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Green ‘Smear Campaign’ Against IPCC Lead-Author Richard Tol

David Rose, Mail on Sunday

The professor who refused to sign last week’s high-profile UN climate report because it was too ‘alarmist’, has told The Mail on Sunday he has become the victim of a smear campaign.  

Richard Tol claims he is fighting a sustained attack on his reputation by a key figure from a leading institution that researches the impact of global warming.

Prof Tol said: ‘This has all the characteristics of a smear campaign. It’s all about taking away my credibility as an expert.’

Prof Tol, from Sussex University, is a highly respected climate economist and one of two ‘co-ordinating lead authors’ of an important chapter in the 2,600-page report published last week by the UN Intergovernmental Panel on Climate Change (IPCC).

He has been widely criticised by green campaigners after he claimed that the much shorter ‘summary for policymakers’ – hammered out in all-night sessions between scientists and government officials over a week-long meeting in Yokohama, Japan – was overly ‘alarmist’.

In his view, the summary focused on ‘scare stories’ and suggestions the world faced ‘the four horsemen of the apocalypse’.

He said he did not want his name associated with it because he felt ‘uncomfortable’ with the way the  summary exaggerated the economic impact of global warming.

The source of the alleged smear campaign is Bob Ward, director of policy at the London School of Economics’s Grantham Research Institute on Climate Change.

Mr Ward – neither an economist nor a climate expert – claimed on the institute’s website that he was waging ‘an ongoing struggle’ to force Prof Tol to correct ‘errors’ in his work.

Mr Ward had earlier sent an email  disparaging Prof Tol’s research to  several leading IPCC scientists and officials. 

They included Prof Tol’s fellow co-ordinating lead author, Doug  Arent, director of America’s National Renewable Energy Laboratory; and Professor Chris Field of Stanford  University, the overall chairman and editor of the IPCC report.

The email claimed that Prof Tol’s ‘antics’ were ‘likely to reflect badly on the IPCC  and his co-authors’. In response Professor Arent informed Mr Ward that the chapter he co-ordinated with Prof Tol  was ‘double and triple checked’.

He added that after Mr Ward – one of the IPCC’s registered ‘reviewers’ –  found a tiny, statistical error in an  earlier draft, it was revised.