Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores
© 2016. American Geophysical Union. All Rights Reserved. We measured carbonyl sulfide (COS) in air extracted from ice core samples from the West Antarctic Ice Sheet (WAIS) Divide, Antarctica, with the deepest sample dated to 54,300 years before present. These are the first ice core COS measurements...
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ftcdlib:qt4b53v512 2023-05-15T13:52:31+02:00 Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores Aydin, M Campbell, JE Fudge, TJ Cuffey, KM Nicewonger, MR Verhulst, KR Saltzman, ES 1943 - 1954 2016-02-27 application/pdf http://www.escholarship.org/uc/item/4b53v512 english eng eScholarship, University of California qt4b53v512 http://www.escholarship.org/uc/item/4b53v512 Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Aydin, M; Campbell, JE; Fudge, TJ; Cuffey, KM; Nicewonger, MR; Verhulst, KR; et al.(2016). Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores. Journal of Geophysical Research, 121(4), 1943 - 1954. doi:10.1002/2015JD024235. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/4b53v512 carbonyl sulfide COS ice cores ice core gas records gross primary productivity article 2016 ftcdlib https://doi.org/10.1002/2015JD024235 2017-12-29T23:50:58Z © 2016. American Geophysical Union. All Rights Reserved. We measured carbonyl sulfide (COS) in air extracted from ice core samples from the West Antarctic Ice Sheet (WAIS) Divide, Antarctica, with the deepest sample dated to 54,300 years before present. These are the first ice core COS measurements spanning the Last Glacial Maximum (LGM), the last glacial/interglacial transition, and the early Holocene. The WAIS Divide measurements from the LGM and the last transition are the first COS measurements in air extracted from full clathrate (bubble-free) ice. This study also includes new COS measurements from Taylor Dome, Antarctica, including some in bubbly glacial ice that are concurrent with the WAIS Divide data from clathrate glacial ice. COS hydrolyzes in ice core air bubbles, and the recovery of an atmospheric record requires correcting for this loss. The data presented here suggest that the in situ hydrolysis of COS is significantly slower in clathrate ice than in bubbly ice. The clathrate ice measurements are corrected for the hydrolysis loss during the time spent as bubbly ice only. The corrected WAIS Divide record indicates that atmospheric COS was 250–300 parts per trillion (ppt) during the LGM and declined by 80–100 ppt during the last glacial/interglacial transition to a minimum of 160–210 ppt at the beginning of the Holocene. This decline was likely caused by an increase in the gross primary productivity of terrestrial plants, with a possible contribution from a reduction in ocean sources. COS levels were above 300 ppt in the late Holocene, indicating that large changes in the COS biogeochemical cycle occurred during the Holocene. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet University of California: eScholarship Antarctic Taylor Dome ENVELOPE(157.667,157.667,-77.667,-77.667) West Antarctic Ice Sheet Journal of Geophysical Research: Atmospheres 121 4 1943 1954 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
carbonyl sulfide COS ice cores ice core gas records gross primary productivity |
spellingShingle |
carbonyl sulfide COS ice cores ice core gas records gross primary productivity Aydin, M Campbell, JE Fudge, TJ Cuffey, KM Nicewonger, MR Verhulst, KR Saltzman, ES Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores |
topic_facet |
carbonyl sulfide COS ice cores ice core gas records gross primary productivity |
description |
© 2016. American Geophysical Union. All Rights Reserved. We measured carbonyl sulfide (COS) in air extracted from ice core samples from the West Antarctic Ice Sheet (WAIS) Divide, Antarctica, with the deepest sample dated to 54,300 years before present. These are the first ice core COS measurements spanning the Last Glacial Maximum (LGM), the last glacial/interglacial transition, and the early Holocene. The WAIS Divide measurements from the LGM and the last transition are the first COS measurements in air extracted from full clathrate (bubble-free) ice. This study also includes new COS measurements from Taylor Dome, Antarctica, including some in bubbly glacial ice that are concurrent with the WAIS Divide data from clathrate glacial ice. COS hydrolyzes in ice core air bubbles, and the recovery of an atmospheric record requires correcting for this loss. The data presented here suggest that the in situ hydrolysis of COS is significantly slower in clathrate ice than in bubbly ice. The clathrate ice measurements are corrected for the hydrolysis loss during the time spent as bubbly ice only. The corrected WAIS Divide record indicates that atmospheric COS was 250–300 parts per trillion (ppt) during the LGM and declined by 80–100 ppt during the last glacial/interglacial transition to a minimum of 160–210 ppt at the beginning of the Holocene. This decline was likely caused by an increase in the gross primary productivity of terrestrial plants, with a possible contribution from a reduction in ocean sources. COS levels were above 300 ppt in the late Holocene, indicating that large changes in the COS biogeochemical cycle occurred during the Holocene. |
format |
Article in Journal/Newspaper |
author |
Aydin, M Campbell, JE Fudge, TJ Cuffey, KM Nicewonger, MR Verhulst, KR Saltzman, ES |
author_facet |
Aydin, M Campbell, JE Fudge, TJ Cuffey, KM Nicewonger, MR Verhulst, KR Saltzman, ES |
author_sort |
Aydin, M |
title |
Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores |
title_short |
Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores |
title_full |
Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores |
title_fullStr |
Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores |
title_full_unstemmed |
Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores |
title_sort |
changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in antarctic ice cores |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
http://www.escholarship.org/uc/item/4b53v512 |
op_coverage |
1943 - 1954 |
long_lat |
ENVELOPE(157.667,157.667,-77.667,-77.667) |
geographic |
Antarctic Taylor Dome West Antarctic Ice Sheet |
geographic_facet |
Antarctic Taylor Dome West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet |
op_source |
Aydin, M; Campbell, JE; Fudge, TJ; Cuffey, KM; Nicewonger, MR; Verhulst, KR; et al.(2016). Changes in atmospheric carbonyl sulfide over the last 54,000years inferred from measurements in Antarctic ice cores. Journal of Geophysical Research, 121(4), 1943 - 1954. doi:10.1002/2015JD024235. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/4b53v512 |
op_relation |
qt4b53v512 http://www.escholarship.org/uc/item/4b53v512 |
op_rights |
Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/2015JD024235 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
121 |
container_issue |
4 |
container_start_page |
1943 |
op_container_end_page |
1954 |
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1766256827823030272 |