The Greenland ice sheet is likely to be more vulnerable to global
warming than previously thought. The temperature threshold for melting
the ice sheet completely is in the range of 0.8 to 3.2 degrees Celsius
of global warming, with a best estimate of 1.6 degrees above
pre-industrial levels, shows a new study by scientists from the Potsdam
Institute for Climate Impact Research (PIK) and the Universidad
Complutense de Madrid. Today, already 0.8 degrees of global warming has
been observed. Substantial melting of land ice could contribute to
long-term sea-level rise of several meters and therefore it potentially
affects the lives of many millions of people.
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