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...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Copernicus Publications
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/139829 https://doi.org/10.5194/tc-10-245-2016 |
id |
ftcsic:oai:digital.csic.es:10261/139829 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/139829 2024-02-11T09:54:56+01:00 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, Gunnar Varin, C. Kirchgeorg, T. Fritzsche, D. Saiz-Lopez, A. Vallelonga, P. 2016 http://hdl.handle.net/10261/139829 https://doi.org/10.5194/tc-10-245-2016 unknown Copernicus Publications http://www.the-cryosphere.net/10/245/2016 Sí doi:10.5194/tc-10-245-2016 issn: 1994-0424 Cryosphere 10: 245- 256 (2016) http://hdl.handle.net/10261/139829 open artículo http://purl.org/coar/resource_type/c_6501 2016 ftcsic https://doi.org/10.5194/tc-10-245-2016 2024-01-16T10:18:31Z 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) 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 Brexc and spring sea ice area, as well as a connection between iodine concentration and summer sea ice area. The correlation coefficients obtained between Br 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. This study contributes to the Eurasian Arctic Ice 4k project and was supported by the Deutsche Forschungs- gemeinschaft (grant OP 217/2-1 awarded to Thomas Opel). The drilling project on the Akademii Nauk ice cap was funded by the German Ministry of Education and Research (BMBF research project 03PL 027A). Analysis and interpretation of the Akademii Nauk ice core at the Desert Research Institute was funded by US National Science Foundation grant 1023672. The research leading to these results received funding from the European Research Council under the European Community’s Seventh Framework Programme (FP7/2007–2013)/ERC grant agreement no. 610055. We thank the University of Bremen, supported by the State of Bremen; the German Aerospace Center, DLR; and the European Space Agency for the satellite BrO imagines. Opel) Peer Reviewed Article in Journal/Newspaper albedo Arctic Ice cap ice core laptev Laptev Sea Sea ice Severnaya Zemlya Digital.CSIC (Spanish National Research Council) Arctic Laptev Sea Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) The Cryosphere 10 1 245 256 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
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) 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 Brexc and spring sea ice area, as well as a connection between iodine concentration and summer sea ice area. The correlation coefficients obtained between Br 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. This study contributes to the Eurasian Arctic Ice 4k project and was supported by the Deutsche Forschungs- gemeinschaft (grant OP 217/2-1 awarded to Thomas Opel). The drilling project on the Akademii Nauk ice cap was funded by the German Ministry of Education and Research (BMBF research project 03PL 027A). Analysis and interpretation of the Akademii Nauk ice core at the Desert Research Institute was funded by US National Science Foundation grant 1023672. The research leading to these results received funding from the European Research Council under the European Community’s Seventh Framework Programme (FP7/2007–2013)/ERC grant agreement no. 610055. We thank the University of Bremen, supported by the State of Bremen; the German Aerospace Center, DLR; and the European Space Agency for the satellite BrO imagines. Opel) Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Spolaor, A. Opel, T. McConnell, J. R. Maselli, O. J. Spreen, Gunnar Varin, C. Kirchgeorg, T. Fritzsche, D. Saiz-Lopez, A. Vallelonga, P. |
spellingShingle |
Spolaor, A. Opel, T. McConnell, J. R. Maselli, O. J. Spreen, Gunnar 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, Gunnar 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) |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
http://hdl.handle.net/10261/139829 https://doi.org/10.5194/tc-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 cap ice core laptev Laptev Sea Sea ice Severnaya Zemlya |
genre_facet |
albedo Arctic Ice cap ice core laptev Laptev Sea Sea ice Severnaya Zemlya |
op_relation |
http://www.the-cryosphere.net/10/245/2016 Sí doi:10.5194/tc-10-245-2016 issn: 1994-0424 Cryosphere 10: 245- 256 (2016) http://hdl.handle.net/10261/139829 |
op_rights |
open |
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_ |
1790609693681385472 |