Despite warming, peak's glaciers still grow on Mt. Shasta

[Dover]

MOUNT SHASTA, California (AP) -- Global warming is shrinking glaciers all over the world, but the seven tongues of ice creeping down Mount Shasta's flanks are a rare exception: They are the only known glaciers in the continental U.S. that are growing.

Reaching more than 14,000 feet above sea level, Mount Shasta is one of the state's tallest peaks, dominating the landscape of high plains and conifer forests in far Northern California.

Nearby Indian tribes referred to its glaciers as the footsteps made by the creator when he descended to Earth. Hikers flock to Shasta's peak every summer to scale them.

With glaciers retreating in the Sierra Nevada, the Rocky Mountains and elsewhere in the Cascades, Mount Shasta -- a volcanic peak at the southern end of the Cascade range -- is actually benefiting from changing weather patterns over the Pacific Ocean.

"When people look at glaciers around the world, the majority of them are shrinking," said Slawek Tulaczyk, an assistant professor of earth sciences at the University of California, Santa Cruz, who led a team studying Shasta's glaciers. "These glaciers seem to be benefiting from the warming ocean."

Climate change has cut the number of glaciers at Montana's Glacier National Park from 150 to 26 since 1850, and some scientists project there will be none left within a generation.

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Although Mount Shasta's glaciers are growing, researchers say the 4.7 billion cubic feet of ice on its flanks could be gone by 2100. For the glaciers to remain their current size, Shasta would have to receive 20 percent more snowfall for every 1.8-degree Fahrenheit increase in temperature, Tulaczyk said..>>

http://www.cnn.com/2008/TECH/science/07/08/growingglacier.ap/index.html

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