Sea-ice reconstructions from bromine and iodine in ice cores
As the intricacies of paleoclimate dynamics are explored, it is becoming understood that sea-ice variability can instigate, or contribute to, climate change instabilities commonly described as "tipping points". Compared to ice sheets and circulating ocean currents, sea-ice is ephemeral and...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , |
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2021
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Online Access: | https://curis.ku.dk/portal/da/publications/seaice-reconstructions-from-bromine-and-iodine-in-ice-cores(85861b53-b0c7-4206-a422-fe0cdcabb3a1).html https://doi.org/10.1016/j.quascirev.2021.107133 https://curis.ku.dk/ws/files/280058052/1_s2.0_S0277379121003401_main.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/85861b53-b0c7-4206-a422-fe0cdcabb3a1 2024-06-09T07:39:52+00:00 Sea-ice reconstructions from bromine and iodine in ice cores Vallelonga, Paul Maffezzoli, Niccolo Saiz-Lopez, Alfonso Scoto, Federico Kjaer, Helle Astrid Spolaor, Andrea 2021-10-01 application/pdf https://curis.ku.dk/portal/da/publications/seaice-reconstructions-from-bromine-and-iodine-in-ice-cores(85861b53-b0c7-4206-a422-fe0cdcabb3a1).html https://doi.org/10.1016/j.quascirev.2021.107133 https://curis.ku.dk/ws/files/280058052/1_s2.0_S0277379121003401_main.pdf eng eng info:eu-repo/semantics/openAccess Vallelonga , P , Maffezzoli , N , Saiz-Lopez , A , Scoto , F , Kjaer , H A & Spolaor , A 2021 , ' Sea-ice reconstructions from bromine and iodine in ice cores ' , Quaternary Science Reviews , vol. 269 , 107133 . https://doi.org/10.1016/j.quascirev.2021.107133 Halogen Ice core Bromine Iodine Sea-ice Sea-ice extent Sea-ice reconstruction Antarctica Southern ocean Greenland Svalbard Severnaya Zemlya Nordic seas ATMOSPHERIC BOUNDARY-LAYER ABRUPT CLIMATE-CHANGE SOUTHERN-OCEAN LAW DOME METHANESULFONIC-ACID SNOW ACCUMULATION TALOS DOME AEROSOL COMPOSITION VOLCANIC-ERUPTIONS HALOGEN DEPOSITION article 2021 ftcopenhagenunip https://doi.org/10.1016/j.quascirev.2021.107133 2024-05-16T11:29:21Z As the intricacies of paleoclimate dynamics are explored, it is becoming understood that sea-ice variability can instigate, or contribute to, climate change instabilities commonly described as "tipping points". Compared to ice sheets and circulating ocean currents, sea-ice is ephemeral and continentalscale changes to sea ice cover occur seasonally. Sea-ice greatly influences polar albedo, atmosphere-ocean gas exchange and vertical mixing of polar ocean masses. Major changes in sea ice distribution and thickness have been invoked as drivers of deglaciations as well as stadial climate variability described in Greenland climate records as "Dansgaard-Oeschger" cycles and described in Antarctic climate records as "Antarctic Isotopic Maxima". The role of halogens in polar atmospheric chemistry has been studied intensively over the past few decades. This research has been driven by the role of bromine, primarily as gas-phase bromine monoxide (BrO), which exerts a key control on polar tropospheric ozone concentrations. Initial findings led to the discovery of boundary-layer self-catalyzing heterogeneous bromine reactions fed by sunlight and ozone, known as bromine explosions. First-year sea-ice and blowing snow have been identified as key components for this heterogeneous bromine recycling in the polar boundary layer. This understanding of polar halogen chemistry - supported by an expanding body of observations and modeling - has formed the basis for investigating quantitative links between halogen concentrations in the polar atmospheric boundary layer and sea-ice presence and/or extent. Despite the clear importance of sea-ice in paleoclimate research, the ice core community lacks a conservative and quantitative proxy for sea-ice extent. The most commonly applied proxy, methanesulphonic acid (MSA), is volatile and has not been demonstrated reliably for ice core records extending beyond the last few centuries. Sodium has also been applied to reconstruct sea-ice extent in a semi-quantitative manner although the effects of ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland ice core Nordic Seas Sea ice Severnaya Zemlya Southern Ocean Svalbard University of Copenhagen: Research Antarctic Greenland Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Southern Ocean Svalbard Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Quaternary Science Reviews 269 107133 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Halogen Ice core Bromine Iodine Sea-ice Sea-ice extent Sea-ice reconstruction Antarctica Southern ocean Greenland Svalbard Severnaya Zemlya Nordic seas ATMOSPHERIC BOUNDARY-LAYER ABRUPT CLIMATE-CHANGE SOUTHERN-OCEAN LAW DOME METHANESULFONIC-ACID SNOW ACCUMULATION TALOS DOME AEROSOL COMPOSITION VOLCANIC-ERUPTIONS HALOGEN DEPOSITION |
spellingShingle |
