美国的航班污染率比全球平均水平高14%;提高效率可以降低50%的航空排放。 U.S. flights are 14% more polluting than global average; efficiency improvements could cut aviation emissions 50%.

一项新的研究发现,全球航空排放量可以通过提高飞行效率,如取消保费座席、使用较新的飞机和增加座位占用率,在不减少航空旅行的情况下,最多削减50%。 A new study finds global aviation emissions could be cut by up to 50% without reducing air travel by improving flight efficiency, such as eliminating premium seating, using newer aircraft, and increasing seat occupancy. 研究人员分析了35亿次航班,发现美国航班的污染率比全球平均水平高14%,原因是机队老化、拥堵和载荷系数低。 Researchers analyzed 3.5 billion flights and found U.S. flights are 14% more polluting than the global average due to older fleets, congestion, and low load factors. 研究认为,仅仅依靠目前占喷气式燃料不到1%的可持续航空燃料,不足以实现净零目标。 The study argues that relying solely on sustainable aviation fuel, which currently makes up less than 1% of jet fuel, is insufficient for meeting net-zero goals. 相反,立即改变运作方式,如逐步淘汰污染最严重的飞机和进行更充分的飞行,可以大幅度减少排放量。 Instead, immediate operational changes like phasing out the most polluting planes and running fuller flights could deliver significant emissions reductions.