Prospective life cycle assessment of future Swedish hydrogen-powered aviation pathways
通过前瞻性生命周期评估，比较瑞典六种未来航空路径（包括氢动力、电制煤油和化石煤油）的环境影响，发现氢动力虽降低全球变暖潜力，但增加毒性和土地利用等影响，并指出其依赖其他行业。
Hydrogen-powered aviation is promoted as a low-carbon alternative for future long-distance air travel, but its broader environmental impacts remain unclear. This study evaluates the potential environmental impacts of six future air travel pathways in Sweden, including e-kerosene, liquid hydrogen, and fossil kerosene, using prospective life cycle assessment. Results show that hydrogen-powered aviation has lower global warming potential than fossil kerosene but higher impacts on other environmental issues, such as toxicity and land use. Key hotspots include resources in energy infrastructure and energy use in fuel production and airport operations, however, resource substitutions and energy efficiency improvements have limits. This study highlights the potential environmental benefits and tradeoffs of hydrogen-powered aviation, and also the dependency of aviation on other sectors. Further research should integrate technological innovations in long-distance air travel pathways with scenarios that account for demand-side measures, as well as regulatory, political, and economic barriers.