In a recent question by a denier, a 2003 paper by Soon and Baliunas was cited. This paper analyzed various proxy studies and arrived at the conclusion that the Midieval Warm Period was warmer than today.
Shortly thereafter, 13 of the authors of papers cited by Baliunas and Soon refuted her interpretation of their work.
http://www.agu.org/sci_soc/prrl/prrl0319.html
Half of the editorial board of Climate Research, the journal that published the paper, resigned in protest against what they felt was a failure of the peer review process on the part of the journal.
http://www.arp.harvard.edu/sci/climate/journalclub/ChronicleEd.pdf
More recently, Osborn and Briffa repeated the Baliunas and Soon study but restricted themselves to records that were validated as temperature proxies, and came to a different result.
http://www.realclimate.org/index.php/archives/2006/02/a-new-take-on-an-old-millennium/
http://www.sciencemag.org/cgi/content/abstract/311/5762/841
Tags: