Stability of the West Antarctic
ice sheet in a warming world
Ian Joughin and Richard B. Alley
"Ice sheets are expected to shrink in size as the world warms, which in turn will raise sea level. The West Antarctic ice sheet is of particular concern, because it was probably much smaller at times during the past million years when temperatures were com- parable to levels that might be reached or exceeded within the next few centuries. Much of the grounded ice in West Antarctica lies on a bed that deepens inland and extends well below sea level. Oceanic and atmospheric warming threaten to reduce or eliminate the floating ice shelves that buttress the ice sheet at present. Loss of the ice shelves would accelerate the flow of non- floating ice near the coast. Because of the slope of the sea bed, the consequent thinning could ultimately float much of the ice sheet's interior. In this scenario, global sea level would rise by more than three metres, at an unknown rate. Simplified analyses suggest that much of the ice sheet will survive beyond this century. We do not know how likely or inevitable eventual collapse of the West Antarctic ice sheet is at this stage, but the possibility cannot be discarded. For confident projections of the fate of the ice sheet and the rate of any collapse, further work including the development of well-validated physical models will be required."
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Opening May 22, 2014
Isaac Delgado Fine Arts Gallery
Delgado Community College, City Park Campus
Building 1, Third Floor
615 City Park Avenue
New Orleans, LA 70119
Exhibit dates are May 22 - August 28, 2014
There will be a closing reception and artist talk on August 28, 5 - 7 p.m.
Summer gallery hours:
Monday - Thursday, 9 a.m. - 5 p.m.
The public is welcome and there is no admission charge. For further information contact Brenda Hanegan, gallery director, at 504-671-6377, or firstname.lastname@example.org.
Original exhibition curated by David Francis
Center on Contemporary Art, Seattle, WA