全球気候モデルを用いた水素航空機の巡航高度が飛行機雲の放射強制力に及ぼす影響に関する研究

抄録

In recent years, carbon neutrality has been declared in the aviation sector. As one of the greenhouse effects of aircraft exhaust gas, persistent contrail and contrail cirrus formation lead to the positive radiative forcing. As an alternative to fossil fuels, hydrogen has been focused on, while hydrogen-fueled aircraft also harm the environment due to its NOx emissions and contrails. In the present study, the effect of cruise altitude on the radiative forcing of contrails formed by emissions of hydrogen-fueled aircraft was investigated using a global climate model. Two cases, base case and lowered case, were selected to investigate the influences. For the base case, the cruise altitude for each flight was determined to minimize the fuel consumption, and for the lowered case, the cruise altitude was lowered 2000 ft from that of the base case for every flight. The simulation results for both cases will be presented at the conference.