German electric utility executive Fritz Vahrenholt is co-author (along with geologist Sebastian Lüning) of a book expressing "skepticism" regarding the human contribution to global warming, which predictably has been trumpeted by the usual climate denial enablers. Why should we particularly care what Vahrenholt thinks about climate science? That is something of a mystery - he has a PhD in chemistry and has worked in the energy sector for Shell Oil and wind turbine maker RePower. Vahrenholt and Lüning both currently work for RWE Innogy, Germany's second-largest energy company (Vahrenholt as a manager, Lüning as a scientist in its oil and gas division).
Vahrenholt admits he has no expertise in climate science, but apparently his status as "Germanys Top Environmentalist" (a title which Vahrenholt appears to have been awarded just recently by anti-climate think tanks and denialists) and his climate "skepticism" are sufficient for some people to take his climate claims seriously. In an interview with Der Spiegel, Vahrenholt discusses why he chose to write a book rather than attempting to conduct and publish scientific research.
SPIEGEL: You make concrete statements on how much human activity contributes to climatic events and how much of a role natural factors play. Why don't you publish your prognoses in a professional journal?
Vahrenholt: Because I don't engage in my own climate research. Besides, I don't have a supercomputer in my basement. For the most part, my co-author, geologist Sebastian Lüning, and I merely summarize what scientists have published in professional journals -- just as the IPCC does.
Read the full debunking: http://www.skepticalscience.com/fritz-vahrenholt-duped-on-climate-change.html