[Tom Curtis reports interesting details about the Lamb graph. Note how Steve tries to ignore Curtis’ point while attacking Curtis’ person.]
In 2001 Daley wrote:
In 1995, the Intergovernmental Panel on Climate Change (IPCC) released its 5-yearly report on climate change , in a blaze of publicity, which contained the now infamous phrase that there was “a discernible human influence on global climate. Also contained in this report but attracting less attention, was an assessment of how global climate had changed, not just during the previous 95 years, but also the past 1,000 years. In so doing they presented this graph (Fig 1.) of temperature change since 900 AD.
That wording is retained on Feb 1st, 2003, but changes to an attribution of the graph to IPCC 1990 in Nov 3rd, 2003. Apparently I was incorrect about 2004, Daley corrected the attribution earlier than that.
Steve’s update reference to “at that time” is vague. The natural interpretation (IMO) is that it refers to the time in 2008 when you diagnosed the provenance. However, in 2007 Connolley diagnosed the attribution to Lamb on Wikipedia (see linked page previously by Connolley and myself). You either need to correct the claim that he did not know the source to read that he had noted it resembled a graph by Lamb, or amend the time reference so that it explicitly refers to 2005.
Daley corrected the attribution between Feb 1st 2003 and June 26th 2003: