Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya)
The role of sea ice in the Earth climate system is still under debate, although it is known to influence albedo, ocean circulation, and atmosphere-ocean heat and gas exchange. Here we present a reconstruction of 1950 to 1998AD sea ice in the Laptev Sea based on the Akademii Nauk ice core (Severnaya...
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Language: | English |
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Online Access: | http://hdl.handle.net/10278/3665335 https://doi.org/10.5194/tc-10-245-2016 |
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ftuniveneziairis:oai:iris.unive.it:10278/3665335 2024-04-14T08:00:27+00:00 Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) Spolaor, Andrea VARIN, Cristiano KIRCHGEORG, TORBEN VALLELONGA, PAUL TRAVIS Opel, T. Mcconnell, J. R. Maselli, O. J. Spreen, G. Fritzsche, D. Saiz Lopez, A. Spolaor, Andrea Opel, T. Mcconnell, J. R. Maselli, O. J. Spreen, G. Varin, Cristiano Kirchgeorg, Torben Fritzsche, D. Saiz Lopez, A. Vallelonga, PAUL TRAVIS 2016 http://hdl.handle.net/10278/3665335 https://doi.org/10.5194/tc-10-245-2016 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000377602600015 volume:10 issue:1 firstpage:245 lastpage:256 numberofpages:12 journal:THE CRYOSPHERE http://hdl.handle.net/10278/3665335 doi:10.5194/tc-10-245-2016 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84956652710 info:eu-repo/semantics/openAccess MASS-SPECTROMETRY IODINE EMISSIONS BOUNDARY-LAYER WEDDELL SEA NORDIC SEAS VARIABILITY ANTARCTICA BROMINE CLIMATE RECORD Settore CHIM/01 - Chimica Analitica info:eu-repo/semantics/article 2016 ftuniveneziairis https://doi.org/10.5194/tc-10-245-2016 2024-03-21T18:04:51Z The role of sea ice in the Earth climate system is still under debate, although it is known to influence albedo, ocean circulation, and atmosphere-ocean heat and gas exchange. Here we present a reconstruction of 1950 to 1998AD sea ice in the Laptev Sea based on the Akademii Nauk ice core (Severnaya Zemlya, Russian Arctic). The chemistry of halogens bromine (Br) and iodine (I) is strongly active and influenced by sea ice dynamics, in terms of physical, chemical and biological process. Bromine reacts on the sea ice surface in autocatalyzing "bromine explosion" events, causing an enrichment of the Br/Na ratio and hence a bromine excess (Br-exc) in snow compared to that in seawater. Iodine is suggested to be emitted from algal communities growing under sea ice. The results suggest a connection between Br-exc and spring sea ice area, as well as a connection between iodine concentration and summer sea ice area. The correlation coefficients obtained between Br-exc and spring sea ice (r = 0.44) as well as between iodine and summer sea ice (r = 0.50) for the Laptev Sea suggest that these two halogens could become good candidates for extended reconstructions of past sea ice changes in the Arctic. Article in Journal/Newspaper albedo Antarc* Antarctica Arctic ice core laptev Laptev Sea Nordic Seas Sea ice Severnaya Zemlya Weddell Sea Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Arctic Weddell Sea Laptev Sea Weddell Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) The Cryosphere 10 1 245 256 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
MASS-SPECTROMETRY IODINE EMISSIONS BOUNDARY-LAYER WEDDELL SEA NORDIC SEAS VARIABILITY ANTARCTICA BROMINE CLIMATE RECORD Settore CHIM/01 - Chimica Analitica |
spellingShingle |
MASS-SPECTROMETRY IODINE EMISSIONS BOUNDARY-LAYER WEDDELL SEA NORDIC SEAS VARIABILITY ANTARCTICA BROMINE CLIMATE RECORD Settore CHIM/01 - Chimica Analitica Spolaor, Andrea VARIN, Cristiano KIRCHGEORG, TORBEN VALLELONGA, PAUL TRAVIS Opel, T. Mcconnell, J. R. Maselli, O. J. Spreen, G. Fritzsche, D. Saiz Lopez, A. Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) |
