Arctic Lands Slumping From Heat

| Thu Sep. 27, 2007 8:04 PM EDT

Temperatures got so hot in the Arctic this summer that researchers are scrambling to revise their forecasts—fast-forwarding to a future they thought was decades away. On Melville Island, site of a Queen's University study, July air temperatures soared over 20ºC (68ºF). Average July temps run 5ºC (41ºF). The team watched in amazement as water from melting permafrost lubricated the topsoil, causing it to slide down slopes, clearing everything in its path and thrusting up ridges at the valley bottom that piled up like a rug. Scott Lamoureux, leader of the International Polar Year project, and an expert in hydro-climatic variability and landscape processes, described: "The landscape was being torn to pieces, literally before our eyes. A major river was dammed by a slide along a 200-metre length of the channel. River flow will be changed for years, if not decades to come. If this were to occur in more inhabited parts of Canada, it would be catastrophic in terms of land use and resources." Well, guess what? It is going to occur in inhabited parts of Canada. It's going to occur in your neighborhood, too, wherever you live, whatever your local variant of catastrophe: flood, drought, thaw, freeze, cyclone, or strange, mutant combinations thereof… On a personal note, I just got back from the high Sierra (Nevada), where the glaciers have dwindled to dirty icefields and the creeks run with dust and hungry bears are biting sleeping tourists, then getting killed for it. Makes you want to cry. JULIA WHITTY

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