2.3. Functional unit
The functional unit, which all inputs and outputs of analysis are
related to in order to allow emissions estimation for sugar
production is defined as kg CO2e kg 1 sugar. The greenhouse gases
under consideration are carbon dioxide (CO2), methane (CH4),
nitrous oxide (N2O). Each gas is converted into a CO2 equivalent
value using global warming from the latest IPCC 100-year time
horizon GWP equivalent factors (CO2, CH4, and N2O having GWP of
1, 25 and 298, respectively, IPCC, 2007