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Old 08-10-2019, 02:04 PM   #6439 (permalink)
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Originally Posted by oil pan 4 View Post
The earth is in a constant state of change.
For the planet to not be warming or cooling would be unnatural.
What you say is correct,but the caveat is,the timescales.The Holocene period that we live in,has been very stable since the last ice age,up until the Industrial Revolution.What we're currently experiencing falls outside the envelope of natural variability.
In 1870 we lived in a 58-F world.
Today,we live in a 59.94-F world.
At a doubling of carbon dioxide(560ppmv) we'll be living in a 62.86-F world.
I think we're at 411-ppmv today,compared to 280ppmv in 1870.
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