Does the mere existence of a paper in a peer-reviewed journal make it a priori relevant and worthy of inclusion in a "state of the science" literature review like the IPCC reports? I see so many people on both sides of this debate (and many other debates!) tossing out articles published in peer-reviewed journals as though they are pure, distilled, single-malt fact. (The relevant example in this thread being the enumeration by Pielke of papers being ignored by the IPCC) I have (perhaps erroneously) always considered getting published in a respected journal as merely the first peer review, which is followed by the arguably more rigorous peer review: being read and evaluated by the readership and being: repeated/accepted/discredited/verified/argued/refined/etc... I suppose I had expected a paper to only be relevant after it has received a certain degree of acceptance by more than the few peers required to get published in the first place.
I agree entirely. I don't think last year's AR4 considered anything published later than 2005 (don't quote me on that, though

) partly because of the length of the IPCC process but also because this wider post-publication peer review takes time.
I am not necessarily accusing any of the papers mentioned by Pielke, etc. as being discredited or bogus; I'm just curious if their mere presence is compelling, or if they require subsequent evaluation to determine their validity and worthiness to appear in a literature review (and I am ignorant of whether or not they have actually achieved this level of acceptance). The same question applies to any paper authored and successfully published by Mann, Hansen, etc.
As you'll have noticed, I'm not down with the description "literature review". The IPCC reports are more than that. They collate all the known science, including recent observations and papers, and present it to the clients. That involves a lot of boiling-down.
Pielke claims that his list of papers are being ignored, but he can no more prove that than he can prove any negative. What he seems to mean is that the IPCC does not come to the conclusions expressed in these papers. Which, if the papers are unimpressive, is unsurprising. If they
are impressive they'll be cited in further papers, and not just those that demolish them. If that's happening the IPCC will have considered these papers and the follow-ups.
What I see as most revealing is the GWSceptic focus on the IPCC, not the wide world of science. So, for instance, CoolSceptic can think the IPCC is able to "sweep these papers under the carpet", as if everything has to be cleared through them. Governments are assumed to
only get their scientific advice through the IPCC, not their own advisors and national institutions. They set up a very simplified (and
personalised) world to take refuge in.