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Successful Paris Agreement could halve ice loss by 2100 Two new papers assess the impact of melting land ice on sea level rise. Credit: Photodynamic / Getty Images Limiting global warming to 1.5°C could halve the amount of Antarctic land ice lost by the end of the century, but maintaining current emissions – projected to raise global temperatures by 3°C by 2100 – will accelerate ice sheet loss and sea level rise past a point-of-no-return by 2060, according to two papers published today in Nature. The Paris Agreement is an international accord among 197 nations to limit global warming ...

Global heating pace risks ‘unstoppable’ sea level rise as Antarctic ice sheet melts Oliver Milman © Provided by The Guardian Photograph: AFP/Getty Images A special message from Microsoft News: India is currently being devastated by a deadly second wave of Covid. You can support Oxfam's Covid relief efforts in India, including reaching out to the most affected and vulnerable communities, distributing and installing medical equipment and accessories, and supporting the most marginalised households. You can donate here. The current pace of global heating risks unleashing ...

Experts modelled the effects of melting ice on sea levels at the century's end The Paris goal could reduce losses from glaciers by 50% and Greenland by 70% Findings from Antarctica were unclear, however, due to current uncertainties Meeting the ambitious target would lower sea rise from 9.8 inches to 5.1 inches Another study warned current emissions could lead us to cross a tipping point After this, it might become impossible to halt sea level rise for centuries to come 

Since 1993, melting land ice has contributed to at least half of global sea level rise and scientists have previously warned that the vast ice sheets of Antarctica were disappearing faster than worst-case scenarios.

“If the world warms up at a rate dictated by current policies we will see the Antarctic system start to get away from us around 2060,” said Robert DeConto, an expert in polar climate change at the University of Massachusetts and lead author of the study. “Once you put enough heat into the climate system, you are going to lose those ice shelves, and once that is set in motion you can’t reverse it.” DeConto added: “The oceans would have to cool back down before the ice sheet could heal, which would take a very long time. On a societal timescale it would essentially...