• Publications

    Appreciation of 50 Years of the Study of Oceans and Lakes. Bangor 18-22 March 2002 Talk - Hamm, C. (2002): Geometry and Material Properties of the Silicified Cell Walls of Planktonic Algae: The Technical [...] Design of Radial Framework Structures: The Case of Asterolampra. In: Block, P., Boller, G., DeWolf, C., Pauli, J., & Kaufmann, W. Eds.: Proceedings of the IASS 2024 Symposium; Redefining the Art of Structural [...] Decouple Ocean Carbon and Silicon Cycles in the Iron-limited Antarctic Circumpolar Current . Proceedings of the National Academy of Sciences of the United States of America . 110 (51). 20633-20638 Paper -

  • SoNoAT_2019_CourseContent.pdf

    AABW and AAIW north, the increase in NADW as we move north in the SW Atlantic and its reduction in the Eastern Basin of the Atlantic, and the appearance of MOW in the later part of the transect. Figure 5: [...] for the polar components of the climate system. Since 2009 he is the head of the Climate-Initiative REKLIM (Regional Climate Change) of the Helmholtz Association (HGF), in which nine centres of the HGF [...] leaving the ship, this will take the form of a short report detailing the pre-planning and execution on station of the CTD cast, the results they found and an interpretation of their findings in the context

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  • PoF_IV_proposal_for_extern.pdf

    internationally. All of this will be supported by a more strategic and dynamic integration of the Program and partners at the level of the RF E&E, of the Helmholtz Association as well as in the national, European [...] ocean system from the seafloor to the atmosphere. Atmosphere and Climate: The main objective of this Program was to gain a better understanding of the role of the atmosphere in the climate system. For this [...] Observatory of the Study of Arctic Climate MOSES Modular Observation Solutions for Earth Systems, an observing system of the Helmholtz Asso- ciation and a CTA of the RF E&E MoU Memorandum of Understanding

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  • 6_7_cruise_report_PS95.pdf

    from the shallow region of the English Channel to the Bay of Biscay, the region around the Ampère Seamount, the Cape Verde Islands and further stations in the South Atlantic up to Cape Town. The participants [...] gradually. In the morning of 10 November Polarstern entered the harbour of Las Palmas. The cruise leg PS95.2 started in the afternoon of the same day with the departure from Las Palmas towards the Cape Verde [...] lectures of the work carried out in the previous six days on the evening before and a teaching/learning period on the morning of the transfer where the outgoing groups taught the incoming students. The themes

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  • Cruise_reportPS102.pdf

    deployment of Expendable Bathythermographs (XBTs) to measure the thermal structure of the upper 1.8 km of the water column. XBT probes were ‘fired’ during the second leg of the cruise when the vessel was [...] mixing at the surface decreases the oxygenation of the lower water masses. Additionally, it decreases the formation of central water, which is subducted from the thermocline. In the case of SACW, the formation [...] deoxygenation of the water mass. This can greatly impact the ventilation of the surrounding water body and the formation rate of the water mass itself. Consequences are the expansion and formation of oxygen minimum

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  • Permafrost

    effects on the landscape, as the large ice masses melt, causing parts of the surface to collapse. The considerable diversity to be found in permafrost makes it particularly difficult to keep track of the various [...] found at the Zugspitze. Given its smaller overall land mass, there is less permafrost in the Southern Hemisphere. Although the Antarctic offers the constant low temperatures needed, the amount of land where [...] where the majority of biological and biochemical activity takes place, it is also referred to as the “active layer”, which, as the thawing layer, is not considered to be part of the permafrost. The layer

  • FRAM0170420_brochure_online_dS.pdf

    network. The mission of the “Frontiers in Arctic Marine Monitoring” (FRAM) infrastructure is to support synchronous year-round integrated system observations of one of the fastest changing regions of the Earth [...] information about the dynamics of the pack ice. 06 Ice tethered Bio-Optical Buoy (IBOB): consists of 3 sensor modules, one in the ice, one directly below the ice and one 5 meters below the ice. Measures [...] attribute the impact of anthropogenic activity and natural phenomena on the marine ecosystem of the Arctic Ocean. Long-term data set of 3 phytoplankton functional types in the Arctic by synergistic use of hyper-

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  • 1-s2.0-S027277142500232X-main.pdf

    (POC dry wt %) of 0.1 % (Southern Bight) to 1.9 % (south east of the Helgoland mud area) or 2 % (TOC dry wt%) (southern part of the Helgoland mud area) respectively in sediments of the German North Sea [...] 1997; Müller et al., 2024). Outside of the German part of the North Sea a first estimate (Diesing et al., 2017) of POC storage in the top 10 cm of sub- tidal sediments of the north west European shelf is 0 [...] 79) kgC m− 2. The major carbon deposition center of the North Sea (outside of Germany) is the Norwegian Trough (Skagerrak), accounting for about 87 % of the total Corg accumulation in the total North Sea

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  • Westermann_2016.pdf

    Arga Island in the NW part of the delta. The third river terrace is the oldest geomorphological unit of the Lena Delta, shaped by the extremely cold climate of the last glacial period when the area was not [...] assumed. At the bottom of the snow layer, the remaining shortwave radiation flux is assigned as energy input to the uppermost soil grid cell. The albedo of the snow is calculated as a function of the difference [...] version of CryoGrid 3 so that the sum of the volumetric contents of ice and water re- mains constant (for simplicity, the densities of ice and wa- ter are assumed equal). The phase change of the soil wa-

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  • NuL2024-04-03.pdf

    refers to the organic carbon content stored in the sediment of marine and coastal ecosystems. Against the backdrop of the current climate and biodiversity crisis, the Blue Carbon potential of marine ecosystems [...] researched and discussed. A study by the German Federal Agency for Nature Conservation (BfN) summarises the current state of knowledge on the Blue Carbon potential of the German North and Baltic Seas. Seagrass [...] review of coastal ecosystem services in the Baltic Sea. Science of the Total Environment 755: e142565. DOI: 10.1016/j. scitotenv.2020.142565 HELCOM/Helsinki Commission (2021a): Report of the HELCOM workshop

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