In December 2009 , after the Climatic Research Unit email controversy , Singer wrote an opinion piece for Reuters in which he said the scientists had misused peer review , pressured editors to prevent publication of alternative views , and smeared opponents . He said the leaked e-mails showed that the " surface temperature data that IPCC relies on is based on distorted raw data and algorithms that they will not share with the science community . " He argued that the incident exposed a flawed process , and that the temperature trends were heading downwards even as greenhouse gases like CO2 were increasing in the atmosphere . He wrote : " This negative correlation contradicts the results of the models that IPCC relies on and indicates that anthropogenic global warming ( AGW ) is quite small , " concluding " and now it turns out that global warming might have been ' man made ' after all . " A British House of Commons Science and Technology Select Committee later issued a report that exonerated the scientists , and eight committees investigated the allegations , finding no evidence of fraud or scientific misconduct
Climatic Research Unit email controversy
Climatic Research Unit email controversy
Fred Singer