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Terminal IceHot enough for you? Yeah, us too. Go to the bottom of the planetor the topand you can't miss the warning signs of a warm apocalypse. And at the heart of the mystery, like broken shards of a colder climate, float the icebergs, ghost-white messengers trying to tell us something we can't quite fathom. By Ian Frazier
Globally, there's a persistent trickling as enormities of ice unfreeze. The Greenland ice sheet loses 13 trillion gallons of fresh water a year, contributing a measurable percentage to the world's annual sea-level rise. Every year, the level of the sea goes up about the thickness of a dime. Other meltwater, and the warming of the planet, which causes water to expand, contribute too. A dime's thickness a year doesn't worry most people, so long as it doesn't get worse, which most scientists don't think it necessarily will any time soon, though who can say for sure? The first nation to ratify the Kyoto Protocol on Climate Change is the island of Fiji, one eye on the Pacific lapping at its toes. And every year, first attracting notice in the seventies, picking up speed in the steamy eighties and steamier nineties, giant icebergs begin splashing into the news. Usually they arrive in single-column stories on an inside page: "An iceberg twice as big as Rhode Island has broken away from Antarctica and is drifting in the Ross SeaÉIt is about 25 miles wide and 98 miles long." "The largest iceberg in a decade has broken off an ice shelf in AntarcticaÉas if Delaware suddenly weighed anchor and put out to sea." Over the years, a number of Rhode Islands and Delawares of ice, and even a Connecticut, drift into type and out again. The more notable ones are sometimes called "celebrity icebergs," and in the cold Southern Ocean (all the biggest icebergs are from Antarctica) an occasional berg has a longevity in the spotlight that a human celebrity could envy. Iceberg C-2as scientists labeled itdrifts for 12 years and 5,700 miles, nearly circumnavigating Antarctica, before breaking into pieces of non-newsworthy size. Glaciologists say there's probably no connection between global climate change and the increase in the numbers of big Antarctic icebergs. They say the ice shelves at the edge of the continent, from which these icebergs come, have grown out and shrunk back countless times in the past. Our awareness of the icebergs has mainly to do with satellite technology that allows us to see them as we never could before. Still, when you've recently been through the hottest year of the past six centuries, and suddenly there's a 2,700-square-mile iceberg on the loosewell, people talk.
Contributing editor IAN FRAZIER wrote about outdoor phobias in October 2003. Subscribe to Outside and get a FREE Gift! Give the gift of Outside Magazine! Subscribe to Outside Online's free weekly e-mail newsletter featuring gear reviews, fitness advice, galleries, podcasts, and more. |
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