Arctic ocean – आवारा मुसाफिर

The global “plastic flood” reaches the Arctic

April 5, 2022469 Views

A new AWI-led study shows: there is now a concerning degree of plastic pollution in the Arctic Ocean Even the High North can’t escape the global threat of plastic pollution. An international review study just released by the Alfred Wegener Institute shows, the flood of plastic has reached all spheres of the Arctic: large quantities of plastic - transported by rivers, the air and shipping- can now be found in the Arctic Ocean. High concentrations of microplastic can be found in the water, on the seafloor, remote beaches, in rivers, and even in ice and snow. The plastic is not only a burden for ecosystems; it could also worsen climate change. The study was just released in the journal Nature Reviews Earth & Environment. Sampling Arctic sea ice. Photo: Alfred-Wegener-Institut / M. ...

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Climate change is destroying Arctic coasts

AWARA MUSAFIR BUREAU

February 18, 2022732 Views

Future land loss calculated for the first time in a scientific research Erosion is destroying the coasts of the Arctic. The warming of the soil, leading to ruptures and slumping, can endanger important infrastructures and threaten the safety of local populations. In addition, these processes release carbon stored in soils into the ocean, which could alter the role of the Arctic Ocean as an important storehouse of carbon and greenhouse gases. They could also contribute to increase climate change. Scientist investigating coastal erosion caused by thawing permafrost near Bykovsky peninsula, Laptev Sea, Siberia, Russia. Photo: AWI/Paul Overduin Until now, insights into the magnitude and speed of these changes have been lacking for the future. Using a new combination of computational ...

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Killer Whales lingering in newly melted Arctic Ocean

AWARA MUSAFIR BUREAU

December 4, 20211344 Views1

Killer whales are intelligent, adaptive predators, often teaming up to take down larger prey. Continuous reduction in sea ice in the Arctic Ocean is opening areas to increased killer whale dwelling and predation, potentially creating an ecological imbalance. During the 181st Meeting of the Acoustical Society of America, held from Nov. 29-Dec. 3, Brynn Kimber, from the University of Washington, discussed how killer whales have spent more time than previously recorded in the Arctic, following the decrease in sea ice. Killer whales will often travel to different areas to target varieties of prey. In a study including eight years of passive acoustic data, Kimber and their team monitored killer whale movements using acoustic tools, finding killer whales are spending more time than pr...

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Arctic Ocean started getting warmer decades earlier than we thought

AWARA MUSAFIR BUREAU

November 28, 2021351 Views

The Arctic Ocean has been getting warmer since the beginning of the 20th century – decades earlier than records suggest – due to warmer water flowing into the delicate polar ecosystem from the Atlantic Ocean. An international group of researchers reconstructed the recent history of ocean warming at the gateway to the Arctic Ocean in a region called the Fram Strait, between Greenland and Svalbard. FILE PHOTO: Icebergs are seen at the mouth of the Jakobshavn ice fjord near Ilulissat, Greenland, September 16, 2021. REUTERS/Hannibal Hanschke Using the chemical signatures found in marine microorganisms, the researchers found that the Arctic Ocean began warming rapidly at the beginning of the last century as warmer and saltier waters flowed in from the Atlantic – a phenomenon called At...