Halogen Ice core Bromine Iodine Sea-ice Sea-ice extent Sea-ice reconstruction Antarctica Southern ocean Greenland Svalbard Severnaya Zemlya Nordic seas ATMOSPHERIC BOUNDARY-LAYER ABRUPT CLIMATE-CHANGE SOUTHERN-OCEAN LAW DOME METHANESULFONIC-ACID SNOW ACCUMULATION TALOS DOME AEROSOL COMPOSITION VOLCANIC-ERUPTIONS HALOGEN DEPOSITION Vallelonga, Paul Maffezzoli, Niccolo Saiz-Lopez, Alfonso Scoto, Federico Kjaer, Helle Astrid Spolaor, Andrea Sea-ice reconstructions from bromine and iodine in ice cores |
topic_facet |
Halogen Ice core Bromine Iodine Sea-ice Sea-ice extent Sea-ice reconstruction Antarctica Southern ocean Greenland Svalbard Severnaya Zemlya Nordic seas ATMOSPHERIC BOUNDARY-LAYER ABRUPT CLIMATE-CHANGE SOUTHERN-OCEAN LAW DOME METHANESULFONIC-ACID SNOW ACCUMULATION TALOS DOME AEROSOL COMPOSITION VOLCANIC-ERUPTIONS HALOGEN DEPOSITION |
description |
As the intricacies of paleoclimate dynamics are explored, it is becoming understood that sea-ice variability can instigate, or contribute to, climate change instabilities commonly described as "tipping points". Compared to ice sheets and circulating ocean currents, sea-ice is ephemeral and continentalscale changes to sea ice cover occur seasonally. Sea-ice greatly influences polar albedo, atmosphere-ocean gas exchange and vertical mixing of polar ocean masses. Major changes in sea ice distribution and thickness have been invoked as drivers of deglaciations as well as stadial climate variability described in Greenland climate records as "Dansgaard-Oeschger" cycles and described in Antarctic climate records as "Antarctic Isotopic Maxima". The role of halogens in polar atmospheric chemistry has been studied intensively over the past few decades. This research has been driven by the role of bromine, primarily as gas-phase bromine monoxide (BrO), which exerts a key control on polar tropospheric ozone concentrations. Initial findings led to the discovery of boundary-layer self-catalyzing heterogeneous bromine reactions fed by sunlight and ozone, known as bromine explosions. First-year sea-ice and blowing snow have been identified as key components for this heterogeneous bromine recycling in the polar boundary layer. This understanding of polar halogen chemistry - supported by an expanding body of observations and modeling - has formed the basis for investigating quantitative links between halogen concentrations in the polar atmospheric boundary layer and sea-ice presence and/or extent. Despite the clear importance of sea-ice in paleoclimate research, the ice core community lacks a conservative and quantitative proxy for sea-ice extent. The most commonly applied proxy, methanesulphonic acid (MSA), is volatile and has not been demonstrated reliably for ice core records extending beyond the last few centuries. Sodium has also been applied to reconstruct sea-ice extent in a semi-quantitative manner although the effects of ... |
format |
Article in Journal/Newspaper |
author |
Vallelonga, Paul Maffezzoli, Niccolo Saiz-Lopez, Alfonso Scoto, Federico Kjaer, Helle Astrid Spolaor, Andrea |
author_facet |
Vallelonga, Paul Maffezzoli, Niccolo Saiz-Lopez, Alfonso Scoto, Federico Kjaer, Helle Astrid Spolaor, Andrea |
author_sort |
Vallelonga, Paul |
title |
Sea-ice reconstructions from bromine and iodine in ice cores |
title_short |
Sea-ice reconstructions from bromine and iodine in ice cores |
title_full |
Sea-ice reconstructions from bromine and iodine in ice cores |
title_fullStr |
Sea-ice reconstructions from bromine and iodine in ice cores |
title_full_unstemmed |
Sea-ice reconstructions from bromine and iodine in ice cores |
title_sort |
sea-ice reconstructions from bromine and iodine in ice cores |
publishDate |
2021 |
url |
https://curis.ku.dk/portal/da/publications/seaice-reconstructions-from-bromine-and-iodine-in-ice-cores(85861b53-b0c7-4206-a422-fe0cdcabb3a1).html https://doi.org/10.1016/j.quascirev.2021.107133 https://curis.ku.dk/ws/files/280058052/1_s2.0_S0277379121003401_main.pdf |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic Greenland Law Dome Severnaya Zemlya Southern Ocean Svalbard Talos Dome |
geographic_facet |
Antarctic Greenland Law Dome Severnaya Zemlya Southern Ocean Svalbard Talos Dome |
genre |
Antarc* Antarctic Antarctica Greenland ice core Nordic Seas Sea ice Severnaya Zemlya Southern Ocean Svalbard |
genre_facet |
Antarc* Antarctic Antarctica Greenland ice core Nordic Seas Sea ice Severnaya Zemlya Southern Ocean Svalbard |
op_source |
Vallelonga , P , Maffezzoli , N , Saiz-Lopez , A , Scoto , F , Kjaer , H A & Spolaor , A 2021 , ' Sea-ice reconstructions from bromine and iodine in ice cores ' , Quaternary Science Reviews , vol. 269 , 107133 . https://doi.org/10.1016/j.quascirev.2021.107133 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2021.107133 |
container_title |
Quaternary Science Reviews |
container_volume |
269 |
container_start_page |
107133 |
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1801382645245935616 |