Here's a full list of the scientists that Armstrong and Green contacted -- the ones who sent a "useful response" are noted parenthetically. Note that of the 51 who responded, 42 were deemed as having given a useful response.

IPCC Working Group 1

Myles Allen, Richard Alley, Ian Allison, Peter Ambenje, Vincenzo Artale, Paulo Artaxo, Alphonsus Baede, Roger Barry, Terje Berntsen, Richard A. Betts, Nathaniel L. Bindoff, Roxana Bojariu, Sandrine Bony, Kansri Boonpragob, Pascale Braconnot, Guy Brasseur, Keith Briffa, Aristita Busuioc, Jorge Carrasco, Anny Cazenave, Anthony Chen (useful response), Amnat Chidthaisong, Jens Hesselbjerg Christensen, Philippe Ciais (useful response), William Collins, Robert Colman (useful response), Peter Cox, Ulrich Cubasch, Pedro Leite Da Silva Dias, Kenneth L. Denman, Robert Dickinson, Yihui Ding, Jean-Claude Duplessy, David Easterling, David W. Fahey, Thierry Fichefet (useful response), Gregory Flato, Piers M. de F. Forster (useful response), Pierre Friedlingstein, Congbin Fu, Yoshiyuki Fuji, John Fyfe, Xuejie Gao, Amadou Thierno Gaye (useful response), Nathan Gillett (useful response), Filippo Giorgi, Jonathan Gregory (useful response), David Griggs, Sergey Gulev, Kimio Hanawa, Didier Hauglustaine, James Haywood, Gabriele Hegerl (useful response), Martin Heimann (useful response), Christoph Heinze, Isaac Held (useful response), Bruce Hewitson, Elisabeth Holland, Brian Hoskins, Daniel Jacob, Bubu Pateh Jallow, Eystein Jansen (useful response), Philip Jones, Richard Jones, Fortunat Joos, Jean Jouzel, Tom Karl, David Karoly (useful response), Georg Kaser, Vladimir Kattsov, Akio Kitoh, Albert Klein Tank, Reto Knutti, Toshio Koike, Rupa Kumar Kolli, Won-Tae Kwon, Laurent Labeyrie, René Laprise, Corrine Le Quéré, Hervé Le Treut, Judith Lean, Peter Lemke, Sydney Levitus, Ulrike Lohmann, David C. Lowe, Yong Luo, Victor Magaña Rueda, Elisa Manzini, Jose Antonio Marengo, Maria Martelo, Valérie Masson-Delmotte, Taroh Matsuno, Cecilie Mauritzen, Bryant Mcavaney, Linda Mearns, Gerald Meehl, Claudio Guillermo Menendez, John Mitchell, Abdalah Mokssit, Mario Molina, Philip Mote (useful response), James Murphy, Gunnar Myhre, Teruyuki Nakajima, John Nganga, Neville Nicholls, Akira Noda, Yukihiro Nojiri, Laban Ogallo, Daniel Olago, Bette Otto-Bliesner, Jonathan Overpeck (useful response), Govind Ballabh Pant, David Parker, Wm. Richard Peltier, Joyce Penner (useful response), Thomas Peterson (useful response), Andrew Pitman, Serge Planton, Michael Prather (useful response), Ronald Prinn, Graciela Raga, Fatemeh Rahimzadeh, Stefan Rahmstorf, Jouni Räisänen, Srikanthan (S.) Ramachandran, Veerabhadran Ramanathan, Venkatachalam Ramaswamy, Rengaswamy Ramesh, David Randall (useful response), Sarah Raper, Dominique Raynaud, Jiawen Ren, James A. Renwick, David Rind, Annette Rinke, Matilde M. Rusticucci, Abdoulaye Sarr, Michael Schulz (useful response), Jagadish Shukla, C. K. Shum, Robert H. Socolow (useful response), Brian Soden, Olga Solomina (useful response), Richard Somerville (useful response), Jayaraman Srinivasan, Thomas Stocker, Peter A. Stott (useful response), Ron Stouffer, Akimasa Sumi, Lynne D. Talley, Karl E. Taylor (useful response), Kevin Trenberth (useful response), Alakkat S. Unnikrishnan, Rob Van Dorland, Ricardo Villalba, Ian G. Watterson (useful response), Andrew Weaver (useful response), Penny Whetton, Jurgen Willebrand, Steven C. Wofsy, Richard A. Wood, David Wratt, Panmao Zhai, Tingjun Zhang, De’er Zhang, Xiaoye Zhang, Zong-Ci Zhao, Francis Zwiers (useful response)

Union of Concerned Scientists

Brenda Ekwurzel, Peter Frumhoff, Amy Lynd Luers

Channel 4 “The Great Global Warming Swindle” documentary (2007)

Bert Bolin, Piers Corbyn (useful response), Eigil Friis-Christensen, James Shitwaki, Frederick Singer, Carl Wunsch (useful response)

Wikipedia’s list of global warming “skeptics”

Khabibullo Ismailovich Abdusamatov (useful response), Syun-Ichi Akasofu (useful response), Sallie Baliunas, Tim Ball, Robert Balling (useful response), Fred Barnes, Joe Barton, Joe Bastardi, David Bellamy, Tom Bethell, Robert Bidinotto, Roy Blunt, Sonja Boehmer, Andrew Bolt, John Brignell (useful response), Nigel Calder, Ian Castles (useful response), George Chilingarian, John Christy (useful response), Ian Clark, Philip Cooney, Robert Davis, David Deming (useful response), David Douglass, Lester Hogan, Craig Idso, Keith Idso, Sherwood Idso, Zbigniew Jaworowski, Wibjorn Karlen, William Kininmonth, Nigel Lawson, Douglas Leahey, David Legates, Richard Lindzen (useful response), Ross Mckitrick (useful response), Patrick Michaels, Lubos Motl (useful response), Kary Mullis, Tad Murty, Tim Patterson, Benny Peiser (useful response), Ian Plimer, Arthur Robinson, Frederick Seitz, Nir Shaviv, Fred Smith, Willie Soon, Thomas Sowell, Roy Spencer, Philip Stott, Hendrik Tennekes, Jan Veizer, Peter Walsh, Edward Wegman Other sources Daniel Abbasi, Augie Auer, Bert Bolin, Jonathan Boston, Daniel Botkin (useful response), Reid Bryson, Robert Carter (useful response), Ralph Chapman, Al Gore, Kirtland C. Griffin (useful response), David Henderson, Christopher Landsea (useful response), Bjorn Lomborg, Tim Osborn, Roger Pielke (useful response), Henrik Saxe, Thomas Schelling (useful response), Matthew Sobel, Nicholas Stern (useful response), Brian Valentine (useful response), Carl Wunsch (useful response), Antonio Zichichi.