Holocene atmospheric iodine evolution over the North Atlantic
Atmospheric iodine chemistry has a large influence on the oxidizing capacity and associated radiative impacts in the troposphere. However, information on the evolution of past atmospheric iodine levels is restricted to the industrial period while its long-term natural variability remains unknown. Th...
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Online Access: | http://hdl.handle.net/10278/3724399 https://doi.org/10.5194/cp-15-2019-2019 https://cp.copernicus.org/articles/15/2019/2019/ |
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ftuniveneziairis:oai:iris.unive.it:10278/3724399 2024-04-14T08:07:58+00:00 Holocene atmospheric iodine evolution over the North Atlantic Corella J. P. Maffezzoli N. Alberto Cuevas C. Vallelonga P. Spolaor A. Cozzi G. Muller J. Vinther B. Barbante C. Astrid Kjaer H. Edwards R. Saiz-Lopez A. Corella, J. P. Maffezzoli, N. Alberto Cuevas, C. Vallelonga, P. Spolaor, A. Cozzi, G. Muller, J. Vinther, B. Barbante, C. Astrid Kjaer, H. Edwards, R. Saiz-Lopez, A. 2019 ELETTRONICO http://hdl.handle.net/10278/3724399 https://doi.org/10.5194/cp-15-2019-2019 https://cp.copernicus.org/articles/15/2019/2019/ eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000503452100001 volume:15 issue:6 firstpage:2019 lastpage:2030 numberofpages:12 journal:CLIMATE OF THE PAST http://hdl.handle.net/10278/3724399 doi:10.5194/cp-15-2019-2019 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85076799427 https://cp.copernicus.org/articles/15/2019/2019/ info:eu-repo/semantics/openAccess Settore CHIM/01 - Chimica Analitica Settore CHIM/12 - Chimica dell'Ambiente e dei Beni Culturali info:eu-repo/semantics/article 2019 ftuniveneziairis https://doi.org/10.5194/cp-15-2019-2019 2024-03-21T18:11:36Z Atmospheric iodine chemistry has a large influence on the oxidizing capacity and associated radiative impacts in the troposphere. However, information on the evolution of past atmospheric iodine levels is restricted to the industrial period while its long-term natural variability remains unknown. The current levels of iodine in the atmosphere are controlled by anthropogenic ozone deposition to the ocean surface. Here, using high-resolution geochemical measurements from coastal eastern Greenland ReCAP (REnland ice CAP project) ice core, we report the first record of atmospheric iodine variability in the North Atlantic during the Holocene (i.e., the last 11 700 years). Surprisingly, our results reveal that the highest iodine concentrations in the record were found during the Holocene Thermal Maximum (HTM; ∼ 11 500-5500 years before-present). These high iodine levels could be driven by marine primary productivity resulting in an Early Holocene "biological iodine explosion". The high and stable iodine levels during this past warm period are a useful observational constraint on projections of future changes in Arctic atmospheric composition and climate resulting from global warming. Article in Journal/Newspaper Arctic Global warming Greenland Ice cap ice core North Atlantic Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Arctic Greenland Renland ENVELOPE(-26.750,-26.750,71.200,71.200) Climate of the Past 15 6 2019 2030 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Settore CHIM/01 - Chimica Analitica Settore CHIM/12 - Chimica dell'Ambiente e dei Beni Culturali |
spellingShingle |
Settore CHIM/01 - Chimica Analitica Settore CHIM/12 - Chimica dell'Ambiente e dei Beni Culturali Corella J. P. Maffezzoli N. Alberto Cuevas C. Vallelonga P. Spolaor A. Cozzi G. Muller J. Vinther B. Barbante C. Astrid Kjaer H. Edwards R. Saiz-Lopez A. Holocene atmospheric iodine evolution over the North Atlantic |
topic_facet |
Settore CHIM/01 - Chimica Analitica Settore CHIM/12 - Chimica dell'Ambiente e dei Beni Culturali |
description |
Atmospheric iodine chemistry has a large influence on the oxidizing capacity and associated radiative impacts in the troposphere. However, information on the evolution of past atmospheric iodine levels is restricted to the industrial period while its long-term natural variability remains unknown. The current levels of iodine in the atmosphere are controlled by anthropogenic ozone deposition to the ocean surface. Here, using high-resolution geochemical measurements from coastal eastern Greenland ReCAP (REnland ice CAP project) ice core, we report the first record of atmospheric iodine variability in the North Atlantic during the Holocene (i.e., the last 11 700 years). Surprisingly, our results reveal that the highest iodine concentrations in the record were found during the Holocene Thermal Maximum (HTM; ∼ 11 500-5500 years before-present). These high iodine levels could be driven by marine primary productivity resulting in an Early Holocene "biological iodine explosion". The high and stable iodine levels during this past warm period are a useful observational constraint on projections of future changes in Arctic atmospheric composition and climate resulting from global warming. |
author2 |
Corella, J. P. Maffezzoli, N. Alberto Cuevas, C. Vallelonga, P. Spolaor, A. Cozzi, G. Muller, J. Vinther, B. Barbante, C. Astrid Kjaer, H. Edwards, R. Saiz-Lopez, A. |
format |
Article in Journal/Newspaper |
author |
Corella J. P. Maffezzoli N. Alberto Cuevas C. Vallelonga P. Spolaor A. Cozzi G. Muller J. Vinther B. Barbante C. Astrid Kjaer H. Edwards R. Saiz-Lopez A. |
author_facet |
Corella J. P. Maffezzoli N. Alberto Cuevas C. Vallelonga P. Spolaor A. Cozzi G. Muller J. Vinther B. Barbante C. Astrid Kjaer H. Edwards R. Saiz-Lopez A. |
author_sort |
Corella J. P. |
title |
Holocene atmospheric iodine evolution over the North Atlantic |
title_short |
Holocene atmospheric iodine evolution over the North Atlantic |
title_full |
Holocene atmospheric iodine evolution over the North Atlantic |
title_fullStr |
Holocene atmospheric iodine evolution over the North Atlantic |
title_full_unstemmed |
Holocene atmospheric iodine evolution over the North Atlantic |
title_sort |
holocene atmospheric iodine evolution over the north atlantic |
publishDate |
2019 |
url |
http://hdl.handle.net/10278/3724399 https://doi.org/10.5194/cp-15-2019-2019 https://cp.copernicus.org/articles/15/2019/2019/ |
long_lat |
ENVELOPE(-26.750,-26.750,71.200,71.200) |
geographic |
Arctic Greenland Renland |
geographic_facet |
Arctic Greenland Renland |
genre |
Arctic Global warming Greenland Ice cap ice core North Atlantic |
genre_facet |
Arctic Global warming Greenland Ice cap ice core North Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000503452100001 volume:15 issue:6 firstpage:2019 lastpage:2030 numberofpages:12 journal:CLIMATE OF THE PAST http://hdl.handle.net/10278/3724399 doi:10.5194/cp-15-2019-2019 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85076799427 https://cp.copernicus.org/articles/15/2019/2019/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-15-2019-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
6 |
container_start_page |
2019 |
op_container_end_page |
2030 |
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1796305400158486528 |