Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions

Autores
Li, Qinyi; Meidan, Daphne; Hess, Peter Otto; Añel, Juan A.; Cuevas, Carlos Alberto; Doney, Scott; Fernandez, Rafael Pedro; van Herpen, Maarten; Höglund Isaksson, Lena; Johnson, Matthew S.; Kinnison, Douglas E.; Lamarque, Jean Francoise; Röckmann, Thomas; Mahowald, Natalie M.; Saiz López, Alfonso
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Atmospheric methane is both a potent greenhouse gas and photochemically active, with approximately equal anthropogenic and natural sources. The addition of chlorine to the atmosphere has been proposed to mitigate global warming through methane reduction by increasing its chemical loss. However, the potential environmental impacts of such climate mitigation remainunexplored. Here, sensitivity studies are conducted to evaluate the possible effects of increasing reactive chlorine emissions on the methane budget, atmospheric composition and radiative forcing. Because of non-linear chemistry, in order to achieve a reduction in methane burden (instead of anincrease), the chlorine atom burden needs to be a minimum of three times the estimated present-day burden. If the methane removal target is set to 20%, 45%, or 70% less global methane by 2050 compared to the levels in the Representative Concentration Pathway 8.5 scenario (RCP8.5), our modeling results suggest that additional chlorine fluxes of 630, 1250, and 1880 Tg Cl/year, respectively, are needed. The results show that increasing chlorine emissions also induces significant changes in other important climate forcers. Remarkably, the tropospheric ozone decrease is large enough that the magnitude of radiative forcing decrease is similar to that of methane. Adding 630, 1250, and 1880 Tg Cl/year to the RCP8.5 scenario, chosen to have the mostconsistent current-day trends of methane, will decrease the surface temperature by 0.2, 0.4, and 0.6 °C by 2050, respectively. The quantity and method in which the chlorine is added, its interactions with climate pathways, and the potential environmental impacts on air quality and ocean acidity, must be carefully considered before any action is taken.
Fil: Li, Qinyi. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Consejo Superior de Investigaciones Científicas; España. Universidad Politécnica de Hong Kong; China. Shandong University; China. Universidad de Shandong. Instituto de Investigación Ambiental; China
Fil: Meidan, Daphne. Cornell University; Estados Unidos
Fil: Hess, Peter Otto. Cornell University; Estados Unidos
Fil: Añel, Juan A.. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Universidad de Vigo; España
Fil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Consejo Superior de Investigaciones Científicas; España
Fil: Doney, Scott. University of Virginia; Estados Unidos
Fil: Fernandez, Rafael Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
Fil: van Herpen, Maarten. No especifíca;
Fil: Höglund Isaksson, Lena. No especifíca;
Fil: Johnson, Matthew S.. Universidad de Copenhagen; Dinamarca
Fil: Kinnison, Douglas E.. National Center for Atmospheric Research; Estados Unidos
Fil: Lamarque, Jean Francoise. National Center for Atmospheric Research; Estados Unidos
Fil: Röckmann, Thomas. University of Utrecht; Países Bajos
Fil: Mahowald, Natalie M.. Cornell University; Estados Unidos
Fil: Saiz López, Alfonso. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España
Materia
Methane removal
Chlorine-driven loss
Cl2 Source
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/245904
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactionsLi, QinyiMeidan, DaphneHess, Peter OttoAñel, Juan A.Cuevas, Carlos AlbertoDoney, ScottFernandez, Rafael Pedrovan Herpen, MaartenHöglund Isaksson, LenaJohnson, Matthew S.Kinnison, Douglas E.Lamarque, Jean FrancoiseRöckmann, ThomasMahowald, Natalie M.Saiz López, AlfonsoMethane removalChlorine-driven lossCl2 Sourcehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Atmospheric methane is both a potent greenhouse gas and photochemically active, with approximately equal anthropogenic and natural sources. The addition of chlorine to the atmosphere has been proposed to mitigate global warming through methane reduction by increasing its chemical loss. However, the potential environmental impacts of such climate mitigation remainunexplored. Here, sensitivity studies are conducted to evaluate the possible effects of increasing reactive chlorine emissions on the methane budget, atmospheric composition and radiative forcing. Because of non-linear chemistry, in