Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century

20 pags., 9 figs., 1 tab.

Detalles Bibliográficos
Autores: Barrera, Javier A., Fernández, Rafael P., Iglesias-Suarez, Fernando, Cuevas, Carlos A., Lamarque, Jean-François, Saiz-Lopez, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/229387
Acceso en línea:http://hdl.handle.net/10261/229387
Access Level:acceso abierto
id ES_2c1e1bf40a6d5fdc4e5e9f8f2087315d
oai_identifier_str oai:digital.csic.es:10261/229387
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
title Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
spellingShingle Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
Barrera, Javier A.
title_short Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
title_full Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
title_fullStr Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
title_full_unstemmed Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
title_sort Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st century
dc.creator.none.fl_str_mv Barrera, Javier A.
Fernández, Rafael P.
Iglesias-Suarez, Fernando
Cuevas, Carlos A.
Lamarque, Jean-François
Saiz-Lopez, A.
author Barrera, Javier A.
author_facet Barrera, Javier A.
Fernández, Rafael P.
Iglesias-Suarez, Fernando
Cuevas, Carlos A.
Lamarque, Jean-François
Saiz-Lopez, A.
author_role author
author2 Fernández, Rafael P.
Iglesias-Suarez, Fernando
Cuevas, Carlos A.
Lamarque, Jean-François
Saiz-Lopez, A.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Agencia Nacional de Promoción Científica y Tecnológica (Argentina)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description 20 pags., 9 figs., 1 tab.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/229387
url http://hdl.handle.net/10261/229387
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/726349
http://dx.doi.org/10.5194/acp-20-8083-2020
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv European Geophysical Society
publisher.none.fl_str_mv European Geophysical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405206504013824
spelling Seasonal impact of biogenic very short-lived bromocarbons on lowermost stratospheric ozone between 60° N and 60° S during the 21st centuryBarrera, Javier A.Fernández, Rafael P.Iglesias-Suarez, FernandoCuevas, Carlos A.Lamarque, Jean-FrançoisSaiz-Lopez, A.20 pags., 9 figs., 1 tab.Biogenic very short-lived bromocarbons (VSLBr) currently represent 25% of the total stratospheric bromine loading. Owing to their much shorter lifetime compared to anthropogenic long-lived bromine (e.g. halons) and chlorine (e.g. chlorofluorocarbons), the impact of VSLBr on ozone peaks in the lowermost stratosphere, which is a key climatic and radiative atmospheric region. Here we present a modelling study of the evolution of stratospheric ozone and its chemical loss within the tropics and at mid-latitudes during the 21st century. Two different experiments are explored: considering and neglecting the additional stratospheric injection of 5 ppt biogenic bromine naturally released from the ocean. Our analysis shows that the inclusion of VSLBr results in a realistic stratospheric bromine loading and improves the agreement between the model and satellite observations of the total ozone column (TOC) for the 1980 2015 period at mid-latitudes. We show that the overall ozone response to VSLBr at mid-latitudes follows the stratospheric evolution of long-lived inorganic chlorine and bromine throughout the 21st century. Additional ozone loss due to VSLBr is maximized during the present-day period (1990 2010), with TOC differences of 8DU (3 %) and 5:5DU (2 %) for the Southern Hemisphere and Northern Hemisphere midlatitudes (SH-MLs and NH-MLs), respectively. Moreover, the projected TOC differences at the end of the 21st century are 50% lower than the values found for the present-day period. We find that seasonal VSLBr impact on lowermost stratospheric ozone at mid-latitude is influenced by the seasonality of the heterogeneous inorganic-chlorine reactivation processes on ice crystals. Indeed, due to the more efficient reactivation of chlorine reservoirs (mainly ClONO2 and HCl) within the colder SH-ML lowermost stratosphere, the seasonal VSLBr impact shows a small but persistent hemispheric asymmetry through the whole modelled period. Our results indicate that, although the overall VSLBr-driven ozone destruction is greatest during spring, the halogen-mediated (Halogx-Loss) ozone loss cycle in the mid-latitude lowermost stratosphere during winter is comparatively more efficient than the HOx cycle with respect to other seasons. Indeed, when VSLBr are considered, Halogx-Loss dominates wintertime lowermost stratospheric ozone loss at SH-MLs between 1985 and 2020, with a contribution of inter-halogen ClOx BrOx cycles to Halogx-Loss of 50 %. Within the tropics, a small (2:5 DU) and relatively constant (1 %) ozone depletion mediated by VSLBr is closely related to their fixed emissions throughout the modelled period. By including the VSLBr sources, the seasonal Halogx-Loss contribution to lowermost stratospheric ozone loss is practically dominated by the BrOx cycle, reflecting the low sensitivity of very short-lived (VSL) bromine to background halogen abundances to drive tropical stratospheric ozone depletion. We conclude that the link between biogenic bromine sources and seasonal changes in heterogeneous chlorine reactivation is a key feature for future projections of mid-latitude lowermost stratospheric ozone during the 21st century.This research has been supported by the European Research Council Executive Agency under the European Union’s Horizon 2020 Research and Innovation programme (grant no. ERC-2016-COG 726349 CLIMAHAL) and the Agencia Nacional de Promoción Científica y Técnica (grant no. ANPCYT PICT-2016-0714).European Geophysical SocietyEuropean CommissionAgencia Nacional de Promoción Científica y Tecnológica (Argentina)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120202021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/229387reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/726349http://dx.doi.org/10.5194/acp-20-8083-2020Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2293872026-05-22T06:33:51Z
score 15.812429

Similares en LA Referencia