Atmospheric rivers help create sea ice holes

Long “atmospheric rivers” help create massive holes in Antarctic sea ice and may influence ocean conditions around the vast continent, according to new research. Scientists studied the impact of the intense plumes of warm and moist air that flow to the polar environment from the coast of South America and found that their repeated arrival … Continue reading Atmospheric rivers help create sea ice holes

Arctic ‘transitioning’ to a new climate

The Arctic has started to transition from predominantly frozen to an entirely different climate, according to a new report. Writing in the journal Nature Climate Change, scientists from the US National Centre for Atmospheric Research (NCAR) say the planet’s north has warmed so significantly that its year-to-year variability is moving outside the bounds of any … Continue reading Arctic ‘transitioning’ to a new climate

Penguins find an upside to less sea ice

Global warming is undeniably bad for the world’s wildlife, but it may bring a surprising short-term advantage for Adélie penguins (Pygoscelis adeliae) in continental East Antarctica. Scientists have discovered they were able to cover more ground in less time by swimming rather than walking as they searched for prey during an unusually ice-free breeding season … Continue reading Penguins find an upside to less sea ice

Ancient ice tells story of carbon storage

Scientists better understand the history of carbon dioxide storage in the Southern Ocean after analysing sea ice from the past 20,000 years. Writing in the journal Nature Geoscience, they say extreme seasonal variation during a period known as the Antarctic Cold Reversal caused a proliferation of diverse marine plankton populations. The plankton sequester large amounts … Continue reading Ancient ice tells story of carbon storage