Climate Sensitivity Reconsidered
"The American Physical Society (APS), representing over 50,000 physicists, has re-opened the discussion of the issue of global warming. In 2007 the Intergovernmental Panel on Climate Change (IPCC) concluded that more than half of the "Global warming" of the past 50 years (IPCC, 2007) had been caused by CO2 emissions from humans and that human activity would cause further rapid warming . That conclusion is now being challenged by new data and the failure of old data to predict what has actually happened to the climate since 2001."
Global warming challenged by new data and failed predictions
Here's the report. I hope you like math!
Discussion
"We have set out and then critically examined a detailed account of the IPCC’s method of evaluating climate sensitivity. We have made explicit the identities, interrelations, and values of the key variables, many of which the IPCC does not explicitly describe or quantify. The IPCC’s method does not provide a secure basis for policy-relevant conclusions. We now summarize some of its defects."
(Too many to list, read the report)
Conclusion
"Even if temperature had risen above natural variability, the recent solar Grand Maximum may have been chiefly responsible. Even if the sun were not chiefly to blame for the past half-century’s warming, the IPCC has not demonstrated that, since CO2 occupies only one-ten-thousandth part more of the atmosphere that it did in 1750, it has contributed more than a small fraction of the warming." (+ much more)
APS Physics | FPS | Climate Sensitivity Reconsidered