Emissions Sector

Reference Approach vs Sectoral Approach

The Reference Approach and the Sectoral Approach often give different results because the Reference Approach is a top-down approach using a country's energy supply data and has no detailed information on how the individual fuels are used in each sector. The Reference Approach provides estimates of CO2 to compare with estimates derived using a Sectoral Approach. Theoretically, it indicates an upper bound to the Sectoral Approach 1A fuel combustion, because some of the carbon in the fuel is not...