Impact of aircraft emissions on reactive nitrogen over the North Atlantic Flight Corridor region ...

• Main Authors: Koike, M., Kondo, Y., Ikeda, H., Gregory, G. L., Anderson, B. E., Sachse, G. W., Blake, D. R., Liu, S. C., Singh, H. B., Thompson, Anne M., Kita, K., Zhao, Y., Sugita, T., Shetter, R. E., Toriyama, N.
• Format: Text
• Language: English
• Published: AGU 2000
• Subjects: North Atlantic
• Online Access: https://dx.doi.org/10.13016/m2hwna-jlpl; https://mdsoar.org/handle/11603/34940

The impact of aircraft emissions on reactive nitrogen in the upper troposphere (UT) and lowermost stratosphere (LS) was estimated using the NOy-O3 correlation obtained during the Subsonic Assessment (SASS) Ozone and Nitrogen Oxide Experiment (SONEX) carried out over the U.S. continent and North Atlantic Flight Corridor (NAFC) region in October and November 1997. To evaluate the large-scale impact, we made a reference NOy-O3 relationship in air masses, upon which aircraft emissions were considered to have little impact. For this purpose, the integrated input of NOx from aircraft into an air mass along a 10-day back trajectory (?NOy) was calculated based on the Abatement of Nuisance Caused by Air Traffic/European Commission (ANCAT/EC2) emission inventory. The excess NOy (dNOy) was calculated from the observed NOy and the reference NOy-O3 relationship. As a result, a weak positive correlation was found between the dNOy and ?NOy, and dNOy and NOx/NOy values, while no positive correlation between the dNOy and CO ...