CO2, NOx, and Particle Emissions from Aircraft and Support Activities at a Regional Airport
2012
Klapmeyer, Michael E. | Marr, Linsey C.
The goal of this research was to quantify emissions of carbon dioxide (CO₂), nitrogen oxides (NOₓ), particle number, and black carbon (BC) from in-use aircraft and related activity at a regional airport. Pollutant concentrations were measured adjacent to the airfield and passenger terminal at the Roanoke Regional Airport in Virginia. Observed NOₓ emission indices (EIs) for jet-powered, commuter aircraft were generally lower than those contained in the International Civil Aviation Organization databank for both taxi (same as idle) and takeoff engine settings. NOₓ EIs ranged from 1.9 to 3.7 g (kg fuel)⁻¹ across five types of aircraft during taxiing, whereas EIs were consistently higher, 8.8–20.6 g (kg fuel)⁻¹, during takeoff. Particle number EIs ranged from 1.4 × 10¹⁶ to 7.1 × 10¹⁶ (kg fuel)⁻¹ and were slightly higher in taxi mode than in takeoff mode for four of the five types of aircraft. Diurnal patterns in CO₂ and NOₓ concentrations were influenced mainly by atmospheric conditions, while patterns in particle number concentrations were attributable mainly to patterns in aircraft activity. CO₂ and NOₓ fluxes measured by eddy covariance were higher at the terminal than at the airfield and were lower than found in urban areas.
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