Content type

  • Current research

    subtropical ocean is expanding the tropics The observed anomaly of sea surface temperature during the last 5 years of the satellite age (2015-2019) in relation to the first 5 years of the satellite age (1982-1986) [...] [11 July 2018] The melting of glaciers on one side of the globe can trigger disintegration of glaciers on the other side of the globe, as has been presented in a recent paper by a team of AWI scientists [...] . Proceedings of the National Academy of Sciences of the United States of America (PNAS). doi: 10.1073/pnas.1714754115 . 2017 New findings on the past and future of sea ice cover in the Arctic Scientists

  • UN Decade of Ocean Science

    UN Decade of Ocean Science Spotlight on the Ocean It’s a world full of riddles: though the ocean shapes the face of our ‘blue planet’, covering 70 percent of its surface, we still know far too little about [...] safety. In the context of the Decade, all of this knowhow is to be made available worldwide. And last but not least, the goal is to raise awareness for the economic, social and cultural value of the ocean; [...] network that investigates open research questions and develops solutions for the preservation and sustainable use of the ocean. Its motto: “The science we need for the ocean we want”. After all, intact ocean

  • World's largest fish breeding area discovered in Antarctica

    filmed thousands of nests of icefish of the species Neopagetopsis ionah on the seabed. The density of the nests and the size of the entire breeding area suggest a total number of about 60 million icefish [...] breeding at the time of observation. These findings provide support for the establishment of a Marine Protected Area in the Atlantic sector of the Southern Ocean. A team led by Autun Purser from the Alfred [...] Fascinating discovery
    Near the Filchner Ice Shelf in the south of the Antarctic Weddell Sea, a research team has found the world's largest fish breeding area known to date. A towed camera system ph

  • Olaf Eisen

    play the conditions and the base of the ice for the speedy ice streams and did they change their behaviour in the past? Where can we find the oldest ice, with which we can reconstruct the climate of the [...] and ends with the composition of the subsurface below the ice, both of which govern flow behaviour of ice. In the end, we hope to make conclusions about how ice masses will change in the decades to come [...] million years ago? For all of these questions observations on site are essential. This begins with the determination of the ice thickness, continues with the inference of the crystal orientation fabric

  • Polar underwater sounds - AWI OZA (Kopie 2)

    Spectrogram of 20060419-0814_PALAOA (Photo: OZA AWI) A silent ocean Southern Ocean with sea ice (Photo: AWI) The Southern Ocean is one of the last pristine areas of the world’s oceans. Only few fishing and [...] Examples of underwater sounds in the polar oceans Map of the Atlantic sector of the Southern Ocean with all recording positions marked in red. (Photo: OZA AWI) The sound snippets below illustrate some [...] frequently in the vicinity of Elephant Island, off the northern tip of the Antarctic Peninsula, where the 20 Hz pulse also often contains a higher frequency component around 89 Hz. Spectrogram of 20130705-

  • Clancy

    concept for the use of the caught mitten crabs. One goal is to develop a long-term financing concept for the expansion and permanent operation of the traps. Another topic will be the development of the necessary [...] feed on other crustaceans as well. In addition to the growth rate of the animals, we also focus on the digestibility of the feed. The prototype of the trap has been in Belgium since 2019 (Photo: Alfre [...] Successful control of invasive mitten crabs with an innovative trap concept The mitten crab is on the IUCN's list of the world's 100 most dangerous invasive species. In Germany, the crab is found in large

  • Projects

    time-scales, the spatial extent of the variations is increasing (space-time structure) Correlation of interannual temperature variations in Brussels with temperature variations in the rest of the world in a climate [...] basis for the quantitative use of paleoclimate records. The instrumental record is only a snapshot of our climate record. Two recent advances allow a deeper use of the paleo-record: (1) the increased [...] itut) Lake & Sea ice algae Lake & Sea-ice algae The seasonal extent and properties of Arctic ice on land and in the ocean determine the efficacy of the albedo feedback mechanism causing arctic climate

  • Members

    studies in biology at the University of Bremen and then returned to the AWI and especially to the labs. Here, the supervision of our microalgal stock culture collection, the realization of lab experiments on [...] content are also part of the spectrum of my tasks in the group, besides the preparation of expeditions and ordering logistics. "What will happen tomorrow?" is an important question for me, not just regarding [...] faster than the global average. The influx of warm Atlantic water and the rapid melting of glaciers, releasing sediments and freshwater, make Svalbard a unique place to study the effects of climate change

  • Alfred Wegener Lecture

    role of the oceans. He is a member of the Royal Netherlands Academy of Arts and Sciences, a Fellow of the Society for Industrial and Applied Mathematics and in 2005, he received the Lewis Fry Richardson medal [...] 2015 Prof. Lynne D. Talley , Scripps Institution of Oceanography elaborated the " Role of the Southern Ocean in the Global Overturning Circulation ". About a hundred colleagues from Bremen and Bremerhaven [...] is professor of Dynamical Oceanography at the Institute for Marine and Atmospheric research Utrecht and director of the Centre for Complex Systems Studies within the Department of Physics of Utrecht University

  • Chronicle

    and study the local influences of the sea, the ice and the atmosphere on the Weddell Sea and global processes. August - October 2008 – RV Polarstern is the first research vessel in the world to circumnavigate [...] care is still fit for the trip to the ice. Birthday spends the research icebreaker in the vastness of Antarctica. The public can visit the ship in June, before it traveled the southern hemisphere for a year [...] During the Polarstern’s 29th Antarctic expedition, the researchers on board investigate the status of the Antarctic ecosystem after the polar winter, as well as the causes of differences in the development