“…In their study of China's carbon emissions from aviation, Han et al [11] evidenced the positive effects of air transportation revenue and the aviation route structure on emissions, whereas the air transportation intensity and aviation energy intensity were found to inhibit aviation carbon emissions. Similarly, He et al [12] evidenced that energy consumption per unit of turnover restrained global carbon emissions growth by about 8%. On the other hand, they evidenced that population size, GDP per capita, and turnover per unit of GDP contributed to the growth in carbon emissions from global civil aviation, by 5%, 82%, and 21%, respectively.…”