Thu Dec 27, 2012, 04:12 PM
Speck Tater (10,618 posts)
200 year long drought might be "normal", even without global warming.
As bad a global warming is, and as much worse as it will get, extreme weather events have been pretty normal even in the best of times.
From the book The End of the Long Summer (Dianne Dumanoski):
...from roughly A.D. 800 to 1300 rainfall in California fell to only 25% of what has been the recent norm and stayed at that level for more than two centuries--a grim period when 50 percent of the West staggered under a megadrought. During this time, sand dunes blanketed vast areas of the Great Plains stretching all the way from Texas and Oklahoma through the heartland to Saskatchewan and Manitoba.
The bottom line is that the interconnected and interdependent global economy is fragile enough already that even without global warming the whole house of cards could come tumbling down in the face of normal climate variation. Add global climate change to the mix and the crash of industrial civilization seems virtually certain.
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200 year long drought might be "normal", even without global warming. (Original post)
|Speck Tater||Dec 2012||OP|
|Warren Stupidity||Dec 2012||#4|
Response to Speck Tater (Original post)
Thu Dec 27, 2012, 04:46 PM
happyslug (13,657 posts)
1. 800-1300 AD. that sounds like the Medieval Warm Period
Basically, what seems to have cause warm weather in Europe and the North Atlantic, caused droughts in the American West.
And that period was NOT as warm as today's climate: