Do you have a reference for that? I'm an AGW denier in general, but they say CO2 concentrations have risen from about 270 PPM to 410 PPM over the past century. If most of the CO2 is not manmade, what accounts for the rise, and why isn't it better publicized?
Wild fires, and especially volcanoes.......
About two weeks ago there was a huge wildfire in Alberta Canada and the smoke carried all the way to S.E. Michigan and in sufficient amount to make the totally cloudless sky hazy.......
In exactly what spot ?
Do you believe that in 1919 they had accurate CO2 measuring equipment and that there were CO2 measurement stations positioned all over the globe ?
What is the amount of CO2 in the air, at your house ? It's not CO2 that man 'releases' into the atmosphere that changes the temperature of the air. It's the heat we put in the air that makes the air warmer.