Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires

Detalhes bibliográficos
Autor(a) principal: Val Martin, Maria
Data de Publicação: 2006
Outros Autores: Honrath, Richard, Owen, R. Chris, Pfister, Gabriele, Fialho, Paulo, Barata, Filipe
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.3/1499
Resumo: Copyright © 2006 American Geophysical Union. All Rights Reserved.
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spelling Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfiresNitrogen OxidesBlack CarbonOzoneFree TroposphereBoreal FiresNorth AtlanticCopyright © 2006 American Geophysical Union. All Rights Reserved.Extensive wildfires burned in northern North America during summer 2004, releasing large amounts of trace gases and aerosols into the atmosphere. Emissions from these wildfires frequently impacted the PICO-NARE station, a mountaintop site situated 6–15 days downwind from the fires in the Azores Islands. To assess the impacts of the boreal wildfire emissions on the levels of aerosol black carbon (BC), nitrogen oxides and O3 downwind from North America, we analyzed measurements of CO, BC, total reactive nitrogen oxides (NO y ), NO x (NO + NO2) and O3 made from June to September 2004 in combination with MOZART chemical transport model simulations. Long-range transport of boreal wildfire emissions resulted in large enhancements of CO, BC, NO y and NO x , with levels up to 250 ppbv, 665 ng mˉ³, 1100 pptv and 135 pptv, respectively. Enhancement ratios relative to CO were variable in the plumes sampled, most likely because of variations in wildfire emissions and removal processes during transport. Analyses of ΔBC/ΔCO, ΔNO y /ΔCO and ΔNO x /ΔCO ratios indicate that NO y and BC were on average efficiently exported in these plumes and suggest that decomposition of PAN to NO x was a significant source of NO x . High levels of NO x suggest continuing formation of O3 in these well-aged plumes. O3 levels were also significantly enhanced in the plumes, reaching up to 75 ppbv. Analysis of ΔO3/ΔCO ratios showed distinct behaviors of O3 in the plumes, which varied from significant to lower O3 production. We identify several potential reasons for the complex effects of boreal wildfire emissions on O3 and conclude that this behavior needs to be explored further in the future. These observations demonstrate that boreal wildfire emissions significantly contributed to the NO x and O3 budgets in the central North Atlantic lower free troposphere during summer 2004 and imply large-scale impacts on direct radiative forcing of the atmosphere and on tropospheric NO x and O3.American Geophysical Union (AGU)Repositório da Universidade dos AçoresVal Martin, MariaHonrath, RichardOwen, R. ChrisPfister, GabrieleFialho, PauloBarata, Filipe2012-10-09T15:17:00Z2006-12-072012-10-08T17:07:21Z2006-12-07T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.3/1499engVal Martín, M.; Honrath, R.E.; Owen, R.C.; Pfister, G.; Fialho, P.; Barata, F. «Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires», "Journal of Geophysical Research – Atmospheres", 111, D23S60-1- D23S60-17, 2006.0148-0227 (Print)info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-12-20T14:29:15Zoai:repositorio.uac.pt:10400.3/1499Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:24:21.402345Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
title Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
spellingShingle Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
Val Martin, Maria
Nitrogen Oxides
Black Carbon
Ozone
Free Troposphere
Boreal Fires
North Atlantic
title_short Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
title_full Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
title_fullStr Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
title_full_unstemmed Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
title_sort Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires
author Val Martin, Maria
author_facet Val Martin, Maria
Honrath, Richard
Owen, R. Chris
Pfister, Gabriele
Fialho, Paulo
Barata, Filipe
author_role author
author2 Honrath, Richard
Owen, R. Chris
Pfister, Gabriele
Fialho, Paulo
Barata, Filipe
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade dos Açores
dc.contributor.author.fl_str_mv Val Martin, Maria
Honrath, Richard
Owen, R. Chris
Pfister, Gabriele
Fialho, Paulo
Barata, Filipe
dc.subject.por.fl_str_mv Nitrogen Oxides
Black Carbon
Ozone
Free Troposphere
Boreal Fires
North Atlantic
topic Nitrogen Oxides
Black Carbon
Ozone
Free Troposphere
Boreal Fires
North Atlantic
description Copyright © 2006 American Geophysical Union. All Rights Reserved.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-07
2006-12-07T00:00:00Z
2012-10-09T15:17:00Z
2012-10-08T17:07:21Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.3/1499
url http://hdl.handle.net/10400.3/1499
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Val Martín, M.; Honrath, R.E.; Owen, R.C.; Pfister, G.; Fialho, P.; Barata, F. «Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires», "Journal of Geophysical Research – Atmospheres", 111, D23S60-1- D23S60-17, 2006.
0148-0227 (Print)
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union (AGU)
publisher.none.fl_str_mv American Geophysical Union (AGU)
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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