Bremerhaven: Researchers reveal new truth about the Arctic!

Bremerhaven: Researchers reveal new truth about the Arctic!

Bremerhaven, Deutschland - The discussion about the changes in the Arctic gets a fresh wind with a new study from Bremerhaven. Researchers at the Alfred Wegener Institute (AWI) have refuted a long-cherished assumption: there was no continuous and massive mischief in the Arctic during the coldest ice ages, as many took for granted. This discovery could have far -reaching consequences for our understanding of the past and future climate.

For years it has been disputed as to whether a thick layer ice has formed in the Arctic, which was considered to be fixed for many. The AWI team examined sediment kernels from the Northern Pole Army and the Yermak plateau and found that the Arctic was not completely covered with ice even in extreme cold periods of the past 750,000 years. Instead, the data show that there were seasonal changes in sea ice and there were always open water, which was of crucial importance for the marine living environment.

scientific methodology

The researchers used high -resolution earth system models to simulate the climate conditions during two cold periods that took place around 21,000 and 140,000 years ago. These models confirmed the results of the sediment analyzes by showing that warm Atlantic water flocked to the Arctic even under extreme conditions. This warm water prevented parts of the ocean over completely. So the ice was by no means static; It moved dynamically with the seasons and formed cracks as well as vacancies that let light in the water and thus made it possible.

Jochen Knies, the main author of the study, explained that although short -term malfunction could have been created, but there was never a huge, all -covering mischief for thousands of years. About 650,000 years ago, biological activities in the sediments decreased, which can be evaluated as an indication of a temporary event.

Future view and current challenges

The new findings are not only of interest to historians. They also help improve future climate models. The Arctic now heats up twice as quickly as the global average; A fact that makes understanding of earlier reactions to cold and heat phases urgently necessary in order to be able to predict how the region will develop in the future.

A current forecast of Colorado University suggests that the Arctic could be practically ice -free in the coming years. Satellite observations show that a significant decline in the Arctic sea ice has been recorded since 1978. Accordingly, the first ice -free day could occur over ten years earlier than previously thought. These developments are due to the human influence and atmospheric and oceanic heat transport. In summary, it can be said that research about the Arctic is in transition. The new findings from Bremerhaven are not only a blow to old myths, but also offer important indications for everything that is imminent us in the coming years and decades in terms of climate change. The dynamics and change of sea ice as well as the shifts of the marine ecosystems represent serious challenges- not only for the flora and fauna, but also for the coastal dwellers that face new risks.

For more information and details on this groundbreaking study, you can do the article by t-online href = "https://www.awi.de/ueber-uns/presse/presse-detailansicht/default-d141db3879fdbd558BD2BA4E9C931EC.HTML"> AWI Read. In addition, you will find interesting forecasts about the future of the Arctic in the analysis of Research and teaching .