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Impact of U.S. Oil and Natural Gas Emission Increases on Surface Ozone Is Most Pronounced in the Central United States
[Image: see text] Observations of volatile organic compounds (VOCs) from a surface sampling network and simulation results from the EMAC (ECHAM5/MESSy for Atmospheric Chemistry) model were analyzed to assess the impact of increased emissions of VOCs and nitrogen oxides from U.S. oil and natural gas...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7547866/ https://www.ncbi.nlm.nih.gov/pubmed/32902267 http://dx.doi.org/10.1021/acs.est.9b06983 |
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author | Pozzer, Andrea Schultz, Martin G. Helmig, Detlev |
author_facet | Pozzer, Andrea Schultz, Martin G. Helmig, Detlev |
author_sort | Pozzer, Andrea |
collection | PubMed |
description | [Image: see text] Observations of volatile organic compounds (VOCs) from a surface sampling network and simulation results from the EMAC (ECHAM5/MESSy for Atmospheric Chemistry) model were analyzed to assess the impact of increased emissions of VOCs and nitrogen oxides from U.S. oil and natural gas (O&NG) sources on air quality. In the first step, the VOC observations were used to optimize the magnitude and distribution of atmospheric ethane and higher-alkane VOC emissions in the model inventory for the base year 2009. Observation-based increases of the emissions of VOCs and NO(x) stemming from U.S. oil and natural gas (O&NG) sources during 2009–2014 were then added to the model, and a set of sensitivity runs was conducted for assessing the influence of the increased emissions on summer surface ozone levels. For the year 2014, the added O&NG emissions are predicted to affect surface ozone across a large geographical scale in the United States. These emissions are responsible for an increased number of days when the averaged 8-h ozone values exceed 70 ppb, with the highest sensitivity being in the central and midwestern United States, where most of the O&NG growth has occurred. These findings demonstrate that O&NG emissions significantly affect the air quality across most of the United States, can regionally offset reductions of ozone precursor emissions made in other sectors, and can have a determining influence on a region’s ability to meet National Ambient Air Quality Standard (NAAQS) obligations for ozone. |
format | Online Article Text |
id | pubmed-7547866 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-75478662020-10-13 Impact of U.S. Oil and Natural Gas Emission Increases on Surface Ozone Is Most Pronounced in the Central United States Pozzer, Andrea Schultz, Martin G. Helmig, Detlev Environ Sci Technol [Image: see text] Observations of volatile organic compounds (VOCs) from a surface sampling network and simulation results from the EMAC (ECHAM5/MESSy for Atmospheric Chemistry) model were analyzed to assess the impact of increased emissions of VOCs and nitrogen oxides from U.S. oil and natural gas (O&NG) sources on air quality. In the first step, the VOC observations were used to optimize the magnitude and distribution of atmospheric ethane and higher-alkane VOC emissions in the model inventory for the base year 2009. Observation-based increases of the emissions of VOCs and NO(x) stemming from U.S. oil and natural gas (O&NG) sources during 2009–2014 were then added to the model, and a set of sensitivity runs was conducted for assessing the influence of the increased emissions on summer surface ozone levels. For the year 2014, the added O&NG emissions are predicted to affect surface ozone across a large geographical scale in the United States. These emissions are responsible for an increased number of days when the averaged 8-h ozone values exceed 70 ppb, with the highest sensitivity being in the central and midwestern United States, where most of the O&NG growth has occurred. These findings demonstrate that O&NG emissions significantly affect the air quality across most of the United States, can regionally offset reductions of ozone precursor emissions made in other sectors, and can have a determining influence on a region’s ability to meet National Ambient Air Quality Standard (NAAQS) obligations for ozone. American Chemical Society 2020-09-09 2020-10-06 /pmc/articles/PMC7547866/ /pubmed/32902267 http://dx.doi.org/10.1021/acs.est.9b06983 Text en This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Pozzer, Andrea Schultz, Martin G. Helmig, Detlev Impact of U.S. Oil and Natural Gas Emission Increases on Surface Ozone Is Most Pronounced in the Central United States |
title | Impact
of U.S. Oil and Natural Gas Emission Increases
on Surface Ozone Is Most Pronounced in the Central United States |
title_full | Impact
of U.S. Oil and Natural Gas Emission Increases
on Surface Ozone Is Most Pronounced in the Central United States |
title_fullStr | Impact
of U.S. Oil and Natural Gas Emission Increases
on Surface Ozone Is Most Pronounced in the Central United States |
title_full_unstemmed | Impact
of U.S. Oil and Natural Gas Emission Increases
on Surface Ozone Is Most Pronounced in the Central United States |
title_short | Impact
of U.S. Oil and Natural Gas Emission Increases
on Surface Ozone Is Most Pronounced in the Central United States |
title_sort | impact
of u.s. oil and natural gas emission increases
on surface ozone is most pronounced in the central united states |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7547866/ https://www.ncbi.nlm.nih.gov/pubmed/32902267 http://dx.doi.org/10.1021/acs.est.9b06983 |
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