High resolution arctic iodine variability since the last glacial termination

Autores
Segato, Delia; Spolaor, Andrea; Corella, Juan Pablo; Cuevas, Carlos Alberto; Burgay, François; Fernandez, Rafael Pedro; Turetta, Clara; Cairns, Warren; Kjær, Helle Astrid; Spagnesi, Azzurra; Lee, Khanghyun; Erhardt, Tobias; Jensen, Camilla M.; Zeppenfeld, Chantal; Barbante, Carlo; Saiz López, Alfonso
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Tropospheric iodine plays a key role in ozone depletion and new particle formation. Understanding how iodine responds to climatic shifts is crucial for predicting future atmospheric composition. Here, we present high-resolution iodine fluxes in the EGRIP (East GReenland Ice Core Project) ice core in central Greenland spanning the last 15.7 kyr. By integrating these data with complementary proxies from other ice and marine sediment cores, we explore both the temporal and spatial patterns of iodine deposition across the Greenland ice sheet. We find lower iodine fluxes at EGRIP compared to RECAP and NEEM ice cores over the last 15.7 kyr, explained by the lower efficiency of iodine transport to the interior of the ice sheet. Our results show that during the cold periods of the Last Glacial Termination (15.7–11.7 kyr before present), iodine fluxes at EGRIP were higher than during the Holocene, likely due to enhanced long-range transport of iodine adsorbed onto dust and sea-salt aerosols under stronger glacial wind regimes. In contrast, during the Holocene, the sources and transport pathways of iodine shifted to marine sources. We infer that iodine was increasingly emitted from the expanded seasonal sea ice area and biologically active subpolar North Atlantic waters, though overall fluxes at EGRIP were lower than during the glacial period, reflecting the reduction in long-range transport. After rising until 5 kyr before present, iodine fluxes declined throughout the Neoglacial, in concomitance with regional cooling, increased sea ice extent, and reduced ocean productivity.
Fil: Segato, Delia. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Spolaor, Andrea. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Corella, Juan Pablo. Consejo Superior de Investigaciones Científicas; España
Fil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Científicas; España
Fil: Burgay, François. Universita' Ca' Foscari Di Venezia; Italia. Universidad de Basilea; Suiza
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. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Turetta, Clara. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Cairns, Warren. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Kjær, Helle Astrid. Universidad de Copenhagen; Dinamarca
Fil: Spagnesi, Azzurra. Universita' Ca' Foscari Di Venezia; Italia
Fil: Lee, Khanghyun. Korea Polar Research Institute; Corea del Sur
Fil: Erhardt, Tobias. Goethe Universitat Frankfurt; Alemania. University of Bern; Suiza
Fil: Jensen, Camilla M.. University of Bern; Suiza
Fil: Zeppenfeld, Chantal. University of Bern; Suiza
Fil: Barbante, Carlo. Universita' Ca' Foscari Di Venezia; Italia. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia
Fil: Saiz López, Alfonso. Consejo Superior de Investigaciones Científicas; España
Materia
Arctic Ioding
EGRIP ice-core
Last Glacial Termination
Polar Chemistry-Climate
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:11336/291412
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/291412
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling High resolution arctic iodine variability since the last glacial terminationSegato, DeliaSpolaor, AndreaCorella, Juan PabloCuevas, Carlos AlbertoBurgay, FrançoisFernandez, Rafael PedroTuretta, ClaraCairns, WarrenKjær, Helle AstridSpagnesi, AzzurraLee, KhanghyunErhardt, TobiasJensen, Camilla M.Zeppenfeld, ChantalBarbante, CarloSaiz López, AlfonsoArctic IodingEGRIP ice-coreLast Glacial TerminationPolar Chemistry-Climatehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Tropospheric iodine plays a key role in ozone depletion and new particle formation. Understanding how iodine responds to climatic shifts is crucial for predicting future atmospheric composition. Here, we present high-resolution iodine fluxes in the EGRIP (East GReenland Ice Core Project) ice core in central Greenland spanning the last 15.7 kyr. By integrating these data with complementary proxies from other ice and marine sediment cores, we explore both the temporal and spatial patterns of iodine deposition across the Greenland ice sheet. We find lower iodine fluxes at EGRIP compared to RECAP and NEEM ice cores over the last 15.7 