Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions

12 pags., 5 figs., 2 tabs.

Detalles Bibliográficos
Autores: Scoto, Federico, Maffezzoli, Niccolò, Osman, Matthew B., Cuevas, Carlos A., Vallelonga, Paul, Matoba, Sumito, Iizuka, Yoshinori, Gagliardi, Alessandro, Varin, Cristiano, Burgay, François, Pappaccogli, Gianluca, McConnell, Joseph R., Chellman, Nathan, Barbante, Carlo, Saiz-Lopez, A., Spolaor, Andrea
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/371492
Acceso en línea:http://hdl.handle.net/10261/371492
https://api.elsevier.com/content/abstract/scopus_id/85207302972
Access Level:acceso abierto
Palabra clave:Arctic
Bromine
Paleoclimate
Proxy calibration
Sea ice reconstructions
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spelling Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions Scoto, Federico Maffezzoli, Niccolò Osman, Matthew B. Cuevas, Carlos A. Vallelonga, Paul Matoba, Sumito Iizuka, Yoshinori Gagliardi, Alessandro Varin, Cristiano Burgay, François Pappaccogli, Gianluca McConnell, Joseph R. Chellman, Nathan Barbante, Carlo Saiz-Lopez, A. Spolaor, Andrea Arctic Bromine Paleoclimate Proxy calibration Sea ice reconstructions 12 pags., 5 figs., 2 tabs. Bromine in ice cores has been proposed as a qualitative sea ice proxy to produce sea ice reconstructions for the polar regions. Here we report the first statistical validation of this proxy with satellite sea ice observations by combining bromine enrichment (with respect to seawater, Brenr) records from three Greenlandic ice cores (SIGMA-A, NU and RECAP) with satellite sea ice imagery, over three decades. We find that during the 1984-2016 satellite-era, ice core Brenr values are significantly correlated with first-year sea ice formed in the Baffin Bay and Labrador Sea supporting that the gas-phase bromine enrichment processes, preferentially occurring over the sea ice surface, are the main driver for the Brenr signal in ice cores. Moreover, in assessing Brenr's capability to record historical sea ice variability, we compare 20th-century Arctic Sea ice historical and proxy records with our reconstructions, based on an autoregressive-moving-average (ARMA) model, finding overall good agreement. While further enhancements are warranted, including site-specific calibrations and a comprehensive investigation into bromine transport-related concerns, this study presents a new method to quantitatively reconstruct past seasonal sea ice variability through bromine enrichment in ice cores. The SIGMA-A ice core processing and transportation was partly supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Numbers JP18H05292, and the Arctic Challenge for Sustainability II Program (ArCS II: JPMXD1420318865). Funding for retrieval and analysis of the NU ice core was provided by the US National Science Foundation (NSF) Arctic System Science Program award OPP-1205196 and ARC-1205062. Geospatial support for this work was provided by the Polar Geospatial Center under NSF-OPP awards 1043681 and 1559691. The RECAP ice coring effort was financed by the Danish Research Council through a Sapere Aude grant, the NSF through the Division of Polar Programs, the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, and the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement 610055 through the Ice2Ice project and the Early Human Impact project (267696). This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 689443 via project iCUPE (Integrative and Comprehensive Understanding on Polar Environments). Peer reviewed Elsevier http://hdl.handle.net/10261/371492 https://api.elsevier.com/content/abstract/scopus_id/85207302972
title Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions
spellingShingle Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions
Scoto, Federico
Arctic
Bromine
Paleoclimate
Proxy calibration
Sea ice reconstructions
title_short Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions
title_full Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions
title_fullStr Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions
title_full_unstemmed Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions
title_sort Calibration of Arctic ice core bromine enrichment records for past sea ice reconstructions
author Scoto, Federico
author_facet Scoto, Federico
Maffezzoli, Niccolò
Osman, Matthew B.
Cuevas, Carlos A.
Vallelonga, Paul
Matoba, Sumito
Iizuka, Yoshinori
Gagliardi, Alessandro
Varin, Cristiano
Burgay, François
Pappaccogli, Gianluca
McConnell, Joseph R.
Chellman, Nathan
Barbante, Carlo
Saiz-Lopez, A.
Spolaor, Andrea
author_role author
author2 Maffezzoli, Niccolò
Osman, Matthew B.
Cuevas, Carlos A.
Vallelonga, Paul
Matoba, Sumito
Iizuka, Yoshinori
Gagliardi, Alessandro
Varin, Cristiano
Burgay, François
Pappaccogli, Gianluca
McConnell, Joseph R.
Chellman, Nathan
Barbante, Carlo
Saiz-Lopez, A.
Spolaor, Andrea
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
topic Arctic
Bromine
Paleoclimate
Proxy calibration
Sea ice reconstructions
topic_facet Arctic
Bromine
Paleoclimate
Proxy calibration
Sea ice reconstructions
description 12 pags., 5 figs., 2 tabs.
publishDate 2024
format article
status_str publishedVersion
url http://hdl.handle.net/10261/371492
https://api.elsevier.com/content/abstract/scopus_id/85207302972
eu_rights_str_mv openAccess
publisher Elsevier
institution Consejo Superior de Investigaciones Científicas (CSIC)
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
_version_ 1878433722207830016
publishDateSort 2024
author_browse Barbante, Carlo
Burgay, François
Chellman, Nathan
Cuevas, Carlos A.
Gagliardi, Alessandro
Iizuka, Yoshinori
Maffezzoli, Niccolò
Matoba, Sumito
McConnell, Joseph R.
Osman, Matthew B.
Pappaccogli, Gianluca
Saiz-Lopez, A.
Scoto, Federico
Spolaor, Andrea
Vallelonga, Paul
Varin, Cristiano
publisherStr Elsevier
score 6,924472

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