Ozone and climate: scientific consensus and leadership

Reiner Grundmann*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This article compares the cases of ozone layer protection and climate change. In both cases, scientific expertise has played a comparatively important role in the policy process. The author argues that against conventional assumptions, scientific consensus is not necessary to achieve ambitious political goals. However, the architects of the Intergovernmental Panel on Climate Change operated under such assumptions. The author argues that this is problematic both from a theoretical viewpoint and from empirical evidence. Contrary to conventional assumptions, ambitious political regulations in the ozone case were agreed under scientific uncertainty, whereas the negotiations on climate change were much more modest albeit based on a large scientific consensus. On the basis of a media analysis, the author shows that the creation of a climate of expectation plus pressure from leader countries is crucial for success. © 2006 Sage Publication.

Original languageEnglish
Pages (from-to)73-101
Number of pages29
JournalScience Technology and Human Values
Issue number1
Publication statusPublished - 1 Jan 2006


  • climate change
  • global environmental problems
  • leadership
  • ozone layer
  • uncertainty


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