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Scientists are increasingly warning of the potential that a shutdown, or even significant slowdown, of the Atlantic conveyor belt could lead to abrupt climate change, a shift in Earth’s climate that can occur within as short a timeframe as a decade but persist for decades or centuries.

Source: Scientists puzzled by slowing of Atlantic conveyor belt, warn of abrupt climate change – Conservation news

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CaptureSea ice extent at both poles has been breaking more and more records over recent years, but for radically different reasons. While the Arctic has been steadily losing ice cover, melting as the region rapidly warms, in stark contrast the Antarctic ice cover has remained stable, even growing in some years. Why this is occurring has proven difficult to explain, but now researchers from NASA think they may have cracked it.

Source: Why Antarctic Sea Ice Is Growing, While Arctic Sea Ice Is Melting | IFLScience

17MATTER2-master675A ripple effect of weather, insects and other food supplies, from the Arctic to the tropics, may be driving down the population of the red knot, a study finds.

Source: Climate Change and the Case of the Shrinking Red Knots – The New York Times

Future in which global concentration of CO2 is permanently above 400 parts per million looms

Source: World’s carbon dioxide concentration teetering on the point of no return | Environment | The Guardian

115023_webThe Western Antarctic sector of the Southern Ocean is the regular feeding ground of a large number of fin and humpback whales of the Southern Hemisphere. Around 5,000 fin whales likely migrate to its ice-free waters during summer, along with at least 3,000 humpback whales. This is according to a study that was led by Helena Herr of the University of Veterinary Medicine Hannover in Germany, and is published in Springer’s journal Polar Biology.

Source: Antarctic whales and the krill they eat | EurekAlert! Science News