Pine Island glacier loss must force another look at sea-level forecasts

Update 28 June 2011: Columbia University researchers have just reported that "Ocean Currents Speed Melting of Antarctic Ice". They find that "Stronger ocean currents beneath West Antarctica’s Pine Island Glacier Ice Shelf are eroding the ice from below, speeding the melting of the glacier as a whole, according to a new study in Nature Geoscience. A growing cavity beneath the ice shelf has allowed more warm water to melt the ice, the researchers say—a process that feeds back into the ongoing rise in global sea levels. The glacier is currently sliding into the sea at a clip of four kilometers (2.5 miles) a year, while its ice shelf is melting at about 80 cubic kilometers a year - 50 percent faster than it was in the early 1990s - the paper estimates."

For discussion of map/image, see here.

New research suggest that just two collapsing West Antarctic glaciers could add another half a metre to sea levels this century

The Victorian and Queensland governments decisions to stick to an "upper boundary" sea-level rise estimate of 0.8 metres by 2100 (and NSW at 0.9 metre) for planning purposes needs urgent revision, with new modelling showing two West Antarctic glaciers are past their tipping points.

How the Murdoch press got it wrong on the Himalayan big melt

Published in Crikey, 20 January 2010

by Damien Lawson and David Spratt

Drawing on a January 13 New Scientist story by Fred Pearce reporting on a debate among glaciologists about the IPCC's claim, The Times (UK) and subsequently The Australian and other Murdoch papers have tried to shift from a debate about timing to a questioning of global warming.