I have degrees in physics & geophysics also.
I absolutely don't buy into the notion that human activity can do any more then local changes, even then it is hardly permanent. The sun does it all ! Where the sun goes we go ! The second main contributor is the dynamic earth.
"I absolutely don't buy into the notion that human activity can do any more then local changes, even then it is hardly permanent. The sun does it all ! Where the sun goes we go ! The second main contributor is the dynamic earth."
My position is that I don't know.
I understand that CO2 levels have some historical correlation with surface temperature but here is a graph that shows a major problem with CO2 being the currently controlling factor.
Look at the data from 1945 to 1976. The temperature is basically flat with random fluctuations and yet this was a time of great industrialization and CO2 increase.