kyr, explained by the lower efficiency of iodine transport to the interior of the ice sheet. Our results show that during the cold periods of the Last Glacial Termination (15.7–11.7 kyr before present), iodine fluxes at EGRIP were higher than during the Holocene, likely due to enhanced long-range transport of iodine adsorbed onto dust and sea-salt aerosols under stronger glacial wind regimes. In contrast, during the Holocene, the sources and transport pathways of iodine shifted to marine sources. We infer that iodine was increasingly emitted from the expanded seasonal sea ice area and biologically active subpolar North Atlantic waters, though overall fluxes at EGRIP were lower than during the glacial period, reflecting the reduction in long-range transport. After rising until 5 kyr before present, iodine fluxes declined throughout the Neoglacial, in concomitance with regional cooling, increased sea ice extent, and reduced ocean productivity.Fil: Segato, Delia. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; ItaliaFil: Spolaor, Andrea. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; ItaliaFil: Corella, Juan Pablo. Consejo Superior de Investigaciones Científicas; EspañaFil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Científicas; EspañaFil: Burgay, François. Universita' Ca' Foscari Di Venezia; Italia. Universidad de Basilea; SuizaFil: 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. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Turetta, Clara. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; ItaliaFil: Cairns, Warren. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; ItaliaFil: Kjær, Helle Astrid. Universidad de Copenhagen; DinamarcaFil: Spagnesi, Azzurra. Universita' Ca' Foscari Di Venezia; ItaliaFil: Lee, Khanghyun. Korea Polar Research Institute; Corea del SurFil: Erhardt, Tobias. Goethe Universitat Frankfurt; Alemania. University of Bern; SuizaFil: Jensen, Camilla M.. University of Bern; SuizaFil: Zeppenfeld, Chantal. University of Bern; SuizaFil: Barbante, Carlo. Universita' Ca' Foscari Di Venezia; Italia. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; ItaliaFil: Saiz López, Alfonso. Consejo Superior de Investigaciones Científicas; EspañaAmerican Geophysical Union2025-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/291412Segato, Delia; Spolaor, Andrea; Corella, Juan Pablo; Cuevas, Carlos Alberto; Burgay, François; et al.; High resolution arctic iodine variability since the last glacial termination; American Geophysical Union; Journal of Geophysical Research; 130; 24; 12-2025; 1-132169-897X2169-8996CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JD044552info:eu-repo/semantics/altIdentifier/doi/10.1029/2025JD044552info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:38:32Zoai:ri.conicet.gov.ar:11336/291412instacron: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:34982026-08-25 14:38:32.697CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv High resolution arctic iodine variability since the last glacial termination
title High resolution arctic iodine variability since the last glacial termination
spellingShingle High resolution arctic iodine variability since the last glacial termination
Segato, Delia
Arctic Ioding
EGRIP ice-core
Last Glacial Termination
Polar Chemistry-Climate
title_short High resolution arctic iodine variability since the last glacial termination
title_full High resolution arctic iodine variability since the last glacial termination
title_fullStr High resolution arctic iodine variability since the last glacial termination
title_full_unstemmed High resolution arctic iodine variability since the last glacial termination
title_sort High resolution arctic iodine variability since the last glacial termination
dc.creator.none.fl_str_mv Segato, Delia
Spolaor, Andrea
Corella, Juan Pablo
Cuevas, Carlos Alberto
Burgay, François
Fernandez, Rafael Pedro
Turetta, Clara
Cairns, Warren
Kjær, Helle Astrid
Spagnesi, Azzurra
Lee, Khanghyun
Erhardt, Tobias
Jensen, Camilla M.
Zeppenfeld, Chantal
Barbante, Carlo
Saiz López, Alfonso
author Segato, Delia
author_facet Segato, Delia
Spolaor, Andrea
Corella, Juan Pablo
Cuevas, Carlos Alberto
Burgay, François
Fernandez, Rafael Pedro
Turetta, Clara
Cairns, Warren
Kjær, Helle Astrid
Spagnesi, Azzurra
Lee, Khanghyun
Erhardt, Tobias
Jensen, Camilla M.
Zeppenfeld, Chantal
Barbante, Carlo
Saiz López, Alfonso
author_role author
author2 Spolaor, Andrea
Corella, Juan Pablo
Cuevas, Carlos Alberto
Burgay, François
Fernandez, Rafael Pedro
Turetta, Clara
Cairns, Warren
Kjær, Helle Astrid
Spagnesi, Azzurra
Lee, Khanghyun
Erhardt, Tobias
Jensen, Camilla M.
