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dc.contributor.author
Hossaini, Ryan
dc.contributor.author
Chipperfield, Martyn P.
dc.contributor.author
Saiz Lopez, Alfonso
dc.contributor.author
Fernandez, Rafael Pedro
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dc.contributor.author
Monks, Sarah
dc.contributor.author
Feng, Wuhu
dc.contributor.author
Brauer, Peter
dc.contributor.author
Von Glasow, Roland
dc.date.available
2020-03-25T19:44:17Z
dc.date.issued
2016-12
dc.identifier.citation
Hossaini, Ryan; Chipperfield, Martyn P.; Saiz Lopez, Alfonso; Fernandez, Rafael Pedro; Monks, Sarah; et al.; A global model of tropospheric chlorine chemistry: Organic versus inorganic sources and impact on methane oxidation; American Geophysical Union; Journal of Geophysical Research; 121; 23; 12-2016; 14.271-14.297
dc.identifier.issn
0148-0227
dc.identifier.uri
http://hdl.handle.net/11336/100772
dc.description.abstract
Chlorine atoms (Cl) are highly reactive toward hydrocarbons in the Earth’s troposphere, including the greenhouse gas methane (CH4). However, the regional and global CH4 sink from Cl is poorly quantified as tropospheric Cl concentrations ([Cl]) are uncertain by ~2 orders of magnitude. Here we describe the addition of a detailed tropospheric chlorine scheme to the TOMCAT chemical transport model. The model includes several sources of tropospheric inorganic chlorine (Cly), including (i) the oxidation of chlorocarbons of natural (CH3Cl, CHBr2Cl, CH2BrCl, and CHBrCl2) and anthropogenic (CH2Cl2, CHCl3, C2Cl4, C2HCl3, and CH2ClCH2Cl) origin and (ii) sea-salt aerosol dechlorination. Simulations were performed to quantify tropospheric [Cl], with a focus on the marine boundary layer, and quantify the global significance of Cl atom CH4 oxidation. In agreement with observations, simulated surface levels of hydrogen chloride (HCl), the most abundant Cly reservoir, reach several parts per billion (ppb) over polluted coastal/continental regions, with sub-ppb levels typical in more remote regions. Modeled annual mean surface [Cl] exhibits large spatial variability with the largest levels, typically in the range of 1-5×104 atoms cm-3, in the polluted northern hemisphere. Chlorocarbon oxidation provides a tropospheric Cly source of up to ~4320 Gg Cl/yr, sustaining a background surface [Cl] of <0.1 to 0.5 × 103 atoms cm-3 over large areas. Globally, we estimate a tropospheric methane sink of ~12-13 Tg CH4/yr due the CH4 + Cl reaction (~2.5% of total CH4 oxidation). Larger regional effects are predicted, with Cl accounting for ~10 to >20% of total boundary layer CH4 oxidation in some locations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
TROPOSPHERIC CHLORINE
dc.subject
METHANE OXIDATION
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VSL CHEMISTRY
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
A global model of tropospheric chlorine chemistry: Organic versus inorganic sources and impact on methane oxidation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-03-18T20:40:07Z
dc.journal.volume
121
dc.journal.number
23
dc.journal.pagination
14.271-14.297
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Hossaini, Ryan. University of Lancaster; Reino Unido
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Fil: Chipperfield, Martyn P.. University of Leeds; Reino Unido
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Fil: Saiz Lopez, Alfonso. Consejo Superior de Investigaciones Científicas. Instituto de Química Física; España
dc.description.fil
Fil: Fernandez, Rafael Pedro. Consejo Superior de Investigaciones Científicas. Instituto de Química Física; España. Universidad Tecnologica Nacional. Facultad Regional Mendoza. Secretaría de Ciencia, Tecnología y Postgrado; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.description.fil
Fil: Monks, Sarah. National Center For Atmospheric Research. Amospheric Chemistry División; Estados Unidos. University of Colorado Boulder; Estados Unidos
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Fil: Feng, Wuhu. University of Leeds; Reino Unido
dc.description.fil
Fil: Brauer, Peter. University of New York; Estados Unidos. University of East Anglia; Reino Unido
dc.description.fil
Fil: Von Glasow, Roland. University of East Anglia; Reino Unido
dc.journal.title
Journal of Geophysical Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2016JD025756/abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/2016JD025756
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