claim: In a paper published online this week in the Journal of Geophysical Research-Atmosphere, economics professor Ross McKitrick says the resulting discrepancies may be leading to an overstatement of the role of greenhouse gases in the atmosphere.
evidence: On the day of publication, the ExxonMobil funded lobbying website Tech Central Station issued a press release headed TCS Newsflash : Important Global Warming Study Audited – Numerous Errors Found; New Research Reveals the UN IPCC 'Hockey Stick' Theory of Climate Change is Flawed announcing that Canadian business executive Stephen McIntyre and economist Ross McKitrick have presented more evidence that the 20th century wasn't the warmest on record.