Skip to main content

Review of the U.S. Climate Change Science Program's Draft Synthesis and Assessment Product 2.4 Trends in Emissions of Ozone Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure (2007) / Chapter Skim
Currently Skimming:

2 Overarching Comments
Pages 6-12

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 6...
... As detailed in the committee's major comments for Chapter 4 of the draft SAP (see Chapter 3 of this review) , the authoring team should include additional discussion of climate change scenarios, rather than just sticking to the single baseline Special Report on 6
Read the entire page →
From page 7...
... Perhaps the authoring team could select one of the interactive 2D models from the assessment, benchmark it against the better CCMs, and then use the results from the full range of scenarios to include additional discussion of climate change scenarios. The authoring team should also explicitly state that they are not considering how drastic changes that might take place in the climate system might affect the ozone problem.
Read the entire page →
From page 8...
... Considering past contributions, the United States was a major consumer of fluorochemicals prior to 1985. Although the lack of available data presents significant uncertainty, it is reasonable to estimate that the U.S.
Read the entire page →
From page 9...
... emissions with 1985 and beyond using EPA vintaging 20% error bars starting from each of model minus 20%; from the upper the two points defined by the bound, continued to 1985 and beyond scenarios described above using EPA vintaging model plus 20% The text should clearly describe the rationale outlined above, stating that this approach is used because no data currently exists to better define U.S. contributions and commenting that this is only a rough estimate based on plausible scenarios.
Read the entire page →
From page 10...
... have made to the world's understanding of the ozone layer. To identify research needs that are evident from our current understanding, some suggestions are as follows: • Continued observations to monitor ozone recovery and to allow an attribution of the separate effects of decreasing halogens and of climate change.
Read the entire page →
From page 11...
... • Banks of ODSs: the potential for destruction of quantities of ODSs contained in equipment and products to enhance ozone protection and decrease contributions to climate change. • Expanding uses of methyl bromide as in quarantine and pre-shipment, and continued controversy over critical use exemptions of methyl bromide.
Read the entire page →
From page 12...
... Washington, DC: U.S. Climate Change Science Program.
Read the entire page →

Key Terms

  • authoring team
  • global emissions
  • overarching comments
  • radiative forcing
  • epa vintaging

  • vintaging model
  • change science
  • using epa
  • ozone layer
  • emissions prior

  • key findings
  • meteorological organization
  • total global
  • stratospheric ozone
  • change scenarios

  • assume epa
  • beyond using
  • beyond assume
  • upper bounds
  • include additional

  • model plus
  • model estimates
  • policy implications
  • major comments
  • ultraviolet radiation

  • single baseline
  • world meteorological
  • additional discussion
  • radiation exposure
  • proposed approach


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.