The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores
Methane sulphonic acid (MSA) in an ice core from Dolleman Island (70°35′S, 60°56′W) shows significantly high concentrations (typically 1-2 µm, but up to 5 µm) compared to values recorded in ice cores and in snowfall from elsewhere in Antarctica. MSA data from two other higher altitude Antarctic Peni...
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ftcdlib:qt4v41n77b 2023-05-15T14:01:41+02:00 The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores Mulvaney, Robert Pasteur, Elizabeth C Peel, David A Saltzman, Eric S Whung, Pai-Yei 295 - 303 1992-09-01 application/pdf http://www.escholarship.org/uc/item/4v41n77b english eng eScholarship, University of California qt4v41n77b http://www.escholarship.org/uc/item/4v41n77b Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Mulvaney, Robert; Pasteur, Elizabeth C; Peel, David A; Saltzman, Eric S; & Whung, Pai-Yei. (1992). The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores. Tellus B, 44(4), 295 - 303. doi:10.1034/j.1600-0889.1992.t01-2-00007.x. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/4v41n77b Physical Sciences and Mathematics dimethyl sulphide DMS ice core methane sulphonic acid non sea-salt sulphate sulphate article 1992 ftcdlib https://doi.org/10.1034/j.1600-0889.1992.t01-2-00007.x 2016-04-02T18:21:10Z Methane sulphonic acid (MSA) in an ice core from Dolleman Island (70°35′S, 60°56′W) shows significantly high concentrations (typically 1-2 µm, but up to 5 µm) compared to values recorded in ice cores and in snowfall from elsewhere in Antarctica. MSA data from two other higher altitude Antarctic Peninsula ice cores, Dyer Plateau (70°31′S, 65°01′W) and Gomez Nunatak (74°01′S, 70°38′W), show that the high concentrations measured at Dolleman Island are not representative of the Peninsula region as a whole. However the mean molar MSA/nss-SO4 2- ratios at the three sites are similar (Dolleman Is, 0.46; Gomez, 0.37; Dyer, 0.32). Exceptionally high concentrations observed at Dolleman Island may be related to its proximity to the biologically productive Weddell Sea, an important source of dimethyl sulphide (DMS), the precursor of MSA. The MSA data from this site are further unusual in that in deeper sections of this core they demonstrate a well defined seasonal maximum in winter rather than in summer and are out of phase with non sea-salt sulphate, another product of the decomposition of DMS. In contrast, in a near-surface section, MSA variations are in phase with non sea-salt sulphate, with a maximum concentration in the summer layer. A change in the season of deposition of MSA from winter to summer in the recent past is not considered likely. An alternative explanation is that there has been a relocation of the MSA from summer to winter layers during burial. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Dolleman Island ice core Weddell Sea University of California: eScholarship Antarctic Antarctic Peninsula Dolleman ENVELOPE(-60.733,-60.733,-70.616,-70.616) Dolleman Island ENVELOPE(-60.750,-60.750,-70.667,-70.667) Dyer ENVELOPE(-81.366,-81.366,50.550,50.550) Dyer Plateau ENVELOPE(-65.000,-65.000,-70.500,-70.500) Gomez ENVELOPE(-58.795,-58.795,-62.196,-62.196) Gomez Nunatak ENVELOPE(-68.632,-68.632,-73.934,-73.934) Weddell Weddell Sea Tellus B 44 4 295 303 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Physical Sciences and Mathematics dimethyl sulphide DMS ice core methane sulphonic acid non sea-salt sulphate sulphate |
spellingShingle |
Physical Sciences and Mathematics dimethyl sulphide DMS ice core methane sulphonic acid non sea-salt sulphate sulphate Mulvaney, Robert Pasteur, Elizabeth C Peel, David A Saltzman, Eric S Whung, Pai-Yei The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores |
topic_facet |
Physical Sciences and Mathematics dimethyl sulphide DMS ice core methane sulphonic acid non sea-salt sulphate sulphate |
description |
Methane sulphonic acid (MSA) in an ice core from Dolleman Island (70°35′S, 60°56′W) shows significantly high concentrations (typically 1-2 µm, but up to 5 µm) compared to values recorded in ice cores and in snowfall from elsewhere in Antarctica. MSA data from two other higher altitude Antarctic Peninsula ice cores, Dyer Plateau (70°31′S, 65°01′W) and Gomez Nunatak (74°01′S, 70°38′W), show that the high concentrations measured at Dolleman Island are not representative of the Peninsula region as a whole. However the mean molar MSA/nss-SO4 2- ratios at the three sites are similar (Dolleman Is, 0.46; Gomez, 0.37; Dyer, 0.32). Exceptionally high concentrations observed at Dolleman Island may be related to its proximity to the biologically productive Weddell Sea, an important source of dimethyl sulphide (DMS), the precursor of MSA. The MSA data from this site are further unusual in that in deeper sections of this core they demonstrate a well defined seasonal maximum in winter rather than in summer and are out of phase with non sea-salt sulphate, another product of the decomposition of DMS. In contrast, in a near-surface section, MSA variations are in phase with non sea-salt sulphate, with a maximum concentration in the summer layer. A change in the season of deposition of MSA from winter to summer in the recent past is not considered likely. An alternative explanation is that there has been a relocation of the MSA from summer to winter layers during burial. |
format |
Article in Journal/Newspaper |
author |
Mulvaney, Robert Pasteur, Elizabeth C Peel, David A Saltzman, Eric S Whung, Pai-Yei |
author_facet |
Mulvaney, Robert Pasteur, Elizabeth C Peel, David A Saltzman, Eric S Whung, Pai-Yei |
author_sort |
Mulvaney, Robert |
title |
The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores |
title_short |
The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores |
title_full |
The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores |
title_fullStr |
The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores |
title_full_unstemmed |
The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores |
title_sort |
ratio of msa to non-sea-salt sulphate in antarctic peninsula ice cores |
publisher |
eScholarship, University of California |
publishDate |
1992 |
url |
http://www.escholarship.org/uc/item/4v41n77b |
op_coverage |
295 - 303 |
long_lat |
ENVELOPE(-60.733,-60.733,-70.616,-70.616) ENVELOPE(-60.750,-60.750,-70.667,-70.667) ENVELOPE(-81.366,-81.366,50.550,50.550) ENVELOPE(-65.000,-65.000,-70.500,-70.500) ENVELOPE(-58.795,-58.795,-62.196,-62.196) ENVELOPE(-68.632,-68.632,-73.934,-73.934) |
geographic |
Antarctic Antarctic Peninsula Dolleman Dolleman Island Dyer Dyer Plateau Gomez Gomez Nunatak Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Dolleman Dolleman Island Dyer Dyer Plateau Gomez Gomez Nunatak Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Dolleman Island ice core Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Dolleman Island ice core Weddell Sea |
op_source |
Mulvaney, Robert; Pasteur, Elizabeth C; Peel, David A; Saltzman, Eric S; & Whung, Pai-Yei. (1992). The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores. Tellus B, 44(4), 295 - 303. doi:10.1034/j.1600-0889.1992.t01-2-00007.x. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/4v41n77b |
op_relation |
qt4v41n77b http://www.escholarship.org/uc/item/4v41n77b |
op_rights |
Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1034/j.1600-0889.1992.t01-2-00007.x |
container_title |
Tellus B |
container_volume |
44 |
container_issue |
4 |
container_start_page |
295 |
op_container_end_page |
303 |
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