Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara

Detalhes bibliográficos
Autor(a) principal: Guimarães,Giselle Parno
Data de Publicação: 2008
Outros Autores: Mello,William Zamboni de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000700003
Resumo: In Surface water concentrations of N2O were measured at 37 stations in Guanabara Bay and fluxes estimated across the air-sea interface. Concentrations averaged 8.2 ± 2.2 nmol L-1 and 90% of the stations showed supersaturation averaging 33%. N2O fluxes were estimated using a two-film model which is given by the product of the concentration difference across the film and the gas transfer coefficient (k w). Two parametrizations of k w were used which provided average fluxes of 0.3 and 3.0 µg N m-2 h-1. Flux measurements using floating chambers (not reported here) seem to agree with the upper limit of these estimates.
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spelling Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabaranitrous oxideair-sea exchangeGuanabara BayIn Surface water concentrations of N2O were measured at 37 stations in Guanabara Bay and fluxes estimated across the air-sea interface. Concentrations averaged 8.2 ± 2.2 nmol L-1 and 90% of the stations showed supersaturation averaging 33%. N2O fluxes were estimated using a two-film model which is given by the product of the concentration difference across the film and the gas transfer coefficient (k w). Two parametrizations of k w were used which provided average fluxes of 0.3 and 3.0 µg N m-2 h-1. Flux measurements using floating chambers (not reported here) seem to agree with the upper limit of these estimates.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000700003Química Nova v.31 n.7 2008reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422008000700003info:eu-repo/semantics/openAccessGuimarães,Giselle ParnoMello,William Zamboni depor2008-12-09T00:00:00Zoai:scielo:S0100-40422008000700003Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2008-12-09T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
title Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
spellingShingle Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
Guimarães,Giselle Parno
nitrous oxide
air-sea exchange
Guanabara Bay
title_short Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
title_full Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
title_fullStr Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
title_full_unstemmed Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
title_sort Fluxos de óxido nitroso na interface ar-mar na Baía de Guanabara
author Guimarães,Giselle Parno
author_facet Guimarães,Giselle Parno
Mello,William Zamboni de
author_role author
author2 Mello,William Zamboni de
author2_role author
dc.contributor.author.fl_str_mv Guimarães,Giselle Parno
Mello,William Zamboni de
dc.subject.por.fl_str_mv nitrous oxide
air-sea exchange
Guanabara Bay
topic nitrous oxide
air-sea exchange
Guanabara Bay
description In Surface water concentrations of N2O were measured at 37 stations in Guanabara Bay and fluxes estimated across the air-sea interface. Concentrations averaged 8.2 ± 2.2 nmol L-1 and 90% of the stations showed supersaturation averaging 33%. N2O fluxes were estimated using a two-film model which is given by the product of the concentration difference across the film and the gas transfer coefficient (k w). Two parametrizations of k w were used which provided average fluxes of 0.3 and 3.0 µg N m-2 h-1. Flux measurements using floating chambers (not reported here) seem to agree with the upper limit of these estimates.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000700003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000700003
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422008000700003
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.31 n.7 2008
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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