thickness redistribution modeling h2 h1 Thermodynamic growth Dynamic growth 3 Haas, Sea Ice Book, 2017 Results: Sea ice thickness distribution Thickness distribution of the Polynya after one month 0.9 [...] 20190617_chaas_albedyll_16_9 Thickness and Deformation in the 2018 North Greenland Polynya Haas C., L. v. Albedyll, S. Hendricks, T. Krumpen, F. Kauker, J. Rohde Feb 13 – Mar 31, 2018 70°0'0"E95°0'0"E [...] 9 m grown thermodynamically (mode) dynamic processes doubled the ice thickness to 1.94 m 4 Haas, Sea Ice Book, 2017 Thermodynamic growth Modelled thickness 0.95 m Level and deformed ice 5 10 15 20 km z

Although today the Arctic is a hotspot of climate change, data sampling is still sparse due to the large sea ice cover. Yet both the historical and the modern observational data are important for long-term climate [...] database contains almost 290.000 quality checked oceanographic profiles for the Arctic Mediterranean north of 65°N in the time period 1980-2015. It thus represents a unique tool to study long-term changes

coasts of our seas have always been a natural and constant companion for the inhabitants. However, due to the climate crisis, they can increase dramatically and get out of hand. With rising sea levels and [...] an increase in extreme storms, severe erosion is taking place on many coasts - not only in the North Sea, but also in the Mediterranean. The island of Djerba, a popular vacation destination in Tunisia [...] activities. The Project objectives At the AWI with the Biological Institute Helgoland and the Wadden Sea Station Sylt as well as the University of Sfax in Tunisia, researchers are working on slowing down

Impact of sea ice decline and changing silicic acid availability on Central Arctic primary productivity Antonia Thielecke1, Jeffrey Krause2, Natasha Bryan1, Lena Eggers1, Mar Fernández-Méndez1 1Alfred [...] 1Alfred Wegener Institute, Germany; 2Dauphin Island Sea Lab, USA Antonia.thielecke@awi.de References 1 Hátún, H., Azetsu-Scott, K., Somavilla, R., Rey, F., Johnson, C., Mathis, M., Mikolajewicz, U., Coupel, P [...] S.V., Salter, I., Ólafsson, J., 2017. The subpolar gyre regulates silicate concentrations in the North Atlantic. Sci Rep 7, 14576. doi.org/10.1038/s41598-017-14837-4 2 Orkney, A., Platt, T., N

meiobenthos organisms in an arctic deep-sea environment , 12th Deep-Sea Biology Symposium, Reykjavik, Island.-11.06.2010. . 118. Soltwedel, T. (2010): Deep-sea long-term observatory HAUSGARTEN , [Misc [...] PATTERNS OF DEEP-SEA MEIOFAUNA: AN EXPERIMENTAL APPROACH , ASLO, Granada, 22 February 2015 - 27 February 2015 . 5. Jacob, M. , Soltwedel, T. , Ramette, A. and Boetius, A. (2015): Deep-sea bacterial and [...] Management of marine Litter in European Seas, Berlin, 10 April 2013 - 12 April 2013 . 37. Lehmenhecker, S. and Wulff, T. (2013): Flying Drone for AUV Under-Ice Missions , Sea Technology, COMPASS PUBLICATIONS

for Coastal and Arctic Seas: The aim of the project is the establishment of a long-term observation network of automated sensors on buoys, gliders etc. Focus area is the North Sea, but a prototype of the [...] :SAHFOS runs the Continuous Plankton Recorder surveys, that initially concentrated on the North Sea and North Atlantic (in operation since the 1930s) but CPRs are now deployed in many regions of the world [...] n here. HOTS : Hawai Ocean Time series: Time series operated at the open ocean site ALOHA in the North Pacific Subtropical Gyre. hahana.soest.hawaii.edu/hot/hot_jgofs.html I IACS : International

industry the north–south 14C difference is changed by up to +2. If we apply a cubic relationship between wind speed and piston velocity or if we adjust sea surface 14C as described above, the north–south 14C [...] component of the north–south gradi- ent. Also a re-assessment of 14C sources from civil and military nuclear facilities (mainly in the north) would help to reduce the uncertainty in the simulated north–south gradient [...] Fossil fuel emissions also drive the changing north–south gradient, showing lower 14C in the northern hemisphere only since 2002. The fossil fuel-induced north–south (and also troposphere–stratosphere) 14CO2

causes and consequences of sea ice melt in three contrasting sea-ice regimes as functions of atmospheric and oceanographic conditions: 1) seasonal sea ice, mostly originating from Russian shelf regions and [...] observed sea ice, ocean, and ecosystem changes in the Central Arctic Ocean during melt season. We will investigate the causes and consequences of differences in sea ice melt in three contrasting sea-ice e [...] ice zone 2) first- and second year sea ice from the central Arctic Ocean, drifting along the transpolar drift system, and 3) multi-year ice in the “last ice area” north of Greenland. The overall objective

rotating gyres of the Ross and Weddell Seas. Heat losses to the atmosphere, interactions with the adjacent ice shelves, and salt enrichment by brine ejected from freezing sea ice result in very dense water masses [...] mean wind field. The deep water masses upwelling in the Antarctic Divergence, sucked in from their North Atlantic source regions, are partly driven northward near the surface towards the northern flank of [...] masses which run down the continental slope towards the deep sea floor. The newly formed and well ventilated bottom water underrides, steered by bottom topography, the ACC to fill the deep basins of the

also been polluting our oceans since the industrialization of the world. Coastal seas such as the North and Baltic Seas in particular have been and continue to be exposed to countless chemical inputs. [...] a particular focus is on the effects of toxic munition compounds on the marine environment of our seas. Team Dr. Matthias Brenner M.Sc. Romina Schuster Projects CONAMR-C MUNIMAP REMARCO CONMAR RecorD We