Antarctica's annual ice loss six times greater than 40 years ago, Nasa research shows

(The Independent, 14 Jan 2019) Warming since 1979 'tip of the iceberg' as accelerating pace of melting predicted to add metres to global sea levels.

The Antarctic ice sheet is losing six times as much ice each year as it was in the 1980s and the pace is accelerating, one of the most comprehensive studies of climate change effects on the continent has shown.

More than half an inch has been added to global sea levels since 1979, but if current trends continue it will be responsible for metres more in future, the Nasa-funded study found.

The international effort used aerial photos, satellite data and climate models dating back to the 1970s across18 Antarctic regions to get the most complete picture to date on the impacts of the changing climate.

It found that between 1979 and 1990 Antarctica lost an average of 40 gigatonnes (40 billion tonnes) of its mass each year.

Between 2009 and 2017 it lost an average 252 gigatonnes a year. This has added 3.6mm per decade to sea levels, or around 14mm since 1979, the study shows.

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The Independent, 14 Jan 2019: Antarctica's annual ice loss six times greater than 40 years ago, Nasa research shows