SSDD
Gold Member
- Nov 6, 2012
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Hmm , I guess you should share your sources. I've heard 5 degrees C will send us into a heat spiral, not 2..
Interesting, since for most of this planet's history, the average mean temperature has been closer to 22C...quite a bit more than 5 degrees warmer than the present 14.8C.
I can only guess that you never really considered the past when you were forming your present position. If you did, and still hold an alarmist position, then one can only conclude that you hold your position for political, and not scientific reasons.
As I said, for most of the planet's history, it has been considerably warmer than the 5 degrees that you believe would initiate a temperature spiral... Here are a couple of accepted reconstructions of the temperature history of the planet.
Note the first graph also includes the atmospheric CO2 levels for the various periods. Note that the several ice ages earth has experienced; most began with CO2 levels at, or far in excess of 1000ppm and at least one ice age began with CO2 levels in excess of 4000ppm. The slide into the ice age we are currently exiting from began with CO2 levels greater than the present. That doesn't really square with the proposed greenhouse hypothesis....does it? Fearing that CO2 will cause temperatures to spiral out of control when the ice age we are presently exiting began with CO2 levels higher than those at present makes absolutely no sense whatsoever.
Considering the temperature history of our planet, tell me, what is surprising about the fact that we are in a warming phase....and again, considering the temperature history of the planet, do you really believe there is anything that we can realistically do to prevent the earth's inevitable warmup back to the neighborhood of 22C at some point in the future?
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