Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica
The Law Dome site is ideal for the evaluation of sea ice proxies due to its location near to the Antarctic coast, regular and high accumulation throughout the year, an absence of surface melting or remobilization, and minimal multiyear sea ice. We present records of bromine and iodine concentrations...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-13-171-2017 https://cp.copernicus.org/articles/13/171/2017/ |
id |
fttriple:oai:gotriple.eu:3SYQzKNMuDQPl6CgzB8_n |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:3SYQzKNMuDQPl6CgzB8_n 2023-05-15T14:02:27+02:00 Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica Vallelonga, Paul Maffezzoli, Niccolo Moy, Andrew D. Curran, Mark A. J. Vance, Tessa R. Edwards, Ross Hughes, Gwyn Barker, Emily Spreen, Gunnar Saiz-Lopez, Alfonso Corella, J. Pablo Cuevas, Carlos A. Spolaor, Andrea 2018-11-01 https://doi.org/10.5194/cp-13-171-2017 https://cp.copernicus.org/articles/13/171/2017/ en eng Copernicus Publications doi:10.5194/cp-13-171-2017 10670/1.yudvk7 1814-9324 1814-9332 https://cp.copernicus.org/articles/13/171/2017/ undefined Geographica Helvetica - geography eISSN: 1814-9332 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/cp-13-171-2017 2023-01-22T17:39:18Z The Law Dome site is ideal for the evaluation of sea ice proxies due to its location near to the Antarctic coast, regular and high accumulation throughout the year, an absence of surface melting or remobilization, and minimal multiyear sea ice. We present records of bromine and iodine concentrations and their enrichment beyond seawater compositions and compare these to satellite observations of first-year sea ice area in the 90–130° E sector of the Wilkes coast. Our findings support the results of previous studies of sea ice variability from Law Dome, indicating that Wilkes coast sea ice area is currently at its lowest level since the start of the 20th century. From the Law Dome DSS1213 firn core, 26 years of monthly deposition data indicate that the period of peak bromine enrichment is during austral spring–summer, from November to February. Results from a traverse along the lee (western) side of Law Dome show low levels of sodium and bromine deposition, with the greatest fluxes in the vicinity of the Law Dome summit. Finally, multidecadal variability in iodine enrichment appears well correlated to bromine enrichment, suggesting a common source of variability that may be related to the Interdecadal Pacific Oscillation (IPO). Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Sea ice Unknown Antarctic Austral East Antarctica Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Law Dome Summit ENVELOPE(112.833,112.833,-66.733,-66.733) Pacific The Antarctic Wilkes Coast ENVELOPE(133.000,133.000,-66.500,-66.500) Climate of the Past 13 2 171 184 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir Vallelonga, Paul Maffezzoli, Niccolo Moy, Andrew D. Curran, Mark A. J. Vance, Tessa R. Edwards, Ross Hughes, Gwyn Barker, Emily Spreen, Gunnar Saiz-Lopez, Alfonso Corella, J. Pablo Cuevas, Carlos A. Spolaor, Andrea Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica |
topic_facet |
geo envir |
description |
The Law Dome site is ideal for the evaluation of sea ice proxies due to its location near to the Antarctic coast, regular and high accumulation throughout the year, an absence of surface melting or remobilization, and minimal multiyear sea ice. We present records of bromine and iodine concentrations and their enrichment beyond seawater compositions and compare these to satellite observations of first-year sea ice area in the 90–130° E sector of the Wilkes coast. Our findings support the results of previous studies of sea ice variability from Law Dome, indicating that Wilkes coast sea ice area is currently at its lowest level since the start of the 20th century. From the Law Dome DSS1213 firn core, 26 years of monthly deposition data indicate that the period of peak bromine enrichment is during austral spring–summer, from November to February. Results from a traverse along the lee (western) side of Law Dome show low levels of sodium and bromine deposition, with the greatest fluxes in the vicinity of the Law Dome summit. Finally, multidecadal variability in iodine enrichment appears well correlated to bromine enrichment, suggesting a common source of variability that may be related to the Interdecadal Pacific Oscillation (IPO). |
format |
Article in Journal/Newspaper |
author |
Vallelonga, Paul Maffezzoli, Niccolo Moy, Andrew D. Curran, Mark A. J. Vance, Tessa R. Edwards, Ross Hughes, Gwyn Barker, Emily Spreen, Gunnar Saiz-Lopez, Alfonso Corella, J. Pablo Cuevas, Carlos A. Spolaor, Andrea |
author_facet |
Vallelonga, Paul Maffezzoli, Niccolo Moy, Andrew D. Curran, Mark A. J. Vance, Tessa R. Edwards, Ross Hughes, Gwyn Barker, Emily Spreen, Gunnar Saiz-Lopez, Alfonso Corella, J. Pablo Cuevas, Carlos A. Spolaor, Andrea |
author_sort |
Vallelonga, Paul |
title |
Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica |
title_short |
Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica |
title_full |
Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica |
title_fullStr |
Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica |
title_full_unstemmed |
Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica |
title_sort |
sea-ice-related halogen enrichment at law dome, coastal east antarctica |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-13-171-2017 https://cp.copernicus.org/articles/13/171/2017/ |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) ENVELOPE(112.833,112.833,-66.733,-66.733) ENVELOPE(133.000,133.000,-66.500,-66.500) |
geographic |
Antarctic Austral East Antarctica Law Dome Law Dome Summit Pacific The Antarctic Wilkes Coast |
geographic_facet |
Antarctic Austral East Antarctica Law Dome Law Dome Summit Pacific The Antarctic Wilkes Coast |
genre |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-13-171-2017 10670/1.yudvk7 1814-9324 1814-9332 https://cp.copernicus.org/articles/13/171/2017/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-13-171-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
2 |
container_start_page |
171 |
op_container_end_page |
184 |
_version_ |
1766272729696174080 |