Content type

  • Team - AWI OZA

    vocalisations, speeding up the analysis of passive acoustic data in order to address ecological questions. I am interested in understanding the effects of the physical environment and the ecosystem productivity [...] acoustic monitoring of ambient noise in the Atlantic sector of the Southern Ocean Svenja Zakrzewski (2010), Bachelor Hochschule Bremerhaven The PALAOA-S experiment: vocal behaviour of Antarctic pinnipeds [...] vocalisations, with the aim of enabling reliable ecological inference from acoustic data. During my PhD, I assessed the potential and limitations of PAM for studying baleen whales in the Southern Ocean, with a

  • Candidate species

    exchange, the rise and the lowering of the cage needs sufficient stops to prevent barotrauma of the fish. The sea bass can tolerate temperatures in the North Sea, but the average temperature of 10 ° C in [...] flow velocities of 5-10 cm s -1 for optimal nutrient and CO 2 exchange on the surface of the thalli, as well as for the reduction of growth of epiphyts. In strong currents, the thalli of macroalgae become [...] escape through the mesh or other materials. Cod is one of the species with the highest rate of the escapees, which can have a negative impact on the wild population by cross-breeding. The extreme temperature

  • Polar Terrestrial Environmental Systems

    in the rest of the world in a climate model simulation (Photo: Alfred-Wegener-Institut) Correlation of centennial temperature variations in Brussels with temperature variations in the rest of the world [...] This project will advance the state of the art in coupled climate – ice-sheet modeling, and lead to deeper understanding of the long-term impacts of climate change on the Earth system. Contact: Alexander [...] and health in the high latitudes, as well as proxy development and proxy data synthesis, along with the analysis of global interactions, are central research interests of the group. The goal is to achieve

  • Climate modelling

    include a digital twin of every atom in the ocean and atmosphere in the model – and the processing power of all the world’s supercomputers combined wouldn’t remotely be up to the task. Accordingly, models [...] refers to the long-term state of the atmosphere and ocean over decades, centuries or millennia. To gauge the climate, the statistics of the meteorological parameters also used to determine the weather are [...] Celsius, according to the IPCC the risk of exceeding certain tipping points in the climate system will be lower. This assessment was also the basis for the 1.5-degree target included in the Paris Agreement,

  • WG Community & Evolutionary Ecology

    thermal environment of the mother has a strong influence on the fitness of the offspring in a matching environment. Mechanistically the plastic adaptation is linked to higher efficiency of the mitochondrial [...] between environment of the parents and of the offspring exists, it can be a selective advantage to transfer information about phenotypically plastic traits to the offspring. We investigate the epigenetic mechanisms [...] mechanisms of transgenerational plasticity (TGP) in the context of ocean warming and performance in a marine population of the threespine stickleback (Gasterosteus aculeatus), and could show that the thermal

  • Data Assimilation Publications

    NOAA SST data into the BSH operational circulation model for the North and Baltic Seas: Part 2. Sensitivity of the forecast's skill to the prior model error statistics. Journal of Marine Systems , 120 [...] assimilation of physical and biogeochemical observations. in Proceedings of the 10th EuroGOOS International Conference. "European Operational Oceanography for the ocean we want - Addressing the UN Ocean Decade [...] Janssen, F. (2012). Assimilating NOAA SST data into the BSH operational circulation model for the North and Baltic Seas: Inference about the data. Journal of Marine Systems , 105-108, pp. 152-162, doi:10.1016/j

  • Continental drift

    that the theory is correct. Wegener got profoundly involved in the matter. We have proof of his meticulousness in that we possess his personal copy of the first edition of his book “The Formation of Continents [...] elements in the Earth’s crust. He called one of them sial and the other sima. Wegener assumed that the oceans were composed of a heavier material than the continents. He thus presumed that the lighter continents [...] continents float on the heavier subsurface, like ice floes on the water. That was the core of his idea! It was associated with the concept of so-called isostasy. This says land bridges or the like couldn’t come

  • Seal research in Antarctica

    of the world’s stocks of seals. These large, abundant predators serve as powerful indicators of ecosystems and climate-driven change. The region of the Filchner Outflow System in the southern Weddell Sea [...] research at the Filchner Outflow System (Antarctica) Weddell seal with satellite transmitter (Photo: Alfred-Wegener-Institut) The Southern Ocean (SO) represents ~10% of the world’s oceans but hosts about 50% of [...] to comprehensively investigate the Filchner Outflow System (FOS). Here the outflow of ice shelf water of the Filchner Ronne Ice Shelf interacts with warm deep water of the Weddell Gyre circulation. This

  • SO-ASE

    societies around the world. Changes in the Southern Ocean may also impact the climate of other regions via atmospheric teleconnections. Antarctic climate variability arises as result of the tightly-coupled [...] ice covers much of the Southern Ocean. Antarctic sea ice plays an important role in strong feedback loops with the ocean and atmosphere. From the beginning of the satellite era in the late 1970s, Antarctic [...] for a large majority of global ocean heat and carbon uptake. Encircling the Antarctic continent, the Southern Ocean drives melt of the Antarctic ice sheet, which contains 60 m of potential global sea level

  • Climate Sciences

    such as the icebreaker Polarstern , observatories, aircrafts, and satellites to capture the evolving dynamics of the ocean, atmosphere, sea ice, and ice sheets. At the same time, we push the boundaries [...] critical insights into the past, present, and future of our planet. In cooperation with our colleagues in the Bio- and Geosciences, our research extends to investigating the impact of climate change on marine [...] these processes – especially in the rapidly changing polar regions where the changes have far-reaching implications, such as global sea level rise – is at the heart of our research. We strive to understand