Model calculations of the impact of NOₓ from air traffic, lightning, and surface emissions, compared with measurements
Loading...
Collections
Author/Creator ORCID
Date
2000-02-01
Type of Work
Department
Program
Citation of Original Publication
Meijer, E. W., P. F. J. van Velthoven, A. M. Thompson, L. Pfister, H. Schlager, P. Schulte, and H. Kelder. “Model Calculations of the Impact of NOₓ from Air Traffic, Lightning, and Surface Emissions, Compared with Measurements.” Journal of Geophysical Research: Atmospheres 105, no. D3 (2000): 3833–50. https://doi.org/10.1029/1999JD901052.
Rights
This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain
Public Domain
Subjects
Abstract
The impact of NOₓ from aircraft emissions, lightning, and surface contributions on atmospheric nitrogen oxides and ozone in the North Atlantic flight corridor has been investigated with the three-dimensional global chemistry transport model TM3 by partitioning the nitrogen oxides and ozone according to source category. The results have been compared with Pollution from Aircraft Emissions in the North Atlantic flight corridor (POLINAT 2) and Subsonic Assessment Ozone and Nitrogen Oxide Experiment (SONEX) airborne measurements in the North Atlantic flight corridor in 1997. Various cases have been investigated: measurements during a stagnant anticyclone and an almost cutoff low, both with expected high aircraft contributions, a southward bound flight with an expected strong flight corridor gradient and lightning contributions in the south, and a transatlantic flight with expected boundary layer pollution near the U.S. coast. The agreement between modeled results and measurements is reasonably good for NO and ozone. Also, the calculated impact of the three defined sources was consistent with the estimated exposure of the sampled air to these sources, obtained by specialized back trajectory model products. Model calculations indicate that aircraft contributes 55% to the mean NOₓ concentration and 10% to the O3 concentration in the North Atlantic flight corridor in October 1997, whereas lightning and surface emissions add 15% and 25% to the NOₓ concentration and 20% and 30% to the O3 concentration.