Global impact of road traffic emissions on tropospheric ozone
International audience Road traffic is one of the major anthropogenic emission sectors for NO x , CO and NMHCs (non-methane hydrocarbons). We applied ECHAM4/CBM, a general circulation model coupled to a chemistry module, which includes higher hydrocarbons, to investigate the global impact of road tr...
Main Authors: | , , , |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2005
|
Subjects: | |
Online Access: | https://hal.science/hal-00301866 https://hal.science/hal-00301866/document https://hal.science/hal-00301866/file/acpd-5-10339-2005.pdf |
id |
ftccsdartic:oai:HAL:hal-00301866v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-00301866v1 2023-11-12T04:12:43+01:00 Global impact of road traffic emissions on tropospheric ozone Matthes, S. Grewe, V. Sausen, R. Roelofs, G.-J. DLR Institut für Physik der Atmosphäre (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) Institut for Marine Research 2005-10-24 https://hal.science/hal-00301866 https://hal.science/hal-00301866/document https://hal.science/hal-00301866/file/acpd-5-10339-2005.pdf en eng HAL CCSD European Geosciences Union hal-00301866 https://hal.science/hal-00301866 https://hal.science/hal-00301866/document https://hal.science/hal-00301866/file/acpd-5-10339-2005.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301866 Atmospheric Chemistry and Physics Discussions, 2005, 5 (5), pp.10339-10367 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2005 ftccsdartic 2023-10-21T23:12:58Z International audience Road traffic is one of the major anthropogenic emission sectors for NO x , CO and NMHCs (non-methane hydrocarbons). We applied ECHAM4/CBM, a general circulation model coupled to a chemistry module, which includes higher hydrocarbons, to investigate the global impact of road traffic emissions on the atmosphere. Improving over previous global modelling studies, which concentrated on road traffic NO x and CO-emissions only, we assess the impact of NMHC-emissions from road traffic. It is revealed that NMHC-emissions from road traffic play a key role for the impact on ozone. They are responsible for (indirect) long-range transport of NO x from road traffic via the formation of PAN, which is not found in a simulation without NMHC emissions from road traffic. Long-range transport of NMHC-induced PAN impacts on the ozone distribution in northern hemisphere regions far away from the sources, especially in Arctic and remote maritime regions. There, during subsidence, PAN acts as a source for NO x , caused by thermal decay. Hence, ozone is produced. In July total road traffic emissions (NO x , CO and NMHCs) contribute to the zonally averaged ozone distribution by more than 12% near the surface in the northern hemisphere midlatitudes and arctic latitudes. In January road traffic emissions contribute near the surface in northern and southern extratropics more than 8%. Sensitivity studies for regional emission show that effective transport of road traffic emissions occurs mainly in the free troposphere. In tropical latitudes of America up to an altitude of 200 hPa, global road traffic emissions contribute about 4% to the ozone concentration. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Matthes, S. Grewe, V. Sausen, R. Roelofs, G.-J. Global impact of road traffic emissions on tropospheric ozone |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Road traffic is one of the major anthropogenic emission sectors for NO x , CO and NMHCs (non-methane hydrocarbons). We applied ECHAM4/CBM, a general circulation model coupled to a chemistry module, which includes higher hydrocarbons, to investigate the global impact of road traffic emissions on the atmosphere. Improving over previous global modelling studies, which concentrated on road traffic NO x and CO-emissions only, we assess the impact of NMHC-emissions from road traffic. It is revealed that NMHC-emissions from road traffic play a key role for the impact on ozone. They are responsible for (indirect) long-range transport of NO x from road traffic via the formation of PAN, which is not found in a simulation without NMHC emissions from road traffic. Long-range transport of NMHC-induced PAN impacts on the ozone distribution in northern hemisphere regions far away from the sources, especially in Arctic and remote maritime regions. There, during subsidence, PAN acts as a source for NO x , caused by thermal decay. Hence, ozone is produced. In July total road traffic emissions (NO x , CO and NMHCs) contribute to the zonally averaged ozone distribution by more than 12% near the surface in the northern hemisphere midlatitudes and arctic latitudes. In January road traffic emissions contribute near the surface in northern and southern extratropics more than 8%. Sensitivity studies for regional emission show that effective transport of road traffic emissions occurs mainly in the free troposphere. In tropical latitudes of America up to an altitude of 200 hPa, global road traffic emissions contribute about 4% to the ozone concentration. |
author2 |
DLR Institut für Physik der Atmosphäre (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) Institut for Marine Research |
format |
Article in Journal/Newspaper |
author |
Matthes, S. Grewe, V. Sausen, R. Roelofs, G.-J. |
author_facet |
Matthes, S. Grewe, V. Sausen, R. Roelofs, G.-J. |
author_sort |
Matthes, S. |
title |
Global impact of road traffic emissions on tropospheric ozone |
title_short |
Global impact of road traffic emissions on tropospheric ozone |
title_full |
Global impact of road traffic emissions on tropospheric ozone |
title_fullStr |
Global impact of road traffic emissions on tropospheric ozone |
title_full_unstemmed |
Global impact of road traffic emissions on tropospheric ozone |
title_sort |
global impact of road traffic emissions on tropospheric ozone |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00301866 https://hal.science/hal-00301866/document https://hal.science/hal-00301866/file/acpd-5-10339-2005.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301866 Atmospheric Chemistry and Physics Discussions, 2005, 5 (5), pp.10339-10367 |
op_relation |
hal-00301866 https://hal.science/hal-00301866 https://hal.science/hal-00301866/document https://hal.science/hal-00301866/file/acpd-5-10339-2005.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782331096053055488 |