A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica
The Mount Johns (MJ) ice core (79°55′ S; 94°23′ W) was drilled near the Pine Island Glacier ice divide on the West Antarctic Ice Sheet during the 2008–2009 austral summer, to a depth of 92.26 m. The upper 45 m of the record covers approximately 125 years (1883–2008), showing marked seasonal variabil...
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ftdoajarticles:oai:doaj.org/article:408853a0e701423ebee15a8f9b6100f1 2023-05-15T13:50:15+02:00 A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica F. Schwanck J. C. Simões M. Handley P. A. Mayewski J. D. Auger R. T. Bernardo F. E. Aquino 2017-07-01T00:00:00Z https://doi.org/10.5194/tc-11-1537-2017 https://doaj.org/article/408853a0e701423ebee15a8f9b6100f1 EN eng Copernicus Publications https://www.the-cryosphere.net/11/1537/2017/tc-11-1537-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-1537-2017 1994-0416 1994-0424 https://doaj.org/article/408853a0e701423ebee15a8f9b6100f1 The Cryosphere, Vol 11, Pp 1537-1552 (2017) Environmental sciences GE1-350 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/tc-11-1537-2017 2022-12-31T05:53:11Z The Mount Johns (MJ) ice core (79°55′ S; 94°23′ W) was drilled near the Pine Island Glacier ice divide on the West Antarctic Ice Sheet during the 2008–2009 austral summer, to a depth of 92.26 m. The upper 45 m of the record covers approximately 125 years (1883–2008), showing marked seasonal variability. Trace element concentrations in 2137 samples were determined using inductively coupled plasma mass spectrometry. In this study, we reconstruct mineral dust and sea salt aerosol transport and investigate the influence of climate variables on the elemental concentrations at the MJ site. The ice core record reflects changes in emissions as well as atmospheric circulation and transport processes. Our trajectory analysis shows distinct seasonality, with strong westerly transport in the winter months and secondary northeasterly transport in the summer. During summer months, the trajectories present slow-moving (short) transport and are more locally influenced than in other seasons. Finally, our reanalysis correlations with trace element suggest that marine-derived trace element concentrations are strongly influenced by sea ice concentration and sea surface temperature anomalies. The results show that seasonal elemental concentration maxima in sea salt elements correlate well with the sea ice concentration winter maxima in the west Amundsen and Ross seas. Lastly, we observed an increased concentration of marine aerosols when sea surface temperature decreased. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet Pine Island Pine Island Glacier Sea ice The Cryosphere Directory of Open Access Journals: DOAJ Articles Antarctic Austral West Antarctic Ice Sheet Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Mount Johns ENVELOPE(161.017,161.017,-77.326,-77.326) The Cryosphere 11 4 1537 1552 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 F. Schwanck J. C. Simões M. Handley P. A. Mayewski J. D. Auger R. T. Bernardo F. E. Aquino A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
The Mount Johns (MJ) ice core (79°55′ S; 94°23′ W) was drilled near the Pine Island Glacier ice divide on the West Antarctic Ice Sheet during the 2008–2009 austral summer, to a depth of 92.26 m. The upper 45 m of the record covers approximately 125 years (1883–2008), showing marked seasonal variability. Trace element concentrations in 2137 samples were determined using inductively coupled plasma mass spectrometry. In this study, we reconstruct mineral dust and sea salt aerosol transport and investigate the influence of climate variables on the elemental concentrations at the MJ site. The ice core record reflects changes in emissions as well as atmospheric circulation and transport processes. Our trajectory analysis shows distinct seasonality, with strong westerly transport in the winter months and secondary northeasterly transport in the summer. During summer months, the trajectories present slow-moving (short) transport and are more locally influenced than in other seasons. Finally, our reanalysis correlations with trace element suggest that marine-derived trace element concentrations are strongly influenced by sea ice concentration and sea surface temperature anomalies. The results show that seasonal elemental concentration maxima in sea salt elements correlate well with the sea ice concentration winter maxima in the west Amundsen and Ross seas. Lastly, we observed an increased concentration of marine aerosols when sea surface temperature decreased. |
format |
Article in Journal/Newspaper |
author |
F. Schwanck J. C. Simões M. Handley P. A. Mayewski J. D. Auger R. T. Bernardo F. E. Aquino |
author_facet |
F. Schwanck J. C. Simões M. Handley P. A. Mayewski J. D. Auger R. T. Bernardo F. E. Aquino |
author_sort |
F. Schwanck |
title |
A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica |
title_short |
A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica |
title_full |
A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica |
title_fullStr |
A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica |
title_full_unstemmed |
A 125-year record of climate and chemistry variability at the Pine Island Glacier ice divide, Antarctica |
title_sort |
125-year record of climate and chemistry variability at the pine island glacier ice divide, antarctica |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-1537-2017 https://doaj.org/article/408853a0e701423ebee15a8f9b6100f1 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) ENVELOPE(161.017,161.017,-77.326,-77.326) |
geographic |
Antarctic Austral West Antarctic Ice Sheet Pine Island Glacier Mount Johns |
geographic_facet |
Antarctic Austral West Antarctic Ice Sheet Pine Island Glacier Mount Johns |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet Pine Island Pine Island Glacier Sea ice The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet Pine Island Pine Island Glacier Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 11, Pp 1537-1552 (2017) |
op_relation |
https://www.the-cryosphere.net/11/1537/2017/tc-11-1537-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-1537-2017 1994-0416 1994-0424 https://doaj.org/article/408853a0e701423ebee15a8f9b6100f1 |
op_doi |
https://doi.org/10.5194/tc-11-1537-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
4 |
container_start_page |
1537 |
op_container_end_page |
1552 |
_version_ |
1766253278389075968 |