Physical modeling debate

Physical modeling debate

Former Chair of the IPCC Working Group I Report, has commented on Lindzen's criticisms of the IPCC:,saying that Lindzen, having previously expressed satisfaction with the report, had "gone on to express his view that the conclusions of the Policymakers Summary did not faithfully represent the chapters. But he has never provided any supporting evidence for that statement." He emphasized that the Policymaker's Summaries were "agreed unanimously at intergovernmental meetings involving over 200 government delegates from around 100 countries...after several days of scientific debate (only scientific arguments not political ones are allowed) the main purpose of which is to challenge the scientific chapter authors regarding the accuracy, clarity and relevance of the summary and most especially its consistency with the underlying chapters."

document before the professor, one of the lead authors of the IPCC Working Group I Report, has criticised the IPCC  Taking Chapter 7, Physical Processes, on which he worked, he said that it "found numerous problems with model treatments – including those of clouds and water vapor", the chapter was summarized in the single sentence "Understanding of climate processes and their incorporation in climate models have improved, including water vapor, sea-ice dynamics, and ocean heat transport."