order to achieve a reduction in methane burden (instead of anincrease), the chlorine atom burden needs to be a minimum of three times the estimated present-day burden. If the methane removal target is set to 20%, 45%, or 70% less global methane by 2050 compared to the levels in the Representative Concentration Pathway 8.5 scenario (RCP8.5), our modeling results suggest that additional chlorine fluxes of 630, 1250, and 1880 Tg Cl/year, respectively, are needed. The results show that increasing chlorine emissions also induces significant changes in other important climate forcers. Remarkably, the tropospheric ozone decrease is large enough that the magnitude of radiative forcing decrease is similar to that of methane. Adding 630, 1250, and 1880 Tg Cl/year to the RCP8.5 scenario, chosen to have the mostconsistent current-day trends of methane, will decrease the surface temperature by 0.2, 0.4, and 0.6 °C by 2050, respectively. The quantity and method in which the chlorine is added, its interactions with climate pathways, and the potential environmental impacts on air quality and ocean acidity, must be carefully considered before any action is taken.Fil: Li, Qinyi. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Consejo Superior de Investigaciones Científicas; España. Universidad Politécnica de Hong Kong; China. Shandong University; China. Universidad de Shandong. Instituto de Investigación Ambiental; ChinaFil: Meidan, Daphne. Cornell University; Estados UnidosFil: Hess, Peter Otto. Cornell University; Estados UnidosFil: Añel, Juan A.. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Universidad de Vigo; EspañaFil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Consejo Superior de Investigaciones Científicas; EspañaFil: Doney, Scott. University of Virginia; Estados UnidosFil: Fernandez, Rafael Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; ArgentinaFil: van Herpen, Maarten. No especifíca;Fil: Höglund Isaksson, Lena. No especifíca;Fil: Johnson, Matthew S.. Universidad de Copenhagen; DinamarcaFil: Kinnison, Douglas E.. National Center for Atmospheric Research; Estados UnidosFil: Lamarque, Jean Francoise. National Center for Atmospheric Research; Estados UnidosFil: Röckmann, Thomas. University of Utrecht; Países BajosFil: Mahowald, Natalie M.. Cornell University; Estados UnidosFil: Saiz López, Alfonso. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; EspañaNature2023-07-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/245904Li, Qinyi; Meidan, Daphne; Hess, Peter Otto; Añel, Juan A.; Cuevas, Carlos Alberto; et al.; Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions; Nature; Nature Communications; 14; 1; 8-7-2023; 1 - 102041-1723CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-39794-7info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41467-023-39794-7info:eu-repo/semantics/altIdentifier/url/https://pubmed.ncbi.nlm.nih.gov/37422475/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:51:34Zoai:ri.conicet.gov.ar:11336/245904instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:51:34.965CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
title Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
spellingShingle Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
Li, Qinyi
Methane removal
Chlorine-driven loss
Cl2 Source
title_short Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
title_full Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
title_fullStr Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
title_full_unstemmed Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
title_sort Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions
dc.creator.none.fl_str_mv Li, Qinyi
Meidan, Daphne
Hess, Peter Otto
Añel, Juan A.
Cuevas, Carlos Alberto
Doney, Scott
Fernandez, Rafael Pedro
van Herpen, Maarten
Höglund Isaksson, Lena
Johnson, Matthew S.
Kinnison, Douglas E.
Lamarque, Jean Francoise
Röckmann, Thomas
Mahowald, Natalie M.
Saiz López, Alfonso
author Li, Qinyi
author_facet Li, Qinyi
Meidan, Daphne
Hess, Peter Otto
Añel, Juan A.
Cuevas, Carlos Alberto
Doney, Scott
Fernandez, Rafael Pedro
van Herpen, Maarten
Höglund Isaksson, Lena
Johnson, Matthew S.
Kinnison, Douglas E.
Lamarque, Jean Francoise
Röckmann, Thomas
Mahowald, Natalie M.
Saiz López, Alfonso
author_role author
author2 Meidan, Daphne
Hess, Peter Otto
Añel, Juan A.
Cuevas, Carlos Alberto
Doney, Scott
Fernandez, Rafael Pedro
van Herpen, Maarten
Höglund Isaksson, Lena
Johnson, Matthew S.
Kinnison, Douglas E.
Lamarque, Jean Francoise
Röckmann, Thomas
Mahowald, Natalie M.