topic_facet |
MASS-SPECTROMETRY IODINE EMISSIONS BOUNDARY-LAYER WEDDELL SEA NORDIC SEAS VARIABILITY ANTARCTICA BROMINE CLIMATE RECORD Settore CHIM/01 - Chimica Analitica |
description |
The role of sea ice in the Earth climate system is still under debate, although it is known to influence albedo, ocean circulation, and atmosphere-ocean heat and gas exchange. Here we present a reconstruction of 1950 to 1998AD sea ice in the Laptev Sea based on the Akademii Nauk ice core (Severnaya Zemlya, Russian Arctic). The chemistry of halogens bromine (Br) and iodine (I) is strongly active and influenced by sea ice dynamics, in terms of physical, chemical and biological process. Bromine reacts on the sea ice surface in autocatalyzing "bromine explosion" events, causing an enrichment of the Br/Na ratio and hence a bromine excess (Br-exc) in snow compared to that in seawater. Iodine is suggested to be emitted from algal communities growing under sea ice. The results suggest a connection between Br-exc and spring sea ice area, as well as a connection between iodine concentration and summer sea ice area. The correlation coefficients obtained between Br-exc and spring sea ice (r = 0.44) as well as between iodine and summer sea ice (r = 0.50) for the Laptev Sea suggest that these two halogens could become good candidates for extended reconstructions of past sea ice changes in the Arctic. |
author2 |
Spolaor, Andrea Opel, T. Mcconnell, J. R. Maselli, O. J. Spreen, G. Varin, Cristiano Kirchgeorg, Torben Fritzsche, D. Saiz Lopez, A. Vallelonga, PAUL TRAVIS |
format |
Article in Journal/Newspaper |
author |
Spolaor, Andrea VARIN, Cristiano KIRCHGEORG, TORBEN VALLELONGA, PAUL TRAVIS Opel, T. Mcconnell, J. R. Maselli, O. J. Spreen, G. Fritzsche, D. Saiz Lopez, A. |
author_facet |
Spolaor, Andrea VARIN, Cristiano KIRCHGEORG, TORBEN VALLELONGA, PAUL TRAVIS Opel, T. Mcconnell, J. R. Maselli, O. J. Spreen, G. Fritzsche, D. Saiz Lopez, A. |
author_sort |
Spolaor, Andrea |
title |
Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) |
title_short |
Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) |
title_full |
Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) |
title_fullStr |
Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) |
title_full_unstemmed |
Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) |
title_sort |
halogen-based reconstruction of russian arctic sea ice area from the akademii nauk ice core (severnaya zemlya) |
publishDate |
2016 |
url |
http://hdl.handle.net/10278/3665335 https://doi.org/10.5194/tc-10-245-2016 |
long_lat |
ENVELOPE(98.000,98.000,79.500,79.500) |
geographic |
Arctic Weddell Sea Laptev Sea Weddell Severnaya Zemlya |
geographic_facet |
Arctic Weddell Sea Laptev Sea Weddell Severnaya Zemlya |
genre |
albedo Antarc* Antarctica Arctic ice core laptev Laptev Sea Nordic Seas Sea ice Severnaya Zemlya Weddell Sea |
genre_facet |
albedo Antarc* Antarctica Arctic ice core laptev Laptev Sea Nordic Seas Sea ice Severnaya Zemlya Weddell Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000377602600015 volume:10 issue:1 firstpage:245 lastpage:256 numberofpages:12 journal:THE CRYOSPHERE http://hdl.handle.net/10278/3665335 doi:10.5194/tc-10-245-2016 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84956652710 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-245-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
1 |
container_start_page |
245 |
op_container_end_page |
256 |
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1796300689207459840 |