Articles on Antarctica

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During the Pliocene, up to one third of Antarctica’s ice sheet melted, causing sea-level rise of 20 metres. from www.shutterstock.com

If warming exceeds 2°C, Antarctica’s melting ice sheets could raise seas 20 metres in coming centuries

New research shows that warming by more than 2°C could be a tipping point for Antarctica's ice sheets, resulting in widespread meltdown and changes to the world's shorelines for centuries to come.
Aerial imagery revealing the extent of storm damage in Dee Why on Sydney’s Northern Beaches in 2016 following wild weather. NEARMAP/AAP

A landmark report confirms Australia is girt by hotter, higher seas. But there’s still time to act

The IPCC report says extreme sea level events that used to hit once a century will occur once a year in many places by 2050. This situation is inevitable, even if emissions are dramatically curbed.
Antarctic winds have a huge effect on weather in other places. NASA Goddard Space Flight Center/Flickr

The air above Antarctica is suddenly getting warmer – here’s what it means for Australia

Each spring, winds circling the South Pole weaken. If they weaken enough, they can actually reverse – causing rapid warming.
Since the last ice age, the ice sheet retreated over a thousand kilometres in the Ross Sea region, more than any other region on the continent. Rich Jones

New research shows that Antarctica’s largest floating ice shelf is highly sensitive to warming of the ocean

New research shows that ocean and air temperatures both contributed to the melting of Antarctica's Ross Ice Shelf in the past, but melting from below by a warming ocean became more important over time.
One of two underwater gliders is deployed from a research ship into Antarctic waters. NOAA

Waiting for an undersea robot in Antarctica to call home

Sending autonomous vehicles to the Southern Ocean can be fraught with anxiety, especially if one of them doesn't make radio contact when it's supposed to.
Sea ice responds to changes in winds and ocean currents, sometimes with origins thousands of kilometres away. NASA/Nathan Kurtz

Why Antarctica’s sea ice cover is so low (and no, it’s not just about climate change)

Antarctic sea ice cover fell to an all-time low recently and hasn't yet recovered. Why? The initial answers could lie in an unlikely place – the tropics.
Brazil, home to the Amazon, is one of just five ‘mega-wilderness’ countries. CIFOR

Earth’s wilderness is vanishing, and just a handful of nations can save it

More than two-thirds of Earth's remaining wilderness is in the hands of just five countries, according to a new global map. A concerted conservation effort is needed to save our last wild places.
Aerial shot shot of the rectangular iceberg found off the Larsen 3 ice shelf. Jeremy Harbeck/AAP

How a near-perfect rectangular iceberg formed

Geometric icebergs can form around Antarctica, although such a perfect rectangle is unusual.

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