Antarctic ice collapse linked to greenhouse gases | Top News | Reuters.com: "OSLO (Reuters) - Scientists said on Monday that they had found the first direct evidence linking the collapse of an ice shelf in Antarctica to global warming widely blamed on human activities.
Shifts in winds whipping around the southern Ocean, tied to human emissions of greenhouse gases, had warmed the Antarctic peninsula jutting up toward South America and contributed to the break-up of the Larsen B ice shelf in 2002, they said.
'This is the first time that anyone has been able to demonstrate a physical process directly linking the break-up of the Larsen Ice Shelf to human activity,' said Gareth Marshall, lead author of the study at the British Antarctic Survey.
The chunk that collapsed into the Weddell Sea in 2002 was 3,250 sq kms (1,255 sq miles), bigger than Luxembourg or the U.S. state of Rhode Island.
Most climate experts say greenhouse gases, mainly from fossil fuels burned in power plants, factories and cars, are warming the globe and could bring more erosion, floods or rising seas. They are wary of linking individual events -- such as a heatwave or a storm -- to warming."