Here on the Klimazwiebel we had a detailed account Richard Tol challenges assertion by Ottmar Edenhofer in ZDF - Richard Tol claimed that WG III Chair Otmar Edenhofer had given a false account in that TV program.
I had informed the IPCC secretariat (as well as Otmar Edenhofer) about Richard's Tol claim. After having not received a response, I inquired at Renate Christ, IPCC secretary on 17 Setpember 2010:
I informed you a few days ago that there have been published claims about false conclusions about consensus in the WG III report of AR4, and about misleading public statements of IPCC representatives. So far, you have not responded to this information; I assume that you do not intend to do so in future. Thus, I have to inform you that I will begin to include this case into my background exchanges with media and policymakers. Also I will point out that your office is still unable to deal professionally with such claims, even after the recommendations of IAC. Indeed, I had been told by journalists before that your office has a reputation of being reluctant in communicating.
This reminder gave a response after a few days, on 20. September 2010
Dear Mr. von Storch,
I acknowledge receipt of your message dated 17 September as well as a message from you to Mr. Edenhofer dated 11 September 2010. Both messages were received during my vacation and therefore I did not reply earlier. Mr. Edenhofer is currently traveling but I will get in touch with him and the appropriate IPCC bodies on the matter raised by you.
Allow me also to inform you that the recommendations of the IAC and their implementation will be considered by the upcoming Plenary Session of the IPCC.
Dr. Renate CHRIST
Secretary of the IPCC
Since then - nothing.
The Interacademy Council writes about the IPCC on p. 53 of its report:
Developing an effective communications strategy. In the wake of errors discovered in the Fourth Assessment Report, the IPCC has come under severe criticism for the manner in which it has communicated with the media. The lack of an ongoing media-relations capacity and comprehensive communications strategy has unnecessarily placed the IPCC’s reputation at risk and contributed to a decline in public trust of climate science.
Nothing learned so far. The same arrogance as before.