Originally Posted by longview View Post
The evidence is that the Global average temperatures based on the GISS have increased by .8 C since 1880.
At the same time CO2 levels have increased from 280 ppm to 401 ppm.
The AGW predictions from the IPCC say doubling the CO2 level will result in a temperature
increase between 1.5 and 4.5 C.
Baede et al:
We are 43% of our way to doubling CO2, but the diminishing response curve of CO2
means we should have seen 52% of the effect, about .6°C.
This means all of the remaining variables of warming are contained in .2°C, over 133 years.
.2°C per century is well within the natural variability.
Does this mean Human activity is not causing some warming, of course not,
it does mean the warming will likely be in the low end of the IPCC prediction,
and not catastrophic.
We have real problems to worry about, without having to create artificial ones.