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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fttriple:oai:gotriple.eu:oai:doaj.org/article:98662133177c48269b84a772aaa100c7 2023-05-15T15:05:33+02:00 Holocene atmospheric iodine evolution over the North Atlantic J. P. Corella N. Maffezzoli C. A. Cuevas P. Vallelonga A. Spolaor G. Cozzi J. Müller B. Vinther C. Barbante H. A. Kjær R. Edwards A. Saiz-Lopez 2019-12-01 https://doi.org/10.5194/cp-15-2019-2019 https://www.clim-past.net/15/2019/2019/cp-15-2019-2019.pdf https://doaj.org/article/98662133177c48269b84a772aaa100c7 en eng Copernicus Publications doi:10.5194/cp-15-2019-2019 1814-9324 1814-9332 https://www.clim-past.net/15/2019/2019/cp-15-2019-2019.pdf https://doaj.org/article/98662133177c48269b84a772aaa100c7 undefined Climate of the Past, Vol 15, Pp 2019-2030 (2019) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.5194/cp-15-2019-2019 2023-01-22T19:24:37Z 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 Unknown Arctic Greenland Renland ENVELOPE(-26.750,-26.750,71.200,71.200) Climate of the Past 15 6 2019 2030 |
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English |
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geo envir |
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geo envir J. P. Corella N. Maffezzoli C. A. Cuevas P. Vallelonga A. Spolaor G. Cozzi J. Müller B. Vinther C. Barbante H. A. Kjær R. Edwards A. Saiz-Lopez Holocene atmospheric iodine evolution over the North Atlantic |
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geo envir |
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. |
format |
Article in Journal/Newspaper |
author |
J. P. Corella N. Maffezzoli C. A. Cuevas P. Vallelonga A. Spolaor G. Cozzi J. Müller B. Vinther C. Barbante H. A. Kjær R. Edwards A. Saiz-Lopez |
author_facet |
J. P. Corella N. Maffezzoli C. A. Cuevas P. Vallelonga A. Spolaor G. Cozzi J. Müller B. Vinther C. Barbante H. A. Kjær R. Edwards A. Saiz-Lopez |
author_sort |
J. P. Corella |
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 |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/cp-15-2019-2019 https://www.clim-past.net/15/2019/2019/cp-15-2019-2019.pdf https://doaj.org/article/98662133177c48269b84a772aaa100c7 |
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_source |
Climate of the Past, Vol 15, Pp 2019-2030 (2019) |
op_relation |
doi:10.5194/cp-15-2019-2019 1814-9324 1814-9332 https://www.clim-past.net/15/2019/2019/cp-15-2019-2019.pdf https://doaj.org/article/98662133177c48269b84a772aaa100c7 |
op_rights |
undefined |
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 |
_version_ |
1766337235720863744 |