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Several surveys have been conducted of the opinions of scientists on anthropogenic climate change. They have generally concluded that the majority of scientists believe that human activity is contributing to global warming. == 1990s == * Global Environmental Change Report, 1990: GECR climate survey shows strong agreement on action, less so on warming. Global Environmental Change Report 2, No. 9, pp. 1–3 * In 1991, the Center for Science, Technology, and Media conducted a survey of 118 scientists regarding views on the climate change.〔(T. R. Stewart, J. L. Mumpower, P. Reagan-Cirincione, "Scientists' Agreement and Disagreement about Global Climate Change: Evidence from Surveys", 15. )〕 Analysis by the authors of the respondents projections of warming and agreement with statements about warming resulted in them categorizing response in 3 "clusters": 13 (15%) expressing skepticism of the 1990 IPCC estimate, 39 (44%) expressing uncertainty with the IPCC estimate, and 37 (42%) agreeing with the IPCC estimate. * Stewart, T. R.,〔(Albandy.edu )〕 Mumpower, J. L., and Reagan-Cirincione, P. (1992). Scientists' opinions about global climate change: Summary of the results of a survey. NAEP (National Association of Environmental Professionals) Newsletter, 17(2), 6-7. * A Gallup poll of 400 members of the American Geophysical Union and the American Meteorological Society along with an analysis of reporting on global warming by the Center for Media and Public Affairs, a report on which was issued in 1992. Accounts of the results of that survey differ in their interpretation and even in the basic statistical percentages: * * Fairness and Accuracy in Reporting states that the report said that 67% of the scientists said that human-induced global warming was occurring, with 11% disagreeing and the rest undecided.〔(R. Nixon, "Limbaughesque Science" ), citing a press release by Gallup in the ''San Francisco Chronicle'', 9/27/92.〕 * * George Will reported "53 percent do not believe warming has occurred, and another 30 percent are uncertain." (''Washington Post'', September 3, 1992). In a correction Gallup stated: "Most scientists involved in research in this area believe that human-induced global warming is occurring now."〔(Steve Rendall, "The Hypocrisy of George Will" ), FAIR report, citing the ''San Francisco Chronicle'', 9/27/92.〕 * In 1996, Dennis Bray and Hans von Storch undertook a survey of climate scientists on attitudes towards global warming and related matters. The results were subsequently published in the Bulletin of the American Meteorological Society. The paper addressed the views of climate scientists, with a response rate of 40% from a mail survey questionnaire to 1000 scientists in Germany, the USA and Canada. Most of the scientists believed that global warming was occurring and appropriate policy action should be taken, but there was wide disagreement about the likely effects on society and almost all agreed that the predictive ability of currently existing models was limited. On a scale of 1 (highest confidence) to 7 (lowest confidence) regarding belief in the ability to make "reasonable predictions" the mean was 4.8 and 5.2 for 10- and 100-year predictions, respectively. On the question of whether global warming is occurring or will occur, the mean response was 3.3, and for future prospects of warming the mean was 2.6. * In 1997, the conservative think tank Citizens for a Sound Economy surveyed America's 48 state climatologists on questions related to climate change.〔(Citizens For a Sound Economy Foundation )〕 Of the 36 respondents, 44% considered global warming to be a largely natural phenomenon, compared to 17% who considered warming to be largely man-made. 89% agreed that "current science is unable to isolate and measure variations in global temperatures caused ONLY by man-made factors," and 61% said that historical data do not indicate "that fluctuations in global temperatures are attributable to human influences such as burning fossil fuels", though the time scale for the next glacial period was not specified. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Surveys of scientists' views on climate change」の詳細全文を読む スポンサード リンク
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