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Yes, climate change has been going on for over 4.5 billion years on this planet. And at times has wiped out as much as 95% of the species then living.
Yellowstone has a periodicity of roughly 600,000 years. It last erupted, a major eruption, about 640,000 years ago. The massive landslides of the Hawian and Azores islands could unleash some devestating tsunamis. And the subduction zone on the West Coast, from Cape Mendiceno, California to the north end of Vancouver Island, British Columbia, is capable and will unleash a 9 or greater quake.
But these are thing that we cannot do anything about. The GHGs that we have put into the atmosphere, and the effect that they are already having is our own doing, and we can cease to do it.
Hi Rocks,
We still run into the mathematics of the whole thing, though. The CO2 portion of the air is less than 4 ppm. 4 1000's of a %.
The total of all GHG's is about 5% of the total air. The CO2 portion of the GHG's is 3% of the 5%. The Anthropogenic contribution to the that % is 3%. The anthropogenic contribution of CO2 to the Air is .05x.03x.03=0.000045. 4.5 1000's of 1 percent.
The warmth of the climate is affected by various factors most of which overpower the effect of CO2. The Sun, the ocean, ocean currents, continental drift, the planet's magnetic field, volcanism, particualte air pollution and more.
The effect of GHG's is a small part of any climate change and the anthropogenic contribution to this small part is miniscule. In this thread, the IPCC is quoted as saying that it is 90% certain that the anthropogenic contribution to atmospheric CO2 is the cause of warming. Does this make anyone wonder why they are so certain?