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 kg1 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).