The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004
We analyze the contribution of North American (NA) lightning and anthropogenic emissions to ozone concentrations, radiative forcing, and export fluxes from North America during summers 2002 and 2004 using the University of Maryland Chemical Transport Model (UMD-CTM) driven by GEOS-4 reanalysis. Redu...
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ftncar:oai:drupal-site.org:articles_11585 2023-05-15T17:31:37+02:00 The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 Martini, Matus (Matus Martini) (authoraut) Allen, Dale (Dale J. Allen) (authoraut) Pickering, Kenneth (Kenneth E. Pickering) (authoraut) Stenchikov, Georgiy (Georgiy L. Stenchikov) (authoraut) Richter, Andreas (Andreas Richter) (authoraut) Hyer, Edward (Edward J. Hyer) (authoraut) Loughner, Christopher (Christopher P. Loughner) (authoraut) application/pdf https://doi.org/10.1029/2010JD014305 http://n2t.net/ark:/85065/d728086h en eng American Geophysical Union Journal of Geophysical Research-Atmospheres http://dx.doi.org/10.1029/2010JD014305 articles:11585 uri: http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-804 doi:10.1029/2010JD014305 000289359900001 ark:/85065/d728086h http://n2t.net/ark:/85065/d728086h Copyright 2011 American Geophysical Union. Interannual variability of lightning Text article ftncar https://doi.org/10.1029/2010JD014305 2022-08-09T17:14:58Z We analyze the contribution of North American (NA) lightning and anthropogenic emissions to ozone concentrations, radiative forcing, and export fluxes from North America during summers 2002 and 2004 using the University of Maryland Chemical Transport Model (UMD-CTM) driven by GEOS-4 reanalysis. Reduced power plant emissions (NOx SIP Call) and cooler temperatures in 2004 compared to 2002 resulted in lower ambient ozone concentrations over the eastern United States. Lightning flash rates in early summer 2004 were 50% higher than 2002 over the United States. Over the North Atlantic, changes in ozone column between early summer 2002 and 2004 due to changes in lightning and meteorology exceeded the change due to emission reductions by a factor of 7. Late summer changes in lightning had a much smaller impact on ozone columns. In summer 2004, net downward radiative flux at the tropopause due to ozone produced from anthropogenic emissions ranged from 0.15 to 0.30 W m⁻² across the North Atlantic, while that due to ozone produced from lightning NO emissions ranged from 0.20 to 0.50 W m⁻². Enhanced lofting of polluted air followed by stronger westerly winds led to more net export of NOx, NOy, and ozone in early summer 2004 than 2002 despite reduced anthropogenic emissions. Ozone export fluxes across the eastern NA boundary due to anthropogenic emissions were factors of 1.6 and 2 larger than those due to lightning in 2004 and 2002, respectively. Doubling the NA lightning NO source increased downwind ozone enhancements due to lightning NO emissions by one third. Article in Journal/Newspaper North Atlantic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Journal of Geophysical Research 116 D7 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Interannual variability of lightning |
spellingShingle |
Interannual variability of lightning The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 |
topic_facet |
Interannual variability of lightning |
description |
We analyze the contribution of North American (NA) lightning and anthropogenic emissions to ozone concentrations, radiative forcing, and export fluxes from North America during summers 2002 and 2004 using the University of Maryland Chemical Transport Model (UMD-CTM) driven by GEOS-4 reanalysis. Reduced power plant emissions (NOx SIP Call) and cooler temperatures in 2004 compared to 2002 resulted in lower ambient ozone concentrations over the eastern United States. Lightning flash rates in early summer 2004 were 50% higher than 2002 over the United States. Over the North Atlantic, changes in ozone column between early summer 2002 and 2004 due to changes in lightning and meteorology exceeded the change due to emission reductions by a factor of 7. Late summer changes in lightning had a much smaller impact on ozone columns. In summer 2004, net downward radiative flux at the tropopause due to ozone produced from anthropogenic emissions ranged from 0.15 to 0.30 W m⁻² across the North Atlantic, while that due to ozone produced from lightning NO emissions ranged from 0.20 to 0.50 W m⁻². Enhanced lofting of polluted air followed by stronger westerly winds led to more net export of NOx, NOy, and ozone in early summer 2004 than 2002 despite reduced anthropogenic emissions. Ozone export fluxes across the eastern NA boundary due to anthropogenic emissions were factors of 1.6 and 2 larger than those due to lightning in 2004 and 2002, respectively. Doubling the NA lightning NO source increased downwind ozone enhancements due to lightning NO emissions by one third. |
author2 |
Martini, Matus (Matus Martini) (authoraut) Allen, Dale (Dale J. Allen) (authoraut) Pickering, Kenneth (Kenneth E. Pickering) (authoraut) Stenchikov, Georgiy (Georgiy L. Stenchikov) (authoraut) Richter, Andreas (Andreas Richter) (authoraut) Hyer, Edward (Edward J. Hyer) (authoraut) Loughner, Christopher (Christopher P. Loughner) (authoraut) |
format |
Article in Journal/Newspaper |
title |
The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 |
title_short |
The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 |
title_full |
The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 |
title_fullStr |
The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 |
title_full_unstemmed |
The impact of North American anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 |
title_sort |
impact of north american anthropogenic emissions and lightning on long-range transport of trace gases and their export from the continent during summers 2002 and 2004 |
publisher |
American Geophysical Union |
url |
https://doi.org/10.1029/2010JD014305 http://n2t.net/ark:/85065/d728086h |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Journal of Geophysical Research-Atmospheres http://dx.doi.org/10.1029/2010JD014305 articles:11585 uri: http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-804 doi:10.1029/2010JD014305 000289359900001 ark:/85065/d728086h http://n2t.net/ark:/85065/d728086h |
op_rights |
Copyright 2011 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2010JD014305 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
D7 |
_version_ |
1766129288193507328 |