repoman
Contributor
Can anyone come up with a rough way to compare the past levels of atmospheric CO2 in the distant (million years+) past to the level of CO2 we have now and make get to with more fossil fuel burning?
I am trying to get a mostly linear relationship to say something like:
1 million years ago = "x" more ppm CO2 to have same temperature now at the sun's current output. The solar output vs time is reasonably well known and that will help to give a level of CO2 vs time for our recent preindustrial climate. I am just looking for a linear equation even if it is not as accurate as a more complex equation.
I get sick of people pulling out very old (tens or hundreds of MYA) records of high CO2 levels with mild or cold climates and saying that CO2 does not cause global warming.
I am trying to get a mostly linear relationship to say something like:
1 million years ago = "x" more ppm CO2 to have same temperature now at the sun's current output. The solar output vs time is reasonably well known and that will help to give a level of CO2 vs time for our recent preindustrial climate. I am just looking for a linear equation even if it is not as accurate as a more complex equation.
I get sick of people pulling out very old (tens or hundreds of MYA) records of high CO2 levels with mild or cold climates and saying that CO2 does not cause global warming.