You will not find any paper that can state categorically that increased CO2 is the primary cause for the increase in temperature. What we know is increased CO2 will cause a certain level of temperature increase and that effect has already happened. Pumping a bit (say double what we have at the moment) into the atmosphere will have 6/10ths of nothing effect. The mystery at the moment is what is continuing to drive the temperature increase. Yes graphs show increased CO2 and temp. But increases CO2 or indeed methane does not explain the rising temperature.And it is not just statistics, the mechanism is well understood scientifically (very unlike the peas causing divorce).
It’s funny really as temperatures increase CO2 will be released that is at present locked up in the ground and there is damn all we can do about it. The good news is that increased CO2 is NOT driving the scale or rate of the increased temperature.
Climate change / CO2 has become a religion, anyone who isn’t a believer is considered a radical and ‘mob’ consensus rules.
I was taught that protons and neutrons were the smallest particles and that the universe began with the Big Bang. It was heresy to think otherwise. One we know isn’t true and the other is now believed to be wrong.