summer insolation forces meltwater discharge from the ice sheets into the polar seas which subsequently enhances formation of sea ice during the winter. In the second case, growth of continental ice enhances [...] Heinrich events and their signature in the North Atlantic. Dear Hartmut, we have largely benefited from your unexpected finding of ice rafted debris in the North Atlantic Ocean. It inspired many researchers [...] our section. Go to: Home Research focus Tools Projects Publications Teaching & Outreach Team Deep-sea sediment cores recovered from the Northeast Atlantic Ocean were examined in order to elucidate the

on their doorstep and exploring the question of how climate change is altering the Wadden Sea and the North Sea in the long term.

important ones were the Laurentide Ice Sheet on North America, the Svalbard-Barents Sea Ice Sheet on Svalbard and on the subaerially exposed Barents Sea as well as the East Siberia-Chukchi Ice Sheet. During [...] sheets reached far into the Arctic Ocean, and signs of glacial overprint can be found as far north as at the North Pole. Many studies have shown that the onset of the Northern Hemisphere glaciation started [...] interest due to their sensitive response to global warming. Melting ice sheets would cause a significant sea-level rise which, in turn, would severely threaten low-lying coastal areas. In order to better understand

The North East Greenland Ice Stream transports enormous amounts of ice from the heart of the island to the sea and thus also influences global sea levels. An international research team led by the Alfred

measured sea ice thickness and properties, recorded the currents and chemical properties of the ocean and investigated life in and under the ice, in the open water and at the bottom of the deep sea. Their [...] significant changes compared to previous expeditions. On 7 September 2023, Polarstern reached the North Pole, and on 20 September there was the world's first livestream of an ROV under-ice dive from the

field on Earth here – only around 300 kilometers from the North Pole. This discovery suggests that research into hydrothermal activity in the deep sea needs to be rethought. The results were published in the [...] There is a greater variety of hydrothermal systems in the deep sea than previously assumed. This is the result of a recent study lead by MARUM – Center for Marine Environmental Sciences and the Faculty

parts of North America – reaching an ice thickness of more than 3 km, before it finally melted at the end of the ice age. To date, there have been few detailed studies of the evolution of the North American [...] that in particular the snowfall in summer favoured the growth of the ice sheet and influenced the sea level.

glance The Greenland Ice Ice Sheets Sea Ice Influence on Europe's climate Climate change in the Arctic Climate change and the Southern Ocean Climate change and the North Sea Climate change and the ocean Permafrost [...] Governance The collaborative framework of AWI’s Antarctic research Marine Protected Area in the Weddell Sea Arctic Council Shipping in the Arctic Arctic and Antarctic – more differences than similarities? Arctic

comfortable at four degrees Celsius. It has mi- grated from the increasingly warmer North Sea and North Atlantic to the north in the past years and now Clear signs: The Kongsfjord on Spitsbergen displays a [...] most clearly in the constantly declining sea ice cover. Scientists presume that the North Pole could be ice-free in summer in less than 40 years. The melting sea ice opens up new opportunities for some [...] than the Atlantic sea butterfly. It, too, came to the Fram Strait with the warmer Atlantic water. In contrast to the sea butterfly, however, it has now managed to reproduce in the far north, too, as AWI biologists

farmed using an extensive fixed off-bottom longline technique in the Baltic Sea as well as in tanks in the North Sea. Sea Lettuce Sea Lettuce Ulva spp. are edible green seaweeds that are used in foods, feeds [...] 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 the North Sea is below its optimum temperature range for growth [...] from the upper subtidal of the rocky coasts of the Atlantic from Greenland to Portugal and the North Sea. It is traditionally eaten dried in France, Ireland, Iceland and Canada, and is a source of minerals