Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica
The flux and chemical composition of aerosols impact the climate. Antarctic ice cores preserve the record of past atmospheric aerosols, providing useful information about past atmospheric environments. However, few studies have directly measured the chemical composition of aerosol particles preserve...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/59422 2023-05-15T13:40:56+02:00 Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica Oyabu, Ikumi Iizuka, Yoshinori Uemura, Ryu Miyake, Takayuki Hirabayashi, Motohiro Motoyama, Hideaki Sakurai, Toshimitsu Suzuki, Toshitaka Hondoh, Takeo http://hdl.handle.net/2115/59422 https://doi.org/10.1002/2014JD022030 eng eng American Geophysical Union http://hdl.handle.net/2115/59422 Journal of geophysical research : atmospheres, 119(24): 14045-14058 http://dx.doi.org/10.1002/2014JD022030 Copyright 2014 American Geophysical Union. 451 article fthokunivhus https://doi.org/10.1002/2014JD022030 2022-11-18T01:03:26Z The flux and chemical composition of aerosols impact the climate. Antarctic ice cores preserve the record of past atmospheric aerosols, providing useful information about past atmospheric environments. However, few studies have directly measured the chemical composition of aerosol particles preserved in ice cores. Here we present the chemical compositions of sulfate and chloride salts from aerosol particles in the Dome Fuji ice core. The analysis method involves ice sublimation, and the period covers the last termination, 25.0-11.0 thousand years before present (kyr B.P.), with a 350 year resolution. The major components of the soluble particles are CaSO4, Na2SO4, and NaCl. The dominant sulfate salt changes at 16.8 kyr B.P. from CaSO4, a glacial type, to Na2SO4, an interglacial type. The sulfate salt flux (CaSO4 plus Na2SO4) inversely correlates with delta O-18 in Dome Fuji over millennial timescales. This correlation is consistent with the idea that sulfate salt aerosols contributed to the last deglacial warming of inland Antarctica by reducing the aerosol indirect effect. Between 16.3 and 11.0 kyr B.P., the presence of NaCl suggests that winter atmospheric aerosols are preserved. A high NaCl/Na2SO4 fraction between 12.3 and 11.0 kyr B.P. indicates that the contribution from the transport of winter atmospheric aerosols increased during this period. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Journal of Geophysical Research: Atmospheres 119 24 14,045 14,058 |
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Open Polar |
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Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
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fthokunivhus |
language |
English |
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451 |
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451 Oyabu, Ikumi Iizuka, Yoshinori Uemura, Ryu Miyake, Takayuki Hirabayashi, Motohiro Motoyama, Hideaki Sakurai, Toshimitsu Suzuki, Toshitaka Hondoh, Takeo Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica |
topic_facet |
451 |
description |
The flux and chemical composition of aerosols impact the climate. Antarctic ice cores preserve the record of past atmospheric aerosols, providing useful information about past atmospheric environments. However, few studies have directly measured the chemical composition of aerosol particles preserved in ice cores. Here we present the chemical compositions of sulfate and chloride salts from aerosol particles in the Dome Fuji ice core. The analysis method involves ice sublimation, and the period covers the last termination, 25.0-11.0 thousand years before present (kyr B.P.), with a 350 year resolution. The major components of the soluble particles are CaSO4, Na2SO4, and NaCl. The dominant sulfate salt changes at 16.8 kyr B.P. from CaSO4, a glacial type, to Na2SO4, an interglacial type. The sulfate salt flux (CaSO4 plus Na2SO4) inversely correlates with delta O-18 in Dome Fuji over millennial timescales. This correlation is consistent with the idea that sulfate salt aerosols contributed to the last deglacial warming of inland Antarctica by reducing the aerosol indirect effect. Between 16.3 and 11.0 kyr B.P., the presence of NaCl suggests that winter atmospheric aerosols are preserved. A high NaCl/Na2SO4 fraction between 12.3 and 11.0 kyr B.P. indicates that the contribution from the transport of winter atmospheric aerosols increased during this period. |
format |
Article in Journal/Newspaper |
author |
Oyabu, Ikumi Iizuka, Yoshinori Uemura, Ryu Miyake, Takayuki Hirabayashi, Motohiro Motoyama, Hideaki Sakurai, Toshimitsu Suzuki, Toshitaka Hondoh, Takeo |
author_facet |
Oyabu, Ikumi Iizuka, Yoshinori Uemura, Ryu Miyake, Takayuki Hirabayashi, Motohiro Motoyama, Hideaki Sakurai, Toshimitsu Suzuki, Toshitaka Hondoh, Takeo |
author_sort |
Oyabu, Ikumi |
title |
Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica |
title_short |
Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica |
title_full |
Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica |
title_fullStr |
Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica |
title_full_unstemmed |
Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica |
title_sort |
chemical compositions of sulfate and chloride salts over the last termination reconstructed from the dome fuji ice core, inland antarctica |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/2115/59422 https://doi.org/10.1002/2014JD022030 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic Dome Fuji |
geographic_facet |
Antarctic Dome Fuji |
genre |
Antarc* Antarctic Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica ice core |
op_relation |
http://hdl.handle.net/2115/59422 Journal of geophysical research : atmospheres, 119(24): 14045-14058 http://dx.doi.org/10.1002/2014JD022030 |
op_rights |
Copyright 2014 American Geophysical Union. |
op_doi |
https://doi.org/10.1002/2014JD022030 |
container_title |
Journal of Geophysical Research: Atmospheres |
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119 |
container_issue |
24 |
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14,045 |
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14,058 |
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1766143468814467072 |