| Title | The Impact of NOx Emissions From Lightning on the Production of Aviation-Induced Ozone |
|---|---|
| Record ID | 81745 |
| Personal Name Creator |
Khodayaria, Arezoo; Vitt, Francis; Phoenix, Daniel; Wuebbles, Donald J. |
| Corporate Creator | United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment; University of Illinois at Urbana-Champaign |
| Corporate Contributor |
United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy |
| Publisher | Elsevier |
| Publication Date | 20180500 |
| Language | English |
| Abstract | Due to the non-linear nature of ozone production in the troposphere, ozone production as a function of aviation nitrogen oxide (NOx = NO + NO2) emissions varies based on the background NOx levels. Of the several different sources of background NOx in the atmosphere, NOx from lightning (LNOx) contributes a substantial amount of NOx to the upper troposphere and has an effect on the ozone production efficiency, even though the LNOx source still has significant uncertainty. In this study, CAM5, the atmospheric component of the Community Earth System Model (CESM), was used to study the effect of uncertainties in NOx emissions from lightning on the production of aviation-induced ozone. Three sensitivity studies were analyzed with varying LNOx values of 3.7, 5, and 7.4 TgN/yr, representing the best current range estimates for LNOx. Results show a decrease in the aviation-induced ozone production rate and radiative forcing (RF) as LNOx increases. This is tied to the decreased ozone production under NOx saturated conditions. The ozone production per unit of NOx emission from lightning ranges from 2.38 TgO3/TgN for the case with 3.7 TgN from lightning to 0.97 TgO3/TgN for the case with 7.4 TgN from lightning. Similarly, the O3 RF decreases from 43.9 mW/m2 for the 3.7 TgN/yr case to 34.3 mW/m2 for 7.4 TgN/yr case. Understanding the current sensitivity of aviation-induced ozone production to the LNOx strength is important for reducing the uncertainty in ozone production from aviation NOx emissions. |
| Public Note | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/). |
| Rosap ID | dot:56980 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/56980 |
| TRT Terms | Ozone; Aviation; Lightning; Emissions testing; Evaporative emissions |
| General Subjects | Aviation-induced ozone; lightning NOx; PARTNER; ASCENT |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
1780704 |
| Contract Number | 13-C-AJFE-UI- |
| Report Number | j.atmosenv.2018.05.057 |
| Resource type | Manuscript |
| URL | https://ntlrepository.blob.core.windows.net/lib/81000/81700/81745/22-j.atmosenv.2018.05.057_pub_impact_of_NOx.pdf |
| Format | |
| Database | NTL Digital Repository |