One of the committee’s tasks is to determine whether SAP 2.4 is effectively presented to its intended audiences. Keeping in mind the intended audiences described in the prospectus, the draft SAP does not provide enough introductory information in each chapter for the key points to be understood by a non-technical audience. One suggestion is to include WMO’s 20 questions document (Fahey 2007) as an appendix in the SAP, since it is written for a broad audience. The authoring team should include pedagogical introductory information and contextual language for the key issues and key findings. Chapter 3 (Review of Individual Sections) of this review provides additional suggestions for introducing essential concepts in each chapter of the draft SAP. As a matter of organization, it is difficult for the reader to correlate the key issues and key findings at the beginning of each SAP chapter to the associated discussions within the chapters. The authoring team should establish a clearer relationship among the key issues, key findings, and associated discussion for each topic.


CCSP (U.S. Climate Change Science Program). 2007. CCSP Synthesis and Assessment Product 2.4: Prospectus for Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure. Washington, DC: U.S. Climate Change Science Program. Available online:

Fahey, D.W. 2007. Twenty Questions and Answers about the Ozone Layer: 2006 Update. Geneva: World Meteorological Organization. Available online:

IPCC/TEAP (Intergovernmental Panel on Climate Change/Montreal Protocol’s Technology and Economic Assessment Panel). 2005. Safeguarding the Ozone Layer and the Global Climate System: Issues Related to Hydrofluorocarbons and Perfluorocarbons. IPCC/TEAP Special Report. Geneva: IPCC. Available online:

IPCC (Intergovernmental Panel on Climate Change). 2007. Climate Change 2007 - The Physical Science Basis: Working Group I Contribution to the Fourth Assessment Report of the IPCC. Cambridge: Cambridge University Press.

Molina, M.J., and F.S. Rowland. 1974. Stratospheric sink for chlorofluoromethanes: chlorine atomc-atalysed destruction of ozone. Nature 249:810–812.

WMO (World Meteorological Organization). 2007. Scientific Assessment of Ozone Depletion: 2006. Available online:

The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement