Global warming of last 50 years “unusual” in at least the previous 1300 years

Fri, 2007-02-02 13:14Bill Miller
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Global warming of last 50 years “unusual” in at least the previous 1300 years

The long-awaited IPCC report said a warming of about 0.2 degrees Centigrade per decade is projected for the next two decades. Even if greenhouse-gas and aerosol concentrations had been kept constant at 2000 levels, further warming of about 0.1 degrees Centigrade per decade would be expected.

Warming is expected to be greatest over land and at high northern latitudes, the report said, and least over the Southern Ocean and parts of the North Atlantic.

Even if greenhouse-gas concentrations were stabilized, warming and sea-level rise would continue for centuries due to “the timescales associated with climatic processes and feedbacks.”

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At 9:35 p.m. on Saturday, May 30, Greeley, Colorado was struck by a 3.4 magnitude earthquake. Earthquakes are highly unusual in eastern Colorado, raising speculation that it was a “frackquake” — a man-made earthquake stimulated by the disposal of contaminated drilling water in deep injection wells. This disposal technique forces wastewater generated from hydraulic fracturing (fracking) deep into underground rock formations, lubricating layers of rock that would not ordinarily be subject to movement.

Earthquakes are so rare in eastern Colorado that the U.S....

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