Greenhouse gases could affect ocean circulation



The buildup of greenhouse gases could precipitate an abrupt collapse of the oceans' prevailing circulation system and send temperatures in Europe plummeting about 10° Celsius or more in a span of 10 years, says Wallace Broecker, professor of Earth and environmental sciences at Columbia University's Lamont-Doherty Earth Observatory, and author of new research that appears in the November 28 issue of Science magazine.