Thursday, May 19, 2011

Heavy Weather: The new normal in time of climate change

[WASHINGTON (By Deborah Zabarenko) – Heavy rains, deep snowfalls, monster floods and killing droughts are signs of a "new normal" of extreme U.S. weather events fueled by climate change, scientists and government planners said on Wednesday.

"It's a new normal and I really do think that global weirding is the best way to describe what we're seeing," climate scientist Katharine Hayhoe of Texas Tech University told reporters.

"We are used to certain conditions and there's a lot going on these days that is not what we're used to, that is outside our current frame of reference," Hayhoe said on a conference call with other experts, organized by the non-profit Union of Concerned Scientists.

An upsurge in heavy rainstorms in the United States has coincided with prolonged drought, sometimes in the same location, she said, noting that west Texas has seen a record-length dry period over the last five years, even as there have been two 100-year rain events.

Hayhoe, other scientists, civic planners and a manager at the giant Swiss Re reinsurance firm all cited human-caused climate change as an factor pushing this shift toward more extreme weather.]

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