Historical Cumulative Emissions Scaled Based on Per Capita EmissionsThis intermediate option combines historical cumulative emissions and historical per capita emissions, using an adjustment based on whether the country’s cumulative per capita emissions are below or above the world average cumulative per capita emissions. The result is that the farther a country is from the average world per capita emissions, the more their share will be impacted either up (if per capita emissions are high) or down (if per capita emissions are low). Again, users can select 1850, 1990, or 1850/1990 (an average of the two) as the starting point for historical cumulative emissions.