Godstud wrote:…..
Saying that the temperatures go up by 1C for every 10 ppm increase doesn't make any sense.
Considering the fact that the exact relationship between atmospheric CO2 concentrations and global temperature increases is still very uncertain, it is highly doubtful that anyone has made this exact claim (except as a hypothesis).
The degree of uncertainty is described by the possible range of temperature increase from a doubling of atmospheric CO2. This is currently set at 1.5 degrees Centigrade to 4.5 degrees.
As you can see, this is a substantial range and shows that the climatology community does nit think there is a clear number like “1C for every 10 ppm”.
Note: Humans can survive at 4,000 ppm easily forever. They've tested submariners for months at 30,000+ ppm CO2 levels, and records no changes in health, intellect, or anything measurable.
The direct harm caused by CO2 is not a worry. For those of us who live in Edmonton or have loved ones who do (for example), the worry is the record wildfire smoke from the increased amount of wildfires, which causes many premature deaths from air pollutants.
For someone living in SE Asia, the main worry would be the increasing risk of flooding from sea level rise.