71. The following charts provide a year-by-year comparison between Dr. Sumner’s reported impacts and estimates prepared by the United States. The formulas use to generate these estimates follow the documentation provided by Dr. Sumner. In cases where the information was incomplete, reasonable assumptions were made to facilitate the calculations. Complete details are provided in the file FINAL US2003CropsModel Correl 1370.
72. Estimates by the United States for the 1999-2002 period are reasonably close to those offered by Dr. Sumner. However, there are large discrepancies over the 2003-07 period. It is inexplicable how the impact between the two periods can be so different. The differences cannot be explained by Dr. Sumner’s method of incorporating alternative “coupling” factors.
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