The repeated bouts of warm weather this season could push the Arctic to a record low winter peak for the third year in a row.
South Pole Observatory carbon dioxide observing station cleared 400 ppm on May 23 – first time in 4 million years.
Over the past two decades, the massive platforms of floating ice that dot Antarctica’s coast have been thinning at an increasing rate.
Melting sea ice could have major impacts on regional and global weather and climate patterns, as well as sea life and wildlife.
A ‘tipping point’ – a threshold beyond which a system shifts to a new state – is becoming a familiar concept in discussions of climate.
According to two new studies, a portion of the West Antarctic Ice Sheet appears to have entered a state of retreat and melt that is “unstoppable”.