A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica)
The timing and synchronisation of Greenland and Antarctic climate events that occurred during the last glacial period are still under debate, as is the magnitude of temperature change associated with these events. Here we present detailed records of local and moisture-source temperature changes span...
Published in: | Earth and Planetary Science Letters |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/12982/ http://www.sciencedirect.com/science/article/pii/S0012821X03005740 |
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ftnerc:oai:nora.nerc.ac.uk:12982 2023-05-15T13:45:11+02:00 A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica) Stenni, B. Jouzel, J. Masson-Delmotte, V. Röthlisberger, R. Castellano, E. Cattani, O. Falourd, S. Johnsen, S.J. Longinelli, A. Sachs, J.P. Selmo, E. Souchez, R. Steffensen, J.P. Udisti, R. 2003 http://nora.nerc.ac.uk/id/eprint/12982/ http://www.sciencedirect.com/science/article/pii/S0012821X03005740 unknown Elsevier Stenni, B.; Jouzel, J.; Masson-Delmotte, V.; Röthlisberger, R.; Castellano, E.; Cattani, O.; Falourd, S.; Johnsen, S.J.; Longinelli, A.; Sachs, J.P.; Selmo, E.; Souchez, R.; Steffensen, J.P.; Udisti, R. 2003 A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica). Earth and Planetary Science Letters, 217 (1-2). 183-195. https://doi.org/10.1016/S0012-821X(03)00574-0 <https://doi.org/10.1016/S0012-821X(03)00574-0> Meteorology and Climatology Glaciology Chemistry Publication - Article PeerReviewed 2003 ftnerc https://doi.org/10.1016/S0012-821X(03)00574-0 2023-02-04T19:28:22Z The timing and synchronisation of Greenland and Antarctic climate events that occurred during the last glacial period are still under debate, as is the magnitude of temperature change associated with these events. Here we present detailed records of local and moisture-source temperature changes spanning the period 27-45 kyr BP from water stable isotope measurements (deltaD and delta(18)O) in the recently drilled EPICA Dome C ice core, East Antarctic plateau. Using a simple isotopic model, site (DeltaT(site)) and source (DeltaT(source)) temperatures are extracted from the initial 50-yr high-resolution isotopic records, taking into account the changes in seawater isotopic composition. The deuterium isotope variability is very similar to the less precise deltaD record from the Vostok ice core, and the site temperature inversion leads to a temperature profile similar to the classical palaeothermometry method, due to compensations between source and ocean water corrections. The reconstructed DeltaT(site) and DeltaT(source) profiles show different trends during the glacial: the former shows a decreasing trend from the warm Al event (38 kyr BP) toward the Last Glacial Maximum, while the latter shows increasing values from 41 to 28 kyr BP. The low-frequency deuterium excess fluctuations are strongly influenced by obliquity fluctuations, controlling the low- to high-latitude temperature gradients, and show a remarkable similarity with a high-resolution southeast Atlantic sea surface temperature record. A comparison of the temperature profiles (site and source) and temperature gradient (DeltaT(source)-DeltaT(site)) with the non-sea-salt calcium and sodium records suggests a secondary influence of atmospheric transport changes on aerosol variations. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA Greenland ice core Natural Environment Research Council: NERC Open Research Archive Antarctic East Antarctica Greenland Earth and Planetary Science Letters 217 1-2 183 195 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Meteorology and Climatology Glaciology Chemistry |
spellingShingle |
Meteorology and Climatology Glaciology Chemistry Stenni, B. Jouzel, J. Masson-Delmotte, V. Röthlisberger, R. Castellano, E. Cattani, O. Falourd, S. Johnsen, S.J. Longinelli, A. Sachs, J.P. Selmo, E. Souchez, R. Steffensen, J.P. Udisti, R. A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica) |
topic_facet |
Meteorology and Climatology Glaciology Chemistry |
description |
The timing and synchronisation of Greenland and Antarctic climate events that occurred during the last glacial period are still under debate, as is the magnitude of temperature change associated with these events. Here we present detailed records of local and moisture-source temperature changes spanning the period 27-45 kyr BP from water stable isotope measurements (deltaD and delta(18)O) in the recently drilled EPICA Dome C ice core, East Antarctic plateau. Using a simple isotopic model, site (DeltaT(site)) and source (DeltaT(source)) temperatures are extracted from the initial 50-yr high-resolution isotopic records, taking into account the changes in seawater isotopic composition. The deuterium isotope variability is very similar to the less precise deltaD record from the Vostok ice core, and the site temperature inversion leads to a temperature profile similar to the classical palaeothermometry method, due to compensations between source and ocean water corrections. The reconstructed DeltaT(site) and DeltaT(source) profiles show different trends during the glacial: the former shows a decreasing trend from the warm Al event (38 kyr BP) toward the Last Glacial Maximum, while the latter shows increasing values from 41 to 28 kyr BP. The low-frequency deuterium excess fluctuations are strongly influenced by obliquity fluctuations, controlling the low- to high-latitude temperature gradients, and show a remarkable similarity with a high-resolution southeast Atlantic sea surface temperature record. A comparison of the temperature profiles (site and source) and temperature gradient (DeltaT(source)-DeltaT(site)) with the non-sea-salt calcium and sodium records suggests a secondary influence of atmospheric transport changes on aerosol variations. |
format |
Article in Journal/Newspaper |
author |
Stenni, B. Jouzel, J. Masson-Delmotte, V. Röthlisberger, R. Castellano, E. Cattani, O. Falourd, S. Johnsen, S.J. Longinelli, A. Sachs, J.P. Selmo, E. Souchez, R. Steffensen, J.P. Udisti, R. |
author_facet |
Stenni, B. Jouzel, J. Masson-Delmotte, V. Röthlisberger, R. Castellano, E. Cattani, O. Falourd, S. Johnsen, S.J. Longinelli, A. Sachs, J.P. Selmo, E. Souchez, R. Steffensen, J.P. Udisti, R. |
author_sort |
Stenni, B. |
title |
A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica) |
title_short |
A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica) |
title_full |
A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica) |
title_fullStr |
A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica) |
title_full_unstemmed |
A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica) |
title_sort |
late-glacial high-resolution site and source temperature record derived from the epica dome c isotope records (east antarctica) |
publisher |
Elsevier |
publishDate |
2003 |
url |
http://nora.nerc.ac.uk/id/eprint/12982/ http://www.sciencedirect.com/science/article/pii/S0012821X03005740 |
geographic |
Antarctic East Antarctica Greenland |
geographic_facet |
Antarctic East Antarctica Greenland |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA Greenland ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA Greenland ice core |
op_relation |
Stenni, B.; Jouzel, J.; Masson-Delmotte, V.; Röthlisberger, R.; Castellano, E.; Cattani, O.; Falourd, S.; Johnsen, S.J.; Longinelli, A.; Sachs, J.P.; Selmo, E.; Souchez, R.; Steffensen, J.P.; Udisti, R. 2003 A late-glacial high-resolution site and source temperature record derived from the EPICA Dome C isotope records (East Antarctica). Earth and Planetary Science Letters, 217 (1-2). 183-195. https://doi.org/10.1016/S0012-821X(03)00574-0 <https://doi.org/10.1016/S0012-821X(03)00574-0> |
op_doi |
https://doi.org/10.1016/S0012-821X(03)00574-0 |
container_title |
Earth and Planetary Science Letters |
container_volume |
217 |
container_issue |
1-2 |
container_start_page |
183 |
op_container_end_page |
195 |
_version_ |
1766215311278735360 |