central Arctic Ocean CS - Chukchi Sea FS - Fram Strait GS - Greenland Sea LaS - Laptev Sea LiS - Lincoln Sea IceBird Impressions IceBird-Impressions [...] information of the sea ice surface topography. This information is used to estimate the roughness of the sea ice surface as well as freeboard, a crucial parameter for remote sensing of sea ice thickness. Snow [...] preparing for a survey flight over sea ice (image: S. Hendricks, AWI) Objectives The AWI IceBird program is a series of airborne surveys to collect measurements of sea ice thickness in the Arctic conducted

Molecular Sea Ice Ecology Polar oceans are seasonally covered by sea ice with an average size of the continent of North America. Despite harsh conditions therein, sea ice and its lower surface can carry [...] typically dominated by Diatoms. Sea ice can provide important primary production to polar oceans via these communities, although they are often very patchy. In times of declining sea ice coverage it is a major [...] major challenge to determine current sea ice biodiversity, functions provided by its biota, and the future of sea ice communities in a warming ocean. We address these questions through analyses of total

Reports (data overview) Sea Ice Portal expedition.awi.de Extern sailwx.info The sound of Polarstern (Kopie 11) News Comprehensive assessment of the changing Central Arctic Ocean Sparse sea ice, thousands of [...] results of the study now published in the How is the dramatic decline in sea ice affecting biodiversity? The depths of the Weddell Sea are home to diverse biotic communities consisting of sponges, cold water [...] miles / 80 days Max. speed 16 knots Operation area Everywhere including pack ice zone Crew 44 Days on sea per year on average approx. 305 Shipyard Nobiskrug, Rendsburg and Howaldtswerke - Deutsche Werft Kiel

Linkages between Arctic and mid-Latitude weather and climate: unraveling the impact of changing sea ice and sea surface temperatures, Polar-amplification-MIP (PAMIP) Virtual workshop, online, 30 March 2021 [...] Linkages between Arctic and Mid-Latitude Weather and Climate: Unraveling the Impact of Changing Sea Ice and Sea Surface Temperatures, EMS Annual Meeting 2021, online, 5-9 September 2021. Arosio, C., Rozanov [...] Agenda Wednesday Introduction and meeting logistics A case study of the mid-November 2019 cyclone north of Greenland during MOSAiC (Cheng) Quality assessment of Arctic satellite ozone data and the impact

zoologists of the 19th century, who became known for his ecological work on oyster beds in the North Frisian Wadden Sea and coined the term "biocenosis". His concept of ecological living communities was grou [...] research and was frequently visiting the island of Helgoland for his morphological-physiological work on sea algae. In 1860 he was appointed as a full member of the Berlin Academy of Sciences. Pringsheim was [...] founded, which established a small field station for oyster research and the exploration of the Wadden Sea on the Island of Sylt in 1924.

transition zone between the northern North Atlantic and the central Arctic Ocean, and to determine the factors controlling Arctic deep-sea biodiversity. • Permanent presence at sea, from surface to depth, for the [...] The Weddell Sea features a rich and diverse ecosystem, complex sea-ice dynamics and intense ocean circulation. The physical and biogeochemical processes that prevail in the central Weddell Sea and the water [...] transition zone between the northern North Atlantic and the central Arctic Ocean, and to determine the factors controlling Arctic deep-sea biodiversity. • Permanent presence at sea, from surface to depth, for the

Coastal waters North Sea In the past century, around 1.6 million tons of conventional and 250 000 tons of chemical warfare agents (CWA) were dumped in the coastal waters of the North and Baltic Seas. Most of [...] 300,000 tons of explosives dumped in the Baltic Sea Find out more > Dialogue & Lectures Policy advice Federal/Länder Committee on the North Sea and Baltic Sea (BLANO) Member of the Technical Working Group [...] share of 300,000 tons lies in the Baltic Sea, especially in the Bay of Kiel and Lübeck, while around 1.3 million tons of munitions are still suspected in the North Sea. Areas off Spiekeroog and Wangerrooge