They include Professor Michael Mann the Penn State University scientist who was recently cleared of allegations of scientific misconduct in a much criticised enquiry, conducted by peers at his own university.
In addition, Professors Keith Briffa and Tim Osborn from the Climatic Research Unit at the University of East Anglia featured on the list of speakers. Both feature prominently in the November 2009 email release from the CRU.
They are attending a conference of Statistical Climatology at the Pollock Halls organised by Edinburgh University. The conference is hosted by our own local Professor Gabi Hegerl with Professors Tom Crowley and Simon Tett also taking part. The three also feature in the CRU emails release.
More background here.