Global Warming Skeptics

I was shocked to discover that Wikipedia has a list of scientists who differ from global warming orthodoxy:

Scientists questioning the accuracy of IPCC climate projections

These scientists have said that it is not possible to project global climate accurately enough to justify the ranges projected for temperature and sea-level rise over the next century. They may not conclude specifically that the current IPCC projections are either too high or too low, but that the projections are likely to be inaccurate due to inadequacies of current global climate modeling.

• David Bellamy, botanist.^{[14][15][16][17]}
• Lennart Bengtsson, meteorologist, Reading University.^[18][19]
• Judith Curry, Professor and former chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology.^{[20][21][22][23]}
• Freeman Dyson, professor emeritus of the School of Natural Sciences, Institute for Advanced Study; Fellow of the Royal Society ^[24][25]
• Steven E. Koonin, theoretical physicist and director of the Center for Urban Science and Progress at New York University^[26][27]
• Richard Lindzen, Alfred P. Sloan emeritus professor of atmospheric science at the Massachusetts Institute of Technology and member of the National Academy of Sciences^{[28][29][30][31]}
• Craig Loehle, ecologist and chief scientist at the National Council for Air and Stream Improvement.^{[32][33][34][35][36][37]}
• Nils-Axel Mörner, retired head of the Paleogeophysics and Geodynamics Department at Stockholm University, former chairman of the INQUA Commission on Sea Level Changes and Coastal Evolution (1999–2003)^[38][39]
• Garth Paltridge, retired chief research scientist, CSIRO Division of Atmospheric Research and retired director of the Institute of the Antarctic Cooperative Research Centre, visiting fellow Australian National University^[40][41]
• Denis Rancourt, former professor of physics at University of Ottawa, research scientist in condensed matter physics, and in environmental and soil science^{[42][43][44][45]}
• Harrison Schmitt, geologist, Apollo 17 Astronaut, former U.S. Senator.^[46]
• Peter Stilbs, professor of physical chemistry at Royal Institute of Technology, Stockholm^[47][48]
• Philip Stott, professor emeritus of biogeography at the University of London^[49][50]
• Hendrik Tennekes, retired director of research, Royal Netherlands Meteorological Institute ^[51][52]
• Anastasios Tsonis, distinguished professor at the University of Wisconsin-Milwaukee^[53][54]
• Fritz Vahrenholt, German politician and energy executive with a doctorate in chemistry^[55][56]

Scientists arguing that global warming is primarily caused by natural processes

These scientists have said that the observed warming is more likely to be attributable to natural causes than to human activities. Their views on climate change are usually described in more detail in their biographical articles.

• Khabibullo Abdusamatov, astrophysicist at Pulkovo Observatory of the Russian Academy of Sciences^[58][59]
• Sallie Baliunas, astrophysicist, Harvard-Smithsonian Center for Astrophysics^[60][61][62]
• Timothy Ball, professor emeritus of geography at the University of Winnipeg^[63][64]
• Robert M. Carter, former head of the school of earth sciences at James Cook University^[65][66]
• Ian Clark, hydrogeologist, professor, Department of Earth Sciences, University of Ottawa^[67][68]
• Chris de Freitas, associate professor, School of Geography, Geology and Environmental Science, University of Auckland^[69][70]
• David Douglass, solid-state physicist, professor, Department of Physics and Astronomy, University of Rochester^[71][72]
• Don Easterbrook, emeritus professor of geology, Western Washington University^[73][74]
• William M. Gray, professor emeritus and head of the Tropical Meteorology Project, Department of Atmospheric Science, Colorado State University^[75][76]
• William Happer, physicist specializing in optics and spectroscopy, Princeton University^[77][78]
• Ole Humlum, professor of geology at the University of Oslo^[79][80]
• Wibjörn Karlén, professor emeritus of geography and geology at the University of Stockholm.^[81][82]
• William Kininmonth, meteorologist, former Australian delegate to World Meteorological Organization Commission for Climatology^[83][84]
• David Legates, associate professor of geography and director of the Center for Climatic Research, University of Delaware^[85][86]
• Anthony Lupo, professor of atmospheric science at the University of Missouri^[87][88]
• Tad Murty, oceanographer; adjunct professor, Departments of Civil Engineering and Earth Sciences, University of Ottawa^[89][90]
• Tim Patterson, paleoclimatologist and professor of geology at Carleton University in Canada.^[91][92][93]
• Ian Plimer, professor emeritus of mining geology, the University of Adelaide.^[94][95]
• Arthur B. Robinson, American politician, biochemist and former faculty member at the University of California, San Diego^[96][97]
• Murry Salby, atmospheric scientist, former professor at Macquarie University^[98][99]
• Nicola Scafetta, research scientist in the physics department at Duke University^{[100][101][102]}
• Tom Segalstad, geologist; associate professor at University of Oslo^[103][104]
• Nir Shaviv, professor of physics focusing on astrophysics and climate science at the Hebrew University of Jerusalem^[105][106]
• Fred Singer, professor emeritus of environmental sciences at the University of Virginia^{[107][108][109][110]}
• Willie Soon, astrophysicist, Harvard-Smithsonian Center for Astrophysics^[111][112]
• Roy Spencer, meteorologist; principal research scientist, University of Alabama in Huntsville^[113][114]
• Henrik Svensmark, physicist, Danish National Space Center^[115][116]
• George H. Taylor, retired director of the Oregon Climate Service at Oregon State University^[117][118]
• Jan Veizer, environmental geochemist, professor emeritus from University of Ottawa^[119][120]
• Les Woodcock, professor emeritus of chemical thermodynamics at the University of Manchester and former NASA scientist.^[121]

