Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka
ABSTRACT Documenting past changes in the East Antarctic surface mass balance is important to improve ice core chronologies and to constrain the ice-sheet contribution to global mean sea-level change. Here we reconstruct past changes in the ratio of surface mass balance (SMB ratio) between the EPICA...
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crcambridgeupr:10.1017/jog.2016.85 2024-03-03T08:39:17+00:00 Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka PARRENIN, F. FUJITA, S. ABE-OUCHI, A. KAWAMURA, K. MASSON-DELMOTTE, V. MOTOYAMA, H. SAITO, F. SEVERI, M. STENNI, B. UEMURA, R. WOLFF, E. W. 2016 http://dx.doi.org/10.1017/jog.2016.85 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214301600085X en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 62, issue 236, page 1037-1048 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 2016 crcambridgeupr https://doi.org/10.1017/jog.2016.85 2024-02-08T08:40:08Z ABSTRACT Documenting past changes in the East Antarctic surface mass balance is important to improve ice core chronologies and to constrain the ice-sheet contribution to global mean sea-level change. Here we reconstruct past changes in the ratio of surface mass balance (SMB ratio) between the EPICA Dome C (EDC) and Dome Fuji (DF) East Antarctica ice core sites, based on a precise volcanic synchronization of the two ice cores and on corrections for the vertical thinning of layers. During the past 216 000 a, this SMB ratio, denoted SMB EDC /SMB DF , varied between 0.7 and 1.1, being small during cold periods and large during warm periods. Our results therefore reveal larger amplitudes of changes in SMB at EDC compared with DF, consistent with previous results showing larger amplitudes of changes in water stable isotopes and estimated surface temperature at EDC compared with DF. Within the last glacial inception (Marine Isotope Stages, MIS-5c and MIS-5d), the SMB ratio deviates by up to 0.2 from what is expected based on differences in water stable isotope records. Moreover, the SMB ratio is constant throughout the late parts of the current and last interglacial periods, despite contrasting isotopic trends. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Journal of Glaciology Cambridge University Press Antarctic East Antarctica Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Journal of Glaciology 62 236 1037 1048 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes PARRENIN, F. FUJITA, S. ABE-OUCHI, A. KAWAMURA, K. MASSON-DELMOTTE, V. MOTOYAMA, H. SAITO, F. SEVERI, M. STENNI, B. UEMURA, R. WOLFF, E. W. Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
topic_facet |
Earth-Surface Processes |
description |
ABSTRACT Documenting past changes in the East Antarctic surface mass balance is important to improve ice core chronologies and to constrain the ice-sheet contribution to global mean sea-level change. Here we reconstruct past changes in the ratio of surface mass balance (SMB ratio) between the EPICA Dome C (EDC) and Dome Fuji (DF) East Antarctica ice core sites, based on a precise volcanic synchronization of the two ice cores and on corrections for the vertical thinning of layers. During the past 216 000 a, this SMB ratio, denoted SMB EDC /SMB DF , varied between 0.7 and 1.1, being small during cold periods and large during warm periods. Our results therefore reveal larger amplitudes of changes in SMB at EDC compared with DF, consistent with previous results showing larger amplitudes of changes in water stable isotopes and estimated surface temperature at EDC compared with DF. Within the last glacial inception (Marine Isotope Stages, MIS-5c and MIS-5d), the SMB ratio deviates by up to 0.2 from what is expected based on differences in water stable isotope records. Moreover, the SMB ratio is constant throughout the late parts of the current and last interglacial periods, despite contrasting isotopic trends. |
format |
Article in Journal/Newspaper |
author |
PARRENIN, F. FUJITA, S. ABE-OUCHI, A. KAWAMURA, K. MASSON-DELMOTTE, V. MOTOYAMA, H. SAITO, F. SEVERI, M. STENNI, B. UEMURA, R. WOLFF, E. W. |
author_facet |
PARRENIN, F. FUJITA, S. ABE-OUCHI, A. KAWAMURA, K. MASSON-DELMOTTE, V. MOTOYAMA, H. SAITO, F. SEVERI, M. STENNI, B. UEMURA, R. WOLFF, E. W. |
author_sort |
PARRENIN, F. |
title |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_short |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_full |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_fullStr |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_full_unstemmed |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_sort |
climate dependent contrast in surface mass balance in east antarctica over the past 216 ka |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1017/jog.2016.85 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214301600085X |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic East Antarctica Dome Fuji |
geographic_facet |
Antarctic East Antarctica Dome Fuji |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 62, issue 236, page 1037-1048 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2016.85 |
container_title |
Journal of Glaciology |
container_volume |
62 |
container_issue |
236 |
container_start_page |
1037 |
op_container_end_page |
1048 |
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1792494729521266688 |