. (2018): Deep-sea benthic communities and oxygen fluxes in the Arctic Fram Strait controlled by sea-ice cover and water depth. Biogeosciences 15: 4849-4869. Braeckman, U., Janssen, F., Lavik, G., Elvert [...] , C., Wenzhöfer, F. (2018): Carbon and nitrogen turnover in the Arctic deep sea: in-situ benthic community response to diatom and coccolithophorid phytodetritus. Biogeosciences 15: 6537-6557. Pop Ristova [...] Schewe, I., Soltwedel, T. (2015): Benthic oxygen uptake in the Arctic Ocean margins - A case study at the deep-sea observatory HAUSGARTEN (Fram Strait). PLoS ONE 10(10): e01383. Boetius, A., Wenzhöfer

you to travel to the Canadian Arctic. Visual impressions and conversations with Arctic inhabitants and scientists allow you to experience life on permafrost and the [...] the climate system. The background is the IPCC Special Report on Oceans and Cryosphere (SROCC) , which was published in 2019. Hugues Lantuit: Collapsing Arctic coastlines | Horizons 2019 Presentation This [...] four pages. Julia Boike, Alfred Wegener Institute, Permafrost, Arctic Circle 2015 Presentation This presentation was held at the Arctic Circle Conference in October 2015. Julia Boike talks about the

Since the marginal ice zone of the Arctic Ocean is a highly dynamic environment, it is crucial to track the position of the ice edge in order to define AUV (Autonomous

water input, which affects density and salinity layers of the ocean. Besides its direct climatic impact, the snow layer also adds to the uncertainty of sea ice thickness estimates by satellite altimeters [...] ice (Photo: Alfred Wegener Institut) We deploy snow buoys in the Arctic and Antarctic. They are equipped with echo sounders to record changes at the snow surface. Buoy data can be accessed via the

and moisture exchange between the atmosphere and the ice covered ocean, leads and polynias play an important role. This is documented by many modelling studies, but only very few observations exist yet [...] in the northern polar ocean. To prove if they can be applied for antarctic conditions, low-level legs were flown during 5 flights over the sea ice in the Weddell [...] sea ice in the Weddell Sea to complement the findings from the Arctic and to investigate differences in more detail. Furthermore, two flights were flown in a close formation with the BAS Twin Otter to

Gradient in the Early Eocene in the Subsurface Rather than Surface Ocean Layering of surface snow and firn at Kohnen Station, Antarctica - noise or seasonal signal? Assessing performance and seasonal bias [...] TEXH86 and UK’37 Long-term winter warming trend in the Siberian Arctic during the mid- to late Holocene Back from Antarctica Ocean surface temperature variability: Large model–data differences at decadal

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

dramatically changes the energy exchange between atmosphere and ocean in the Arctic. Melt ponds play a key role in these changes, because they substantially enhance the absorption of solar radiation [...] to form. From 9 May to 8 June 2008, we operated in the Canadian Arctic, mainly over the southern Beaufort Sea with Inuvik as airbase for Polar 5 . Sea ice conditions changed considerably during the [...] Kaleschke, L., Birnbaum, G. 2012. Melt ponds on Arctic sea ice determined from MODIS satellite data using an artificial neural network. The Cryosphere 6: 431-446. doi:10.5194/tc-6-431-

types with detailed uncertainty assessment using multi-sensor ocean color and sea surface temperature satellite products. Journal Geoph. Res.-Oceans 126: e2020JC017127, doi: 10.1029/2020JC0171275. [...] TROPOMI’s high spectrally resolved satellite data to fill gaps in ocean color observations. Oceans from Space V, Venice, Italy, 24 Oct 2022, Oral. Alvarado L., Bracher A., Oelker J., Losa S., Soppa M., [...] A. , Voelker C., Alvarez E. (2022) Toward the Synergistic Use of Ocean Colour Products to Improve the Description of Phytoplankton Productivity within the Global Ocean. ESA Ocean Carbon from Space Workshop

and the Frontiers in Arctic Marine Science (FRAM) observatory, which are distributed across the Weddell Sea and Fram Strait, respectively. See the maps to the [...] all sites are equipped with recorders at all time. Maps of the Arctic and Antarctic with underwater sound recording sites occupied by the AWI Ocean Acoustics group since 2006. PALAOA (PerenniAL Acoustic [...] Spitsbergen and Greenland. Further moorings in the adjacent Arctic Ocean extend this array slightly to the North. MAP of FRAM moorings hosting PAM recorders an AZFPs. Please note, that not all