Influence of transported anthropogenic pollution on regional tropospheric ozone using NOAA aircraft measurements
Bahaveolos, C., Petropavlovskikh, I., Effertz, P., Duda, J., Mickelson, S., et al. (2021). Influence of transported anthropogenic pollution on regional tropospheric ozone using NOAA aircraft measurements. , doi:https://doi.org/10.5065/re5m-kj89
| Title | Influence of transported anthropogenic pollution on regional tropospheric ozone using NOAA aircraft measurements |
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| Genre | Manuscript |
| Author(s) | Cristina Bahaveolos, I. Petropavlovskikh, P. Effertz, J. Duda, Sheri Mickelson, Matthew Paulus |
| Abstract | Anthropogenic pollution can travel long distances through the troposphere to impact the air quality of communities, regions, and countries downwind of emissions sources. In this study, carbon monoxide (CO)— a tracer of anthropogenic emissions—is used to quantify the influence of transported anthropogenic pollution on regional tropospheric ozone (O3)—a predominant secondary pollutant. Both O3 and CO data were sourced from two offshore NOAA aircraft sampling sites (NHA = 42.95°N, 70.63°W, CMA = 38.83°N, 74.32°W) located in the northeast United States downwind of a megalopolis, from 2006 through 2016. Differentiation between the sampling of fresh pollution plumes and atmospherically aged air masses was detected and removed from analysis using threshold CO/CO2 ratios. An ordinary least squares method analysis was conducted within altitude layers (lower = 0–3 kmasl, middle = 3–6 kmasl, upper = 6–8 kmasl) for summer and winter. Tropospheric O3 and CO were found to be weakly correlated (r2 < 0.2) within all altitude layers and seasons at both sites; except for the upper troposphere during winter at the CMA site (r2 = 0.72). This did not align with the results of previous studies for this region. The low correlations can be attributed to multiple inverse relationships between O3 and CO. Quantification of the tropospheric O3-CO relationship in the northeast United States using NOAA aircraft data requires additional analyses to detect and isolate the sources of these inverse relationships; such as fresh anthropogenic pollution plumes and stratospheric intrusion events. |
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| Publication Date | Aug 1, 2021 |
| Publisher's Version of Record | https://doi.org/10.5065/re5m-kj89 |
| OpenSky Citable URL | https://n2t.org/ark:/85065/d7sj1q70 |
| OpenSky Listing | View on OpenSky |
| CISL Affiliations | TDD, ASAP |