Thanks for the link, it's fascinating. I'll see if I can download some data and play with it to get a feel for it. As for the water vapor condensation, thanks for pointing me into the relevant part of the report, I'll take a closer look. At first sight, I like it that they paid attention to this issue, and I don't like that they didn't pay enough attention (a statement of the type "this may be offset by that" sounds a bit too cavalier to me). But it's a start. Back to the data and the transparency. This is really, really positive, it should go a long way towards assuaging the discomfort of climate skeptics (like me).