because these paragraphs are to a large extent redundant with the discussion that begins on line 1599.

  • Line 1642: The material beginning here and through line 1655 should be removed because it addresses non-tropical cyclone convection over the oceans. While this connection may be real, it is too speculative for inclusion here.

  • Line 1694: The authors probably mean accumulated rainfall at a locality in the storm’s path. Radar meteorologists use the term “total storm-lifetime precipitation,” but for broad readership it implies a Lagrangian (not Eulerian) concept.

  • Line 1702: A citation to personal communication may be problematic, given the requirements of the prospectus.

  • Line 1725: Subsection 3.3.3.5 is well-written but the scientific support for it is perhaps the weakest subsections of 3.3.3. This committee suggests that this subsection in particular should be greatly condensed.

CHAPTER 4
Recommendations for Improving Our Understanding

The committee generally concurs with the recommendations of the authors but offers several specific comments to sharpen their impact. From a formatting perspective, the committee recommends that the authors consolidate all recommendations scattered among the chapters into Chapter 4. Stylistically, using both bold face and italics for the entire text of a recommendation statement dilutes its impact. Each numbered recommendation statement (e.g., line 115) should begin with a concise, high-impact sentence (in bold) followed by supporting (plain) text. Each of these first sentences should appear verbatim in the Executive Summary.


The committee noted that although the draft document devotes a considerable amount of space to tropical cyclone issues, there are no recommendations regarding this topic. Notwithstanding the recommendation to reduce the amount of discussion within the chapters, the committee suggests that the authors add a recommendation to support research that seeks to improve our understanding of what governs hurricane intensity. Current theory (e.g., the Maximum Potential Intensity) does not adequately explain the correlation between higher sea-surface temperature and hurricane intensity. The mechanisms that govern intensity must be understood better in order to understand better the potential impacts of a warming world on hurricane intensity.



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