date: Mon, 18 Jun 2007 12:30:29 +0100 from: "Roger Coe" subject: Solar Irradiance Debate to: "Phil Jones" Phil, Sorry for the delay in replying to yours of 01 June 2007, I have been away. II have also perused as many of the papers you referred to that I am able to access. Particularly useful is the Introduction/Review by Joanna Haigh to the 2005 ISSI workshop on Solar Variability and Planetary Climates. Here she comments that the construction of a TSI composite remains controversial, a view supported by the latest statements of Frohlich and Richard Willson on their respective websites. Hence the AR4 Section 2.7.1.1.2 dismissal of the ACRIM composite to be instrumental rather than solar in origin is a bit controversial. Similarly IPCC in their discussion on solar RF since the Maunder Minimum are very dependent on the paper by Wang et al (which I have been unable to access) in the decision to reduce the solar RF significantly despite the many papers to the contrary in the ISSI workshop. All this leaves the IPCC almost entirely dependent on CO2 for the explanation of current global temperatures as in Fig 2.23. since methane CFCs and aerosols are not increasing. I wonder how Judith Lean would comment on the latest developments. Regards Roger