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 1998 AD sea ice in the Laptev Sea based on the Akademii Nauk ice core (Severnaya...
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Online Access: | https://doi.org/10.5194/tc-10-245-2016 https://tc.copernicus.org/articles/10/245/2016/ |
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ftcopernicus:oai:publications.copernicus.org:tc30644 2023-05-15T13:11:21+02:00 Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) Spolaor, A. Opel, T. McConnell, J. R. Maselli, O. J. Spreen, G. Varin, C. Kirchgeorg, T. Fritzsche, D. Saiz-Lopez, A. Vallelonga, P. 2018-11-01 application/pdf https://doi.org/10.5194/tc-10-245-2016 https://tc.copernicus.org/articles/10/245/2016/ eng eng doi:10.5194/tc-10-245-2016 https://tc.copernicus.org/articles/10/245/2016/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-10-245-2016 2020-07-20T16:24:17Z 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 1998 AD 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. Text albedo Arctic ice core laptev Laptev Sea Sea ice Severnaya Zemlya Copernicus Publications: E-Journals Arctic Laptev Sea Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) The Cryosphere 10 1 245 256 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
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 1998 AD 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. |
format |
Text |
author |
Spolaor, A. Opel, T. McConnell, J. R. Maselli, O. J. Spreen, G. Varin, C. Kirchgeorg, T. Fritzsche, D. Saiz-Lopez, A. Vallelonga, P. |
spellingShingle |
Spolaor, A. Opel, T. McConnell, J. R. Maselli, O. J. Spreen, G. Varin, C. Kirchgeorg, T. Fritzsche, D. Saiz-Lopez, A. Vallelonga, P. Halogen-based reconstruction of Russian Arctic sea ice area from the Akademii Nauk ice core (Severnaya Zemlya) |
author_facet |
Spolaor, A. Opel, T. McConnell, J. R. Maselli, O. J. Spreen, G. Varin, C. Kirchgeorg, T. Fritzsche, D. Saiz-Lopez, A. Vallelonga, P. |
author_sort |
Spolaor, A. |
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 |
2018 |
url |
https://doi.org/10.5194/tc-10-245-2016 https://tc.copernicus.org/articles/10/245/2016/ |
long_lat |
ENVELOPE(98.000,98.000,79.500,79.500) |
geographic |
Arctic Laptev Sea Severnaya Zemlya |
geographic_facet |
Arctic Laptev Sea Severnaya Zemlya |
genre |
albedo Arctic ice core laptev Laptev Sea Sea ice Severnaya Zemlya |
genre_facet |
albedo Arctic ice core laptev Laptev Sea Sea ice Severnaya Zemlya |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-10-245-2016 https://tc.copernicus.org/articles/10/245/2016/ |
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 |
_version_ |
1766247053399162880 |