Scientists’ Views about Attribution of Global Warming
Bart Verheggen *†‡, Bart Strengers †, John Cook §∥, Rob van Dorland ⊥, Kees Vringer †, Jeroen Peters †, Hans Visser †, and Leo Meyer †
† PBL Netherlands Environmental Assessment Agency, PO Box 303, 3720 AH Bilthoven, The Netherlands
‡ Energy Research Centre of The Netherlands ECN, PO Box 1, 1755 ZG Petten, The Netherlands
§ University of Queensland, 4072 Brisbane QLD 4072, Australia
∥ University of Western Australia, Crawley Washington 6009, Australia
⊥ Royal Netherlands Meteorological Institute (KNMI), PO Box 201, 3730 AE De Bilt, The Netherlands
Environ. Sci. Technol., 2014, 48 (16), pp 8963–8971
DOI: 10.1021/es501998e
Publication Date (Web): July 22, 2014
Copyright © 2014 American Chemical Society
*Phone: +31 20 525 8271; e-mail:
Verheggen.Bart@gmail.com.
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http://pubs.acs.org/doi/abs/10.1021/es501998e
Results are presented from a survey held among 1868 scientists studying various aspects of climate change, including physical climate, climate impacts, and mitigation. The survey was unique in its size, broadness and level of detail. Consistent with other research, we found that, as the level of expertise in climate science grew, so too did the level of agreement on anthropogenic causation. 90% of respondents with more than 10 climate-related peer-reviewed publications (about half of all respondents), explicitly agreed with anthropogenic greenhouse gases (GHGs) being the dominant driver of recent global warming. The respondents’ quantitative estimate of the GHG contribution appeared to strongly depend on their judgment or knowledge of the cooling effect of aerosols. The phrasing of the IPCC attribution statement in its fourth assessment report (AR4)—providing a lower limit for the isolated GHG contribution—may have led to an underestimation of the GHG influence on recent warming. The phrasing was improved in AR5. We also report on the respondents’ views on other factors contributing to global warming; of these Land Use and Land Cover Change (LULCC) was considered the most important. Respondents who characterized human influence on climate as insignificant, reported having had the most frequent media coverage regarding their views on climate change.
GO SEE MY POST #622 The 97% consensus of climate scientists is only 47%
I LIKE THIS PIE CHART THAT POSTED
http://joannenova.com.au/2015/07/le...-scientists-agree-with-the-ipcc-95-certainty/
SINCE YOU LIKE PEER REVIEW PAPER GO TO PAGE 9 AND LOOK AT THE FIGURE Figure 1b Responses to Question 1b.
http://www.pbl.nl/sites/default/file...nses_01731.pdf