Saiz López, Alfonso
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Methane removal
Chlorine-driven loss
Cl2 Source
topic Methane removal
Chlorine-driven loss
Cl2 Source
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Atmospheric methane is both a potent greenhouse gas and photochemically active, with approximately equal anthropogenic and natural sources. The addition of chlorine to the atmosphere has been proposed to mitigate global warming through methane reduction by increasing its chemical loss. However, the potential environmental impacts of such climate mitigation remainunexplored. Here, sensitivity studies are conducted to evaluate the possible effects of increasing reactive chlorine emissions on the methane budget, atmospheric composition and radiative forcing. Because of non-linear chemistry, in order to achieve a reduction in methane burden (instead of anincrease), the chlorine atom burden needs to be a minimum of three times the estimated present-day burden. If the methane removal target is set to 20%, 45%, or 70% less global methane by 2050 compared to the levels in the Representative Concentration Pathway 8.5 scenario (RCP8.5), our modeling results suggest that additional chlorine fluxes of 630, 1250, and 1880 Tg Cl/year, respectively, are needed. The results show that increasing chlorine emissions also induces significant changes in other important climate forcers. Remarkably, the tropospheric ozone decrease is large enough that the magnitude of radiative forcing decrease is similar to that of methane. Adding 630, 1250, and 1880 Tg Cl/year to the RCP8.5 scenario, chosen to have the mostconsistent current-day trends of methane, will decrease the surface temperature by 0.2, 0.4, and 0.6 °C by 2050, respectively. The quantity and method in which the chlorine is added, its interactions with climate pathways, and the potential environmental impacts on air quality and ocean acidity, must be carefully considered before any action is taken.
Fil: Li, Qinyi. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Consejo Superior de Investigaciones Científicas; España. Universidad Politécnica de Hong Kong; China. Shandong University; China. Universidad de Shandong. Instituto de Investigación Ambiental; China
Fil: Meidan, Daphne. Cornell University; Estados Unidos
Fil: Hess, Peter Otto. Cornell University; Estados Unidos
Fil: Añel, Juan A.. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Universidad de Vigo; España
Fil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España. Consejo Superior de Investigaciones Científicas; España
Fil: Doney, Scott. University of Virginia; Estados Unidos
Fil: Fernandez, Rafael Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
Fil: van Herpen, Maarten. No especifíca;
Fil: Höglund Isaksson, Lena. No especifíca;
Fil: Johnson, Matthew S.. Universidad de Copenhagen; Dinamarca
Fil: Kinnison, Douglas E.. National Center for Atmospheric Research; Estados Unidos
Fil: Lamarque, Jean Francoise. National Center for Atmospheric Research; Estados Unidos
Fil: Röckmann, Thomas. University of Utrecht; Países Bajos
Fil: Mahowald, Natalie M.. Cornell University; Estados Unidos
Fil: Saiz López, Alfonso. Consejo Superior de Investigaciones Cientícas. Instituto de Quimica Física Blas Cabrera; España
description Atmospheric methane is both a potent greenhouse gas and photochemically active, with approximately equal anthropogenic and natural sources. The addition of chlorine to the atmosphere has been proposed to mitigate global warming through methane reduction by increasing its chemical loss. However, the potential environmental impacts of such climate mitigation remainunexplored. Here, sensitivity studies are conducted to evaluate the possible effects of increasing reactive chlorine emissions on the methane budget, atmospheric composition and radiative forcing. Because of non-linear chemistry, in order to achieve a reduction in methane burden (instead of anincrease), the chlorine atom burden needs to be a minimum of three times the estimated present-day burden. If the methane removal target is set to 20%, 45%, or 70% less global methane by 2050 compared to the levels in the Representative Concentration Pathway 8.5 scenario (RCP8.5), our modeling results suggest that additional chlorine fluxes of 630, 1250, and 1880 Tg Cl/year, respectively, are needed. The results show that increasing chlorine emissions also induces significant changes in other important climate forcers. Remarkably, the tropospheric ozone decrease is large enough that the magnitude of radiative forcing decrease is similar to that of methane. Adding 630, 1250, and 1880 Tg Cl/year to the RCP8.5 scenario, chosen to have the mostconsistent current-day trends of methane, will decrease the surface temperature by 0.2, 0.4, and 0.6 °C by 2050, respectively. The quantity and method in which the chlorine is added, its interactions with climate pathways, and the potential environmental impacts on air quality and ocean acidity, must be carefully considered before any action is taken.
publishDate 2023
dc.date.none.fl_str_mv 2023-07-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/245904
Li, Qinyi; Meidan, Daphne; Hess, Peter Otto; Añel, Juan A.; Cuevas, Carlos Alberto; et al.; Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions; Nature; Nature Communications; 14; 1; 8-7-2023; 1 - 10
2041-1723
CONICET Digital
CONICET
url http://hdl.handle.net/11336/245904
identifier_str_mv Li, Qinyi; Meidan, Daphne; Hess, Peter Otto; Añel, Juan A.; Cuevas, Carlos Alberto; et al.; Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions; Nature; Nature Communications; 14; 1; 8-7-2023; 1 - 10
2041-1723
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-023-39794-7
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41467-023-39794-7
info:eu-repo/semantics/altIdentifier/url/https://pubmed.ncbi.nlm.nih.gov/37422475/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature
publisher.none.fl_str_mv Nature
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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