TRANSDRIFT -Project are: to assess the influence of sea-ice and ocean dynamics in the Laptev Sea on the transpolar drift; to investigate changes in the arctic halocline, water mass formation, and [...] of Ocean ACIDification) Project funded by the German Ministry of Education and Research (BMBF) Duration: 01.10.2015 - 31.12.2017 Coordinator [...] stressors, and what are the consequences for marine ecosystems and ocean biogeochemical cycles? Contact: A. Boetius, F. Wenzhöfer

Stable Isotope Facility Bremerhaven Nutrient Facility Observatories Ocean: FRAM Water: COSYNA Meteorology Geophysics Ships Polarstern Heincke Uthörn Mya II Aade Stations Neumayer Station III Arctic Station

factors to explore the ecological role of marine mammals in the Arctic Ocean. Data stem from the interdisciplinary Arctic FRAM ocean observatory, which provides a unique opportunity to gain insight into [...] . I strongly believe that a holistic understanding of the Arctic Ocean ecosystem is essential in view of future management and conservation strategies to preserve this unique and fragile ecosystem [...] the acoustic occurrence of baleen whales in the Arctic Ocean. This region is of special concern due to strong ongoing environmental alterations triggered by climate change, such as sea-ice

marine ecosystems must always keep the polar regions in mind. The Arctic and Antarctic, for example, play a central role in the system of global ocean currents, and the large but shrinking ice sheets are

The vertically facing towed camera system OFOS (Ocean Floor Observation System) is used to assess large-scale distribution patterns of larger epi-benthic organisms and other objects ( [...] invertebrates from the deep-sea observatory HAUSGARTEN (Fram Strait, Arctic Ocean). Marine Ecology Progress Series 602: 15-29. Taylor, J., Krumpen, T., Soltwedel, T., Gutt, J., Bergmann, M. (2017): Dynamic [...] interannual variability of megafaunal assemblages in the Arctic deep sea: preliminary results from the HAUSGARTEN observatory (79ºN). Deep-Sea Research I 58: 711-723.

Example of a sea ice model (Graphic: Alfred Wegener Institut) The Arctic areas - ocean even more than land - are difficult to reach, for several winter months not at all. Instruments must be able to work [...] compute the model forward in time". The area of interest- here the Arctic Ocean is overlaid with a three-dimensional grid. The geometry of this grid can be as simple or complicated as one likes. Numerical [...] Spelman, M. , Winton, M. and Zhang, R. (2005): Formulation of an ocean model for global climate simulations , Ocean Science, 1 , pp. 45-79 .

The Research Vessel Polarstern was in the Arctic for the past seven weeks. There, the summertime sea-ice extent declined by ca. 40 percent over the past 40 years – making it one of [...] Strait and in the marginal ice zone north of Svalbard, as well as ocean/glacier interactions off the coast of Greenland. Central research questions included how the ice conditions, ocean heat fluxes and ocean stratification determine sea-ice melt in the marginal ice zone (between the ice free waters and the dense pack ice) and how the melt

at the University of Bremen. Sea Ice MOSAiC The sea ice in the Arctic and Antarctic is a major component of the global climate system, and changes in its thickness and snow cover are important indicators [...] , jpg | 747 KB Media DW (Video) | 08.08.2020 On thin ice: The Arctic and earth's climate Find out more > DW | 05.05.2020 Polarstern sets records on Arctic climate mission Find out more > Above & Beyond, Canada's Arctic Journal | 31.12.2013 On Thin Ice Find out more > Dialogue & Lectures Policy advice Intergovernmental Panel on Climate Change IPCC

Intergovernmental Panel on Climate Change assesses the state of the oceans with Prof. Dr. Björn Rost Storing heat, absorbing CO₂, and providing habitats for countless species - yet our oceans and coastal [...] Year 2016/17 Resistant Arctic microalgae (Deutschlandfunk, 25.1.2017) Radio interview on the responses of Arctic phytoplankton to climate change on the occasion [...] single-celled algae species and an important source of food in the oceans. Dr Clara Hoppe of the Alfred Wegener Institute examines how changed living conditions as a result of climate change affect Arctic

Excellent Research Meltwater pools on the Arctic Ocean. The polar regions and oceans are central drivers of climate-related processes. (Photo: Alfred-Wegener-Institut) Oceans cover [...] they hold resources essential to humanity’s survival. Not only do oceans and their ecosystems fulfil a key role in the control of global environmental processes; they are also subject to anthropogenic use [...] are often concentrated, the vast and unpopulated regions in the Arctic and Antarctic are also transforming. Not only are the polar regions highly sensitive to climatic changes, they themselves are one