Scientists arguing that the cause of global warming is unknown

These scientists have said that no principal cause can be ascribed to the observed rising temperatures, whether man-made or natural.

• Syun-Ichi Akasofu, retired professor of geophysics and founding director of the International Arctic Research Center of the University of Alaska Fairbanks.^[122][123]
• Claude Allègre, French politician; geochemist, emeritus professor at Institute of Geophysics (Paris).^[124][125]
• Robert Balling, a professor of geography at Arizona State University.^[126][127]
• Pål Brekke, solar astrophycisist, senior advisor Norwegian Space Centre.^[128][129]
• John Christy, professor of atmospheric science and director of the Earth System Science Center at the University of Alabama in Huntsville, contributor to several IPCC reports.^{[130][131][132]}
• Petr Chylek, space and remote sensing sciences researcher, Los Alamos National Laboratory.^[133][134]
• David Deming, geology professor at the University of Oklahoma.^[135][136]
• Ivar Giaever, professor emeritus of physics at the Rensselaer Polytechnic Institute and a Nobel laureate.^[137][138]
• Vincent R. Gray, New Zealand physical chemist with expertise in coal ashes^[139][140]
• Keith E. Idso, botanist, former adjunct professor of biology at Maricopa County Community College District and the vice president of the Center for the Study of Carbon Dioxide and Global Change^[141][142]
• Antonino Zichichi, emeritus professor of nuclear physics at the University of Bologna and president of the World Federation of Scientists.^[143][144]

Scientists arguing that global warming will have few negative consequences

These scientists have said that projected rising temperatures will be of little impact or a net positive for society or the environment.

• Craig D. Idso, faculty researcher, Office of Climatology, Arizona State University and founder of the Center for the Study of Carbon Dioxide and Global Change ^[145][146]
• Sherwood B. Idso, former research physicist, USDA Water Conservation Laboratory, and adjunct professor, Arizona State University^[147][148]
• Patrick Michaels, senior fellow at the Cato Institute and retired research professor of environmental science at the University of Virginia^[149][150]

Dead scientists

This section includes deceased scientists who would otherwise be listed in the prior sections.

• August H. "Augie" Auer Jr. (1940–2007), retired New Zealand MetService Meteorologist and past professor of atmospheric science at the University of Wyoming^[151]
• Reid Bryson (1920–2008), Emeritus Professor of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, said in a 2007 magazine interview that he believed global warming was primarily caused by natural processes:^[152]
• Robert Jastrow (1925–2008) was an American astronomer, physicist and cosmologist. He was a leading NASA scientist. Together with Fred Seitz and William Nierenberg he established the George C. Marshall Institute^[152] to counter the scientists who were arguing against Reagan's Starwars Initiative, arguing for equal time in the media. This institute later took the view that tobacco was having no effect, that acid rain was not caused by human emissions, that ozone was not depleted by CFCs, that pesticides were not environmentally harmful and it was also critical of the consensus view of anthropogenic global warming.^[153] Jastrow acknowledged the Earth was experiencing a warming trend, but claimed that the cause was likely to be natural variation.^[154]
• Marcel Leroux (1938–2008) former Professor of Climatology, Université Jean Moulin^[155]
• Frederick Seitz (1911–2008), solid-state physicist and former president of the National Academy of Sciences and co-founder of the George C. Marshall Institute in 1984.^[152][156]

I also found this paper interesting:

Abstract

This paper examines the framings and identity work associated with professionals’ discursive construction of climate change science, their legitimation of themselves as experts on ‘the truth’, and their attitudes towards regulatory measures. Drawing from survey responses of 1077 professional engineers and geoscientists, we reconstruct their framings of the issue and knowledge claims to position themselves within their organizational and their professional institutions. In understanding the struggle over what constitutes and legitimizes expertise, we make apparent the heterogeneity of claims, legitimation strategies, and use of emotionality and metaphor. By linking notions of the science or science fiction of climate change to the assessment of the adequacy of global and local policies and of potential organizational responses, we contribute to the understanding of ‘defensive institutional work’ by professionals within petroleum companies, related industries, government regulators, and their professional association.