Only one study was found on the AtJ pathway, with Norwegian wood residuals as feedstock, yielding a 66% reduction, with the majority of emissions (excluding combustion) attributed to processing (Avinor, 2013). For bioethanol, several well-to-gate GHG estimates exist, and the emission categories included in such studies are comparable to the emissions for a full AtJ pathway (excluding the processing step from bioethanol to jet fuel). Three of such estimates have been included in the table to serve as proxies for the emissions of an AtJ pathway.