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Old 01-13-2025, 10:55 PM   #87
TherapyforGlencross
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Join Date: Mar 2014
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Quote:
Originally Posted by GreenLantern2814 View Post
If you look at the global temperatures of this planet over the last million years, you will notice that the planet oscillates by about 12-20 degrees Celsius. Quite reliably, in fact.

You will also see massive, rapid spikes in warming for 5-10,000 years, followed by periods of cold (as low as eight degrees below ‘modern normal’) which last 50-90,000 years.

There have been four times in the last 500,000 years where global temperatures reached higher than they are today, and in each case, a 50,000+ year period of extreme cold occurred directly after.

We happen to be at the very end of one of these rapid warming spikes - maybe we have hundreds of years left, maybe thousands - who can say. I’ve heard that by 2200, Alberta is going to be closer to Northern California, climatologically speaking.

What I would say is, being able to grow crops at scale indoors/with genetic modification to adapt them better to changing environments, and an expertise in the extraction of fuel in extreme cold environments might be a useful knowledge set to have in the next 100,000 years. (And also, advanced solar technology - it all works together.)

That, and trying to make any scientific conclusions, much less formulate global policy, based on a 200 year sample size of rising temperatures (during the middle of a warming period) seems, at best, misguided.

Oh, and finally, polluting our environment is, inherently, bad, and we should, as a matter of public policy, try to ensure our societies operate as cleanly as possible.
Just out of interest…

MIS-5 (our last interglacial): sea surface temperatures show temperatures were not much higher, and perhaps lower, than our current global average (albeit, this is ongoing research, it’s certainly not conclusive). Also — the period of warming during Milankovich cycles is much slower than our current warming — so there must be additional forcings occurring. Additionally, our current SST likely won't reach equilibrium to our current warming for at least another ~1000 years. So, a bit different than in past climatic situations. This likely demonstrates a lag of water mass (which in the past has been correlated with CO2 concentrations) in our current time considering that MIS-5 had substantially higher sea levels.

Last edited by TherapyforGlencross; 01-13-2025 at 11:05 PM.
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