sea ice

Montreal Protocol has slowed loss of Arctic sea ice, say scientists

According to new research, the Montreal Protocol, which attempts to reduce emissions of ozone-depleting gases, has the unexpected benefit of delaying the disappearance of Arctic sea ice. In an effort to stem the loss of the ozone layer above the earth, nearly 200 nations pledged to reduce their emissions of “ozone-depleting substances” when they signed

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Antarctic sea ice hits new record low in 2023

Lower sea ice extent means that ocean waves will pound the coast of the giant ice sheet, further reducing ice shelves around Antarctica. Antarctic sea ice has likely shrunk to a record low, US scientists announced on Monday, raising concerns that the climate crisis is increasingly destabilising the frozen continent. The 2023 minimum is the lowest in 45 years

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Antarctic sea ice hit record lows again. Scientists wonder if it’s ‘the beginning of the end’

Antarctic sea ice has reached record low levels for the second time in two years, with some scientists alarmed that dramatic drops are a signal the climate crisis may now be more clearly influencing this vast, complex and isolated region. The sea ice that fringes Antarctica dropped to just 737,000 square miles (1.91 million square kilometers) on February 13, according to

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Global warming above 1.5C could trigger ‘multiple’ tipping points

There is a “significant likelihood” that multiple “tipping points” will be crossed if global temperatures exceed 1.5C above pre-industrial levels, new research suggests. Tipping points are thresholds that, if crossed, trigger large-scale and potentially irreversible changes in a particular part of the Earth system. The research, published in Science, reviews hundreds of academic studies to

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World on brink of five ‘disastrous’ climate tipping points, study finds

Giant ice sheets, ocean currents and permafrost regions may already have passed point of irreversible change The climate crisis has driven the world to the brink of multiple “disastrous” tipping points, according to a major study. It shows five dangerous tipping points may already have been passed due to the 1.1C of global heating caused

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Wildfire Pollution May Play a Surprising Role in the Fate of Arctic Sea Ice

Smoke brightens Arctic clouds, perhaps slowing ice loss, but the ice is still dwindling, which can further intensify wildfires in an unexpected feedback loop. Scientists say changes in the amounts of wildfire smoke mixing with clouds over the Arctic Ocean may play a key role in determining how fast the Arctic sea ice cover will

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