Not enough to alter a planet.
I can tell that you have really studied the history of the earth and the various conditions under which it has existed.
So let me ask this; when was the last time that man took trillions of pounds of oil and coal out of the ground and burnt them? When did man last do that and what was the end result after this had occurred?
This one is a softball question for you. Piece of cake. You can thank me later. Show your stuff now.
I can also note that you don't have any knowledge of geological processes. The supervolcanoes produced magnitudes on the exponential scale greater than what you are describing.