Integrated emission inventory and verification of China’s civil aviation airports

MA Zi-ang; ZHANG Zheng; XU Xin; BO Xin

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China Environmental Science ›› 2026, Vol. 46 ›› Issue (1) : 101-108.

Air Pollution Control

Integrated emission inventory and verification of China’s civil aviation airports

MA Zi-ang, ZHANG Zheng, XU Xin, BO Xin

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Abstract

Based on the International Civil Aviation Organization (ICAO) standard emission model, combined with statistical data from the Civil Aviation Administration of China (CAAC), an updated 2023~2024 air pollutant and carbon fusion emission inventory for the landing and take-off (LTO) cycles of civil aviation airports in mainland China was constructed, and the accuracy of the emission inventory was verified using the CHAP dataset. The results showed that in 2023, NO_x, CO, HC, SO₂, PM, and CO₂ emissions from LTO cycles at Chinese civil aviation airports were 1.277×10⁵, 1.010×10⁵, 0.084×10⁵, 0.037×10⁵, 0.010×10⁵, and 176.739×10⁵t, respectively. In 2024, the corresponding emissions were 1.353×10⁵, 1.070×10⁵, 0.089×10⁵, 0.039×10⁵, 0.010×10⁵, and 187.189×10⁵t, with a total LTO phase emission increase of 5.91% compared to 2023. The spatial and temporal characteristics of emissions in 2023 and 2024 indicated that economically developed eastern regions (such as Beijing, Shanghai, and Guangzhou) had CO₂ emissions accounting for more than 26% of the national total due to dense flight operations, whereas emissions were lower in western regions due to the limited number of regional airports. Empirical models showed a strong correlation between NO_x emissions and CHAP concentration data (r=0.50), validating the reliability of the inventory.

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civil aviation airports / carbon dioxide / integrated emission inventory / landing and take-off (LTO) cycles

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MA Zi-ang, ZHANG Zheng, XU Xin, BO Xin. Integrated emission inventory and verification of China’s civil aviation airports[J]. China Environmental Science. 2026, 46(1): 101-108

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