Transport of Asian ozone pollution into surface air over the western United States in spring
We use an ensemble of aircraft, satellite, sonde, and surface observations for April-May 2006 (NASA/INTEX-B aircraft campaign) to better understand the mechanisms for transpacific ozone pollution and its implications for North American air quality. The observations are interpreted with a global 3-D...
Published in: | Journal of Geophysical Research: Atmospheres |
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American Geophysical Union
2012
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-383 https://doi.org/10.1029/2011JD016961 |
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ftncar:oai:drupal-site.org:articles_11693 2023-09-05T13:11:35+02:00 Transport of Asian ozone pollution into surface air over the western United States in spring Lin, Meiyun (author) Fiore, Arlene (author) Horowitz, Larry (author) Cooper, Owen (author) Naik, Vaishali (author) Holloway, John (author) Johnson, Bryan (author) Middlebrook, Anne (author) Oltmans, Samuel (author) Pollack, Ilana (author) Ryerson, Tomas (author) Warner, Juying (author) Wiedinmyer, Christine (author) Wilson, John (author) Wyman, Bruce (author) 2012-02-17 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-383 https://doi.org/10.1029/2011JD016961 en eng American Geophysical Union Journal of Geophysical Research-Atmospheres http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-383 doi:10.1029/2011JD016961 ark:/85065/d7183741 Copyright 2012 American Geophysical Union. Air quality Long-range transport Ozone Text article 2012 ftncar https://doi.org/10.1029/2011JD016961 2023-08-14T18:39:52Z We use an ensemble of aircraft, satellite, sonde, and surface observations for April-May 2006 (NASA/INTEX-B aircraft campaign) to better understand the mechanisms for transpacific ozone pollution and its implications for North American air quality. The observations are interpreted with a global 3-D chemical transport model (GEOS-Chem). OMI NO₂ satellite observations constrain Asian anthropogenic NOx emissions and indicate a factor of 2 increase from 2000 to 2006 in China. Satellite observations of CO from AIRS and TES indicate two major events of Asian transpacific pollution during INTEX-B. Correlation between TES CO and ozone observations shows evidence for transpacific ozone pollution. The semi-permanent Pacific High and Aleutian Low cause splitting of transpacific pollution plumes over the Northeast Pacific. The northern branch circulates around the Aleutian Low and has little impact on North America. The southern branch circulates around the Pacific High and some of that air impacts western North America. Both aircraft measurements and model results show sustained ozone production driven by peroxyacetylnitrate (PAN) decomposition in the southern branch, roughly doubling the transpacific influence from ozone produced in the Asian boundary layer. Model simulation of ozone observations at Mt. Bachelor Observatory in Oregon (2.7 km altitude) indicates a mean Asian ozone pollution contribution of 9±3 ppbv to the mean observed concentration of 54 ppbv, reflecting mostly an enhancement in background ozone rather than episodic Asian plumes. Asian pollution enhanced surface ozone concentrations by 5 - 7 ppbv over western North America in spring 2006. The 2000 - 2006 rise in Asian anthropogenic emissions increased this influence by 1 - 2 ppbv. Article in Journal/Newspaper aleutian low OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Pacific Journal of Geophysical Research: Atmospheres 117 D21 n/a n/a |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Air quality Long-range transport Ozone |
spellingShingle |
Air quality Long-range transport Ozone Transport of Asian ozone pollution into surface air over the western United States in spring |
topic_facet |
Air quality Long-range transport Ozone |
description |
We use an ensemble of aircraft, satellite, sonde, and surface observations for April-May 2006 (NASA/INTEX-B aircraft campaign) to better understand the mechanisms for transpacific ozone pollution and its implications for North American air quality. The observations are interpreted with a global 3-D chemical transport model (GEOS-Chem). OMI NO₂ satellite observations constrain Asian anthropogenic NOx emissions and indicate a factor of 2 increase from 2000 to 2006 in China. Satellite observations of CO from AIRS and TES indicate two major events of Asian transpacific pollution during INTEX-B. Correlation between TES CO and ozone observations shows evidence for transpacific ozone pollution. The semi-permanent Pacific High and Aleutian Low cause splitting of transpacific pollution plumes over the Northeast Pacific. The northern branch circulates around the Aleutian Low and has little impact on North America. The southern branch circulates around the Pacific High and some of that air impacts western North America. Both aircraft measurements and model results show sustained ozone production driven by peroxyacetylnitrate (PAN) decomposition in the southern branch, roughly doubling the transpacific influence from ozone produced in the Asian boundary layer. Model simulation of ozone observations at Mt. Bachelor Observatory in Oregon (2.7 km altitude) indicates a mean Asian ozone pollution contribution of 9±3 ppbv to the mean observed concentration of 54 ppbv, reflecting mostly an enhancement in background ozone rather than episodic Asian plumes. Asian pollution enhanced surface ozone concentrations by 5 - 7 ppbv over western North America in spring 2006. The 2000 - 2006 rise in Asian anthropogenic emissions increased this influence by 1 - 2 ppbv. |
author2 |
Lin, Meiyun (author) Fiore, Arlene (author) Horowitz, Larry (author) Cooper, Owen (author) Naik, Vaishali (author) Holloway, John (author) Johnson, Bryan (author) Middlebrook, Anne (author) Oltmans, Samuel (author) Pollack, Ilana (author) Ryerson, Tomas (author) Warner, Juying (author) Wiedinmyer, Christine (author) Wilson, John (author) Wyman, Bruce (author) |
format |
Article in Journal/Newspaper |
title |
Transport of Asian ozone pollution into surface air over the western United States in spring |
title_short |
Transport of Asian ozone pollution into surface air over the western United States in spring |
title_full |
Transport of Asian ozone pollution into surface air over the western United States in spring |
title_fullStr |
Transport of Asian ozone pollution into surface air over the western United States in spring |
title_full_unstemmed |
Transport of Asian ozone pollution into surface air over the western United States in spring |
title_sort |
transport of asian ozone pollution into surface air over the western united states in spring |
publisher |
American Geophysical Union |
publishDate |
2012 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-383 https://doi.org/10.1029/2011JD016961 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
aleutian low |
genre_facet |
aleutian low |
op_relation |
Journal of Geophysical Research-Atmospheres http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-010-383 doi:10.1029/2011JD016961 ark:/85065/d7183741 |
op_rights |
Copyright 2012 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2011JD016961 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
117 |
container_issue |
D21 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1776205280979189760 |