DISCUSSION

The following issues were raised in the discussion:

  • interactions between mitigation and adaptation in agriculture (e.g., holding more carbon in the soil leads to better water retention, which increases productivity and diversifies sources of income);

  • a need for serious thought to very different worlds with the same radiative forcing, such as one with the entire biosphere managed for biofuels, food, etc., and one in which biosphere performs more traditional ecological roles;

  • the importance of the difficult-to-monetize quantities;

  • large expenditures on cultivars in Africa without investments on agricultural extension to implement them;

  • the need to construct adaptation scenarios in a multisector context (e.g., Can goals for technologically driven increases in crop yields be reached given expected changes in climate and flood regimes?); and

  • the need to increase sophistication of scenarios related to adaptation to match the sophistication of scenarios leading to mitigation.

The end of the afternoon was devoted to breakout discussions focused on long-term scenarios for adaptation and mitigation that could be used by the IPCC, the U.S. National Assessment, and other analyses.



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