Turns out it's not nearly as much as the IPCC says. This paper will be presented to the EGU General Assembly in Vienna. This particular researcher found the IPCC overstated the CO2 effect by seven times, sound familiar?
The paper needs to be attacked to make sure the methodologies hold up but what is here is intriguing.
http://meetingorganizer.copernicus.org/EGU2011/EGU2011-4505-1.pdf
The paper needs to be attacked to make sure the methodologies hold up but what is here is intriguing.
http://meetingorganizer.copernicus.org/EGU2011/EGU2011-4505-1.pdf