Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial
Changes of the topography of the Antarctic ice sheet (AIS) can complicate the interpretation of ice core water stable isotope measurements in terms of temperature. Here, we use a set of idealised AIS elevation change scenarios to investigate this for the warm Last Interglacial (LIG). We show that LI...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
2021
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Online Access: | http://nora.nerc.ac.uk/id/eprint/529314/ https://nora.nerc.ac.uk/id/eprint/529314/1/2020GL091412.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL091412 |
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ftnerc:oai:nora.nerc.ac.uk:529314 2023-05-15T13:41:45+02:00 Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial Goursaud, Sentia Holloway, Max Sime, Louise Wolff, Eric Valdes, Paul Steig, Eric J. Pauling, Andrew 2021-03-28 text http://nora.nerc.ac.uk/id/eprint/529314/ https://nora.nerc.ac.uk/id/eprint/529314/1/2020GL091412.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL091412 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/529314/1/2020GL091412.pdf Goursaud, Sentia; Holloway, Max; Sime, Louise orcid:0000-0002-9093-7926 Wolff, Eric; Valdes, Paul; Steig, Eric J.; Pauling, Andrew. 2021 Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial. Geophysical Research Letters, 48 (6), e2020GL091412. 10, pp. https://doi.org/10.1029/2020GL091412 <https://doi.org/10.1029/2020GL091412> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1029/2020GL091412 2023-02-04T19:51:34Z Changes of the topography of the Antarctic ice sheet (AIS) can complicate the interpretation of ice core water stable isotope measurements in terms of temperature. Here, we use a set of idealised AIS elevation change scenarios to investigate this for the warm Last Interglacial (LIG). We show that LIG δ 18 O against elevation relationships are not uniform across Antarctica, and that the LIG response to elevation is lower than the preindustrial response. The effect of LIG elevation‐induced sea ice changes on δ 18 O is small, allowing us to isolate the effect of elevation change alone. Our results help to define the effect of AIS changes on the LIG δ 18 O signals, and should be invaluable to those seeking to use AIS ice core measurements for these purposes. Especially, our simulations strengthen the conclusion that ice core measurements from the Talos Dome core exclude the loss of the Wilkes Basin at around 128 ky. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet Sea ice Natural Environment Research Council: NERC Open Research Archive Antarctic Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) The Antarctic Geophysical Research Letters 48 6 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Changes of the topography of the Antarctic ice sheet (AIS) can complicate the interpretation of ice core water stable isotope measurements in terms of temperature. Here, we use a set of idealised AIS elevation change scenarios to investigate this for the warm Last Interglacial (LIG). We show that LIG δ 18 O against elevation relationships are not uniform across Antarctica, and that the LIG response to elevation is lower than the preindustrial response. The effect of LIG elevation‐induced sea ice changes on δ 18 O is small, allowing us to isolate the effect of elevation change alone. Our results help to define the effect of AIS changes on the LIG δ 18 O signals, and should be invaluable to those seeking to use AIS ice core measurements for these purposes. Especially, our simulations strengthen the conclusion that ice core measurements from the Talos Dome core exclude the loss of the Wilkes Basin at around 128 ky. |
format |
Article in Journal/Newspaper |
author |
Goursaud, Sentia Holloway, Max Sime, Louise Wolff, Eric Valdes, Paul Steig, Eric J. Pauling, Andrew |
spellingShingle |
Goursaud, Sentia Holloway, Max Sime, Louise Wolff, Eric Valdes, Paul Steig, Eric J. Pauling, Andrew Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial |
author_facet |
Goursaud, Sentia Holloway, Max Sime, Louise Wolff, Eric Valdes, Paul Steig, Eric J. Pauling, Andrew |
author_sort |
Goