Word: oceanic
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...conversely, they could make the impact even worse than expected. And according to a study that sent tremors through the scientific community last week, that is exactly what seems to be happening in Greenland. Glaciers that flow toward the ocean in the southern half of that enormous frozen island are among the world's fastest moving, and their massive outpouring of ice now contributes fully a sixth of the annual rise in sea level. According to a study in the current issue of Science, they have nearly doubled their rate of flow over the past five years, to about...
...half-meter (about 1.5 ft.) by the end of the century--are too low and will have to be revised upward. Greenland's ice cap covers more than 650,000 sq. mi. and in places stands nearly 2 miles thick. "If it all melted or otherwise slid into the ocean, sea level would rise by 20 ft. or so," says Michael Oppenheimer, a professor of geosciences and international affairs at Princeton. Under conventional global-warming scenarios, that will eventually happen--but over a period of several thousand years. The new study suggests that it could happen in a few hundred...
...rate is global warming - not because all of the ice itself is melting so fast, but because record melting at its upper surface is letting water percolate down to the bedrock, where it acts as a lubricant. Another factor, says Dowdeswell: ice "tongues" that form where glaciers meet the ocean have broken up over recent years, removing a sort of roadblock that holds them in check...
...Greenland?s ice were plopped into the ocean, sea level would rise a catastrophic 20 feet or more. Until yesterday, most experts thought global warming might make it happen in a couple of thousand years. Now they?re talking hundreds. It still sounds like a long time, but, says Michael Oppenheimer, a professor of geosciences and international affairs at Princeton, "that comes to a couple of feet per century, and that?s more than society is equipped to handle." It doesn?t, moreover, take into account the two mammoth ice sheets of Antarctica, which pack about 20 and 200 feet...
...four sites in New Orleans and across Mississippi on projects ranging from gutting houses to working with school children. “What struck me the most was the hope, the hope of the whole community,” said Jason Lee ’06, who worked in Ocean Springs, Miss. “It was unbelievable, the damage we saw. Everything was gone, but nobody lost faith. It was something I’ll never forget.” The work was fully-funded by the Harvard Coop and organized by the Phillips Brooks House Association. Moss Point...