中国民航飞机LTO循环的污染物排放评估

Assessment of Pollutant Emissions from Civil Aircraft in China During the LTO Cycle

文章基于国际民航组织标准排放模型,细化了飞机LTO循环的运行阶段及不同阶段下推力设置变化的影响,同时利用机场跑道、年起降架次等信息修正了飞机的滑行时间,建立了2016年中国机场群飞机LTO循环的大气污染排放清单。结果表明,2016年中国民航飞机在LTO循环阶段产生的温室气体和污染物排放量分别为CO_(2)8082.7万t、NO_(x)33527.9 t、CO 31003.8 t、SO_(2)3901.9 t、HC 2819.5 t和PM 901.9 t。空间分布总体上呈南方高于北方的状态,其中华东和中南地区的排放量占主体。日排放量的最高值通常出现在07:00-08:00,而05:00-06:00则为最低值。在LTO循环中,86%的HC和CO来自滑进、滑出和保持等低推力模式,NO_(x)和PM则主要在爬升、初始爬升等高推力模式排放,分别占45%和64%。

The emission inventory of aircraft Landing and Take-off cycle(LTO)of the China Civil Aviation Airport aircraft for 2016 was established based on the refined operation stage and the effect of thrust setting by the International Civil Aviation Organization(ICAO)and the corrected aircraft taxiing time.The result showed that total annual emissions of CO_(2),NO_(x),CO,SO_(2),HC and PM were 80827 kilotons,33527.9 tons,31003.8 tons,3901.9 tons,2819.5 tons and 901.9 tons respectively.The spatial distribution was significantly higher in the south than in the north,with largest emissions in the east and south-cen⁃tral regions.The highest diurnal variation usually occurred from 07:00 to 08:00 a.m.and the lowest occurred from 05:00 to 06:00 a.m..About 86%of HC and CO were emitted during the low thrust modes including sliding in,sliding out and holding.Emissions of NO_(x)(45%)and PM(64%)were higher during the high thrust modes such as climbing and initial climbing.