sci.energy

>Reply to article by: owl
>Date written: Mon, 06 Aug 2007 01:28:31 -0700
>MsgID:< @ >

>> >Abstract. Recent analyses indicate that the amount of atmospheric CO2
>> >required to cause dangerous climate change is at most 450 ppm, and
>> >likely less than that.

>> Past analysis has shown that 4400 ppm during the Late Ordovician period had
>> little effect on temperature. How does "recent analysis" account for that?

>Not sure where you got the glue to join those two dots.

At least you ask...

>Do you have a cite?

CO2 as a primary driver of Phanerozoic climate. 2004 Dana L. Royer, Robert A.
Berner, Isabel P. Montañez, Neil J. Tabor, and David J. Beerling
/GG/FACULTY/POPP/Royer%20et%20al.%202004%20GSA%

GEOCARB III: A REVISED MODEL OF ATMOSPHERIC CO2 OVER PHANEROZOIC TIME. 2001.
ROBERT A. BERNER and ZAVARETH KOTHAVALA.
/WVFossils/Reference_Docs/

>Looking for stuff, I'm coming up with the O period with Gondwaonaland
>curved around the South Pole and the northern hemisphere large-mass
>free. The refs highlight the paradox of high GHGs while the climate
>became unstable and slid in and out of ice ages. The end of the 50-
>million year period end in a cold-climate extinction period. There's
>no conlcusion there about CO2's effect being absent. What's your
>source?

See above.

The Sage

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"It is a cold fact: the Global Cooling presents humankind
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