Table 3 Climate Change Effects and the Value of Extensive Margin Adaptation
 Eastern Composite (Annual Climate)Western Composite (Annual Climate)Eastern Composite (Seasonal Climate)
 CountiesAcres% Share of AcresMean ImpactCountiesAcres% Share of AcresMean ImpactCountiesAcres% Share of AcresMean Impact
Significant positive impact1,737324.571.49.17403.912.16.101,876355.478.217.03
Significant negative impact15448.310.6−7.3300
Impact not significantly diff. from zero29081.818.022228.287.9305137.730.3
Significant positive adaptation value1,568307.367.66.34*402.99.010.89*1,616316.969.716.21*
  • Note: Confidence intervals based on 5,000 Krinsky-Robb draws. Acres measured in millions. Mean impact is the acreage weighted climate change effect measured in annualized dollars per acre.

  • * Mean impact in the last row is mean adaptation value in the counties where adaptation value is positive and significant.