Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

22nd Sep 2005, 21:52 GMT

A gradual lengthening of the snow-free season in Alaska's tundra, and a corresponding northward progression of the growth of shrubs and trees, may be creating a cycle of warmer and longer summers in the Alaskan Arctic according to a new study to be published in the Sept. 22, 2005, issue of Science Express.