The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions
Aviation-attributed climate impact depends on a combination of composition changes in trace gases due to emissions of carbon dioxide (CO2) and non-CO2 species. Nitrogen oxides (NOx = NO + NO2) emissions induce an increase in ozone (O3) and a depletion of methane (CH4), leading to a climate warming a...
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ftfzjuelichnvdb:oai:juser.fz-juelich.de:891839 2023-05-15T17:36:34+02:00 The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions Rosanka, Simon Frömming, Christine Grewe, Volker DE 2020 https://juser.fz-juelich.de/record/891839 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-01762%22 eng eng EGU info:eu-repo/semantics/altIdentifier/wos/WOS:000583032000004 info:eu-repo/semantics/altIdentifier/hdl/2128/27624 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/issn/1680-7324 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-20-12347-2020 https://juser.fz-juelich.de/record/891839 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-01762%22 info:eu-repo/semantics/openAccess Atmospheric chemistry and physics 20(20), 12347 - 12361 (2020). doi:10.5194/acp-20-12347-2020 info:eu-repo/classification/ddc/550 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2020 ftfzjuelichnvdb https://doi.org/10.5194/acp-20-12347-2020 2022-07-14T11:22:07Z Aviation-attributed climate impact depends on a combination of composition changes in trace gases due to emissions of carbon dioxide (CO2) and non-CO2 species. Nitrogen oxides (NOx = NO + NO2) emissions induce an increase in ozone (O3) and a depletion of methane (CH4), leading to a climate warming and a cooling, respectively. In contrast to CO2, non-CO2 contributions to the atmospheric composition are short lived and are thus characterised by a high spatial and temporal variability. In this study, we investigate the influence of weather patterns and their related transport processes on composition changes caused by aviation-attributed NOx emissions. This is achieved by using the atmospheric chemistry model EMAC (ECHAM/MESSy). Representative weather situations were simulated in which unit NOx emissions are initialised in specific air parcels at typical flight altitudes over the North Atlantic flight sector. By explicitly calculating contributions to the O3 and CH4 concentrations induced by these emissions, interactions between trace gas composition changes and weather conditions along the trajectory of each air parcel are investigated. Previous studies showed a clear correlation between the prevailing weather situation at the time when the NOx emission occurs and the climate impact of the NOx emission. Here, we show that the aviation NOx contribution to ozone is characterised by the time and magnitude of its maximum and demonstrate that a high O3 maximum is only possible if the maximum occurs early after the emission. Early maxima occur only if the air parcel, in which the NOx emission occurred, is transported to lower altitudes, where the chemical activity is high. This downward transport is caused by subsidence in high-pressure systems. A high ozone magnitude only occurs if the air parcel is transported downward into a region in which the ozone production is efficient. This efficiency is limited by atmospheric NOx and HOx concentrations during summer and winter, respectively. We show that a large CH4 depletion ... Article in Journal/Newspaper North Atlantic Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) Atmospheric Chemistry and Physics 20 20 12347 12361 |
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Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
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info:eu-repo/classification/ddc/550 Rosanka, Simon Frömming, Christine Grewe, Volker The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions |
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info:eu-repo/classification/ddc/550 |
description |
Aviation-attributed climate impact depends on a combination of composition changes in trace gases due to emissions of carbon dioxide (CO2) and non-CO2 species. Nitrogen oxides (NOx = NO + NO2) emissions induce an increase in ozone (O3) and a depletion of methane (CH4), leading to a climate warming and a cooling, respectively. In contrast to CO2, non-CO2 contributions to the atmospheric composition are short lived and are thus characterised by a high spatial and temporal variability. In this study, we investigate the influence of weather patterns and their related transport processes on composition changes caused by aviation-attributed NOx emissions. This is achieved by using the atmospheric chemistry model EMAC (ECHAM/MESSy). Representative weather situations were simulated in which unit NOx emissions are initialised in specific air parcels at typical flight altitudes over the North Atlantic flight sector. By explicitly calculating contributions to the O3 and CH4 concentrations induced by these emissions, interactions between trace gas composition changes and weather conditions along the trajectory of each air parcel are investigated. Previous studies showed a clear correlation between the prevailing weather situation at the time when the NOx emission occurs and the climate impact of the NOx emission. Here, we show that the aviation NOx contribution to ozone is characterised by the time and magnitude of its maximum and demonstrate that a high O3 maximum is only possible if the maximum occurs early after the emission. Early maxima occur only if the air parcel, in which the NOx emission occurred, is transported to lower altitudes, where the chemical activity is high. This downward transport is caused by subsidence in high-pressure systems. A high ozone magnitude only occurs if the air parcel is transported downward into a region in which the ozone production is efficient. This efficiency is limited by atmospheric NOx and HOx concentrations during summer and winter, respectively. We show that a large CH4 depletion ... |
format |
Article in Journal/Newspaper |
author |
Rosanka, Simon Frömming, Christine Grewe, Volker |
author_facet |
Rosanka, Simon Frömming, Christine Grewe, Volker |
author_sort |
Rosanka, Simon |
title |
The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions |
title_short |
The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions |
title_full |
The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions |
title_fullStr |
The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions |
title_full_unstemmed |
The impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from NO x emissions |
title_sort |
impact of weather patterns and related transport processes on aviation's contribution to ozone and methane concentrations from no x emissions |
publisher |
EGU |
publishDate |
2020 |
url |
https://juser.fz-juelich.de/record/891839 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-01762%22 |
op_coverage |
DE |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Atmospheric chemistry and physics 20(20), 12347 - 12361 (2020). doi:10.5194/acp-20-12347-2020 |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000583032000004 info:eu-repo/semantics/altIdentifier/hdl/2128/27624 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/issn/1680-7324 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-20-12347-2020 https://juser.fz-juelich.de/record/891839 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-01762%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-20-12347-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
20 |
container_start_page |
12347 |
op_container_end_page |
12361 |
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1766136102747373568 |