US Climate Change Science Program web links
http://www.climatescience.gov/Library/sap/sap2-1/default.htm
and
http://www.climatescience.gov/Library/sap/sap3-1/default.htm
have additional information on Report 2.1, Report 3.1, respectively
The report 2.1 has two parts 2.1a and 2.1b.
Lead Authors for 2.1a
Lead Authors for 2.1b
Lead Authors for 3.1