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

Handle URI:
http://hdl.handle.net/10754/552131
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
Authors:
Martini, Matus; Allen, Dale J.; Pickering, Kenneth E.; Stenchikov, Georgiy L. ( 0000-0001-9033-4925 ) ; Richter, Andreas; Hyer, Edward J.; Loughner, Christopher P.
Abstract:
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.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
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 2011, 116 (D7) Journal of Geophysical Research
Journal:
Journal of Geophysical Research
Issue Date:
7-Apr-2011
DOI:
10.1029/2010JD014305
Type:
Article
ISSN:
0148-0227
Additional Links:
http://doi.wiley.com/10.1029/2010JD014305
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorMartini, Matusen
dc.contributor.authorAllen, Dale J.en
dc.contributor.authorPickering, Kenneth E.en
dc.contributor.authorStenchikov, Georgiy L.en
dc.contributor.authorRichter, Andreasen
dc.contributor.authorHyer, Edward J.en
dc.contributor.authorLoughner, Christopher P.en
dc.date.accessioned2015-05-03T14:14:21Zen
dc.date.available2015-05-03T14:14:21Zen
dc.date.issued2011-04-07en
dc.identifier.citationThe 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 2011, 116 (D7) Journal of Geophysical Researchen
dc.identifier.issn0148-0227en
dc.identifier.doi10.1029/2010JD014305en
dc.identifier.urihttp://hdl.handle.net/10754/552131en
dc.description.abstractWe 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.en
dc.relation.urlhttp://doi.wiley.com/10.1029/2010JD014305en
dc.rightsArchived with thanks to Journal of Geophysical Researchen
dc.subjectradiative forcingen
dc.subjectlong-range transporten
dc.subjectinterannual variability of lightningen
dc.titleThe 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 2004en
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Geophysical Researchen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Atmospheric and Oceanic Science, University of Maryland, College Park, Maryland, USAen
dc.contributor.institutionNASA Goddard Space Flight Center, Greenbelt, Maryland, USAen
dc.contributor.institutionDepartment of Environmental Sciences, Rutgers, State University of New Jersey, New Brunswick, New Jersey, USAen
dc.contributor.institutionInstitute of Environmental Physics, University of Bremen, Bremen, Germanyen
dc.contributor.institutionUCAR Visiting Scientist Program, Naval Research Laboratory, Monterey, California, USAen
kaust.authorStenchikov, Georgiy L.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.