Central Arctic long-term observations [Translate to English:] Anomalies of annual mean liquid freshwater content in the upper Arctic Ocean basin [...] practical salinity of 35. The linear trend is 600+-300 The central Arctic is an important component of the global climate system, not only by atmospheric teleconnections but also by links in ocean circulation [...] overturning may be affected by the release of freshwater from the Arctic reservoir. Long-term observations in the Arctic Ocean by a multitude of observational platforms allow estimates of annual mean liquid

heterogeneity and temporal evolution of surface properties of the Arctic Ocean influence the radiative energy transfer through the coupled compartments (atmosphere, sea ice, open ocean) of the Arctic [...] heat release in most parts of the Arctic. Recent observations indicate, however, that in some regions major changes are taking place in the upper layers of the Arctic Ocean [...] ocean-sea ice model (North Atlantic Arctic Ocean Sea Ice Model, NAOSIM) show a destabilisation of the halocline due to increased freezing

, sediments, carbon, nutrients, and contaminants from land to ocean. These changes directly affect the Arctic ocean’s freshwater balance and circulation, sea-ice, marine food webs, greenhouse-gas [...] food security of Inuvialuit communities. RV Polarstern in the Arctic Ocean (Photo: Esther Horvath) From the boreal forest and tundra to the deep ocean, Arctic Pulse 2027 follows the journey of water, [...] carbon and emerging contaminants 2) Ecosystem Dynamics, Arctic Cod and fishes of the Central Arctic Ocean H2: Substantial shifts in productivity, ecosystem dynamics result from changes in runoff

Nature Scientific Reports
The ice-covered Arctic Ocean is a more important factor concerning the concentration of the greenhouse gas methane in the atmosphere than previously assumed [...] discovered interactions between the atmosphere, sea ice and the ocean in a recent online study in the journal Nature’s Scientific Reports.

Arctic Ocean
The sea ice extent in the Arctic Ocean reached its annual minimum of 4.81 million square kilometres on 12 September 2021. As such, the 2021 Arctic sea-ice minimum comes in at 12th place on the negative list for absolute values. Sea ice extent in September is one of the strongest

catching the afternoon high tide at ca 3:00 pm and bound for the Arctic Ocean. The four-week expedition, slated to end on 19 July in Tromsø, Norway, will focus on extended ecological fieldwork at the AWI’s deep-sea observatory Hausgarten and at the FRAM Ocean Observing System between Greenland and Svalbard. 50 researchers and a ship’s crew of 24 will be on board.

Marine heatwaves are becoming more frequent and intense. The Arctic Ocean also suffers from this development: The absence of sea ice will lead to more extreme fluctuations in ocean temperatures, with [...] heatwaves will also become much more intense and frequent in the Arctic in the 21st century. With drastic consequences for the ecosystem. The researchers published their findings in the scientific journal

We know little about the fish stocks in the central Arctic Ocean, and what we know about the local ecosystem is insufficient to ensure sustainable management. In response, in June 2021 the Agreement to Prevent Unregulated High Seas Fisheries in the Central Arctic Ocean – which includes a moratorium on fishing in the region – entered into force. The European Union and nine other countries signed

2018) Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color. Optics Express Other references: 1. [...] Dijken, “Continued increases in Arctic Ocean primary production,” Prog. Oceanogr. 136 , 60-70 (2015). 4. A.J. Kettle and M.O. Andreae, “Flux of dimethylsulfide from the oceans: a comparison of updated data sets and flux models,” J. Geophys. Res. 105 , 26793-26808 (2000). 5. M. Levasseur, “Impact of Arctic

accuracy and frequency over a full annual cycle in the Central Arctic Ocean. They have now published three overview articles on the MOSAiC atmosphere, snow and sea ice, and ocean programs in the journal [...] first complete picture of the climate processes in the central Arctic which is warming more than two times as fast as the rest of the planet - processes which affect weather and climate worldwide.