Institute of Environmental Engineering (IfU), ETH Zürich, 8093, Zürich, Switzerland.
Laboratory for Advanced Analytical Technologies, Empa, 8600, Dübendorf, Switzerland.
Nat Commun. 2019 Feb 1;10(1):534. doi: 10.1038/s41467-019-08491-9.
With the rapidly growing global air traffic, the impacts of the black carbon (BC) in the aviation exhaust on climate, environment and public health are likely rising. The particle number and size distribution are crucial metrics for toxicological analysis and aerosol-cloud interactions. Here, a size-resolved BC particle number emission inventory was developed for the global civil aviation. The BC particle number emission is approximately (10.9 ± 2.1) × 10 per year with an average emission index of (6.06 ± 1.18) × 10 per kg of burned fuel, which is about 1.3% of the total ground anthropogenic emissions, and 3.6% of the road transport emission. The global aviation emitted BC particles follow a lognormal distribution with a geometric mean diameter (GMD) of 31.99 ± 0.8 nm and a geometric standard deviation (GSD) of 1.85 ± 0.016. The variabilities of GMDs and GSDs for all flights are about 4.8 and 0.08 nm, respectively. The inventory provides new data for assessing the aviation impacts.
随着全球航空交通的快速增长，航空废气中的黑碳 (BC) 对气候、环境和公众健康的影响可能正在上升。颗粒物数量和粒径分布是毒理学分析和气溶胶-云相互作用的关键指标。在这里，开发了一个用于全球民用航空的分粒径 BC 颗粒物数排放清单。BC 颗粒物数排放量约为 (10.9 ± 2.1) × 10 个/年，平均排放指数为 (6.06 ± 1.18) × 10 个/kg 燃烧燃料，约占地面人为排放总量的 1.3%，占道路交通排放的 3.6%。全球航空排放的 BC 颗粒物呈对数正态分布，几何平均直径 (GMD) 为 31.99 ± 0.8 nm，几何标准偏差 (GSD) 为 1.85 ± 0.016。所有航班的 GMD 和 GSD 的可变性分别约为 4.8 和 0.08 nm。该清单为评估航空影响提供了新的数据。