Zeppenfeld, Chantal
Barbante, Carlo
Saiz López, Alfonso
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Arctic Ioding
EGRIP ice-core
Last Glacial Termination
Polar Chemistry-Climate
topic Arctic Ioding
EGRIP ice-core
Last Glacial Termination
Polar Chemistry-Climate
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Tropospheric iodine plays a key role in ozone depletion and new particle formation. Understanding how iodine responds to climatic shifts is crucial for predicting future atmospheric composition. Here, we present high-resolution iodine fluxes in the EGRIP (East GReenland Ice Core Project) ice core in central Greenland spanning the last 15.7 kyr. By integrating these data with complementary proxies from other ice and marine sediment cores, we explore both the temporal and spatial patterns of iodine deposition across the Greenland ice sheet. We find lower iodine fluxes at EGRIP compared to RECAP and NEEM ice cores over the last 15.7 kyr, explained by the lower efficiency of iodine transport to the interior of the ice sheet. Our results show that during the cold periods of the Last Glacial Termination (15.7–11.7 kyr before present), iodine fluxes at EGRIP were higher than during the Holocene, likely due to enhanced long-range transport of iodine adsorbed onto dust and sea-salt aerosols under stronger glacial wind regimes. In contrast, during the Holocene, the sources and transport pathways of iodine shifted to marine sources. We infer that iodine was increasingly emitted from the expanded seasonal sea ice area and biologically active subpolar North Atlantic waters, though overall fluxes at EGRIP were lower than during the glacial period, reflecting the reduction in long-range transport. After rising until 5 kyr before present, iodine fluxes declined throughout the Neoglacial, in concomitance with regional cooling, increased sea ice extent, and reduced ocean productivity.
Fil: Segato, Delia. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Spolaor, Andrea. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Corella, Juan Pablo. Consejo Superior de Investigaciones Científicas; España
Fil: Cuevas, Carlos Alberto. Consejo Superior de Investigaciones Científicas; España
Fil: Burgay, François. Universita' Ca' Foscari Di Venezia; Italia. Universidad de Basilea; Suiza
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. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Turetta, Clara. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Cairns, Warren. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia. Universita' Ca' Foscari Di Venezia; Italia
Fil: Kjær, Helle Astrid. Universidad de Copenhagen; Dinamarca
Fil: Spagnesi, Azzurra. Universita' Ca' Foscari Di Venezia; Italia
Fil: Lee, Khanghyun. Korea Polar Research Institute; Corea del Sur
Fil: Erhardt, Tobias. Goethe Universitat Frankfurt; Alemania. University of Bern; Suiza
Fil: Jensen, Camilla M.. University of Bern; Suiza
Fil: Zeppenfeld, Chantal. University of Bern; Suiza
Fil: Barbante, Carlo. Universita' Ca' Foscari Di Venezia; Italia. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia
Fil: Saiz López, Alfonso. Consejo Superior de Investigaciones Científicas; España
description Tropospheric iodine plays a key role in ozone depletion and new particle formation. Understanding how iodine responds to climatic shifts is crucial for predicting future atmospheric composition. Here, we present high-resolution iodine fluxes in the EGRIP (East GReenland Ice Core Project) ice core in central Greenland spanning the last 15.7 kyr. By integrating these data with complementary proxies from other ice and marine sediment cores, we explore both the temporal and spatial patterns of iodine deposition across the Greenland ice sheet. We find lower iodine fluxes at EGRIP compared to RECAP and NEEM ice cores over the last 15.7 kyr, explained by the lower efficiency of iodine transport to the interior of the ice sheet. Our results show that during the cold periods of the Last Glacial Termination (15.7–11.7 kyr before present), iodine fluxes at EGRIP were higher than during the Holocene, likely due to enhanced long-range transport of iodine adsorbed onto dust and sea-salt aerosols under stronger glacial wind regimes. In contrast, during the Holocene, the sources and transport pathways of iodine shifted to marine sources. We infer that iodine was increasingly emitted from the expanded seasonal sea ice area and biologically active subpolar North Atlantic waters, though overall fluxes at EGRIP were lower than during the glacial period, reflecting the reduction in long-range transport. After rising until 5 kyr before present, iodine fluxes declined throughout the Neoglacial, in concomitance with regional cooling, increased sea ice extent, and reduced ocean productivity.
publishDate 2025
dc.date.none.fl_str_mv 2025-12
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/11336/291412
Segato, Delia; Spolaor, Andrea; Corella, Juan Pablo; Cuevas, Carlos Alberto; Burgay, François; et al.; High resolution arctic iodine variability since the last glacial termination; American Geophysical Union; Journal of Geophysical Research; 130; 24; 12-2025; 1-13
2169-897X
2169-8996
CONICET Digital
CONICET
url http://hdl.handle.net/11336/291412
identifier_str_mv Segato, Delia; Spolaor, Andrea; Corella, Juan Pablo; Cuevas, Carlos Alberto; Burgay, François; et al.; High resolution arctic iodine variability since the last glacial termination; American Geophysical Union; Journal of Geophysical Research; 130; 24; 12-2025; 1-13
2169-897X
2169-8996
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JD044552
info:eu-repo/semantics/altIdentifier/doi/10.1029/2025JD044552
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 American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 13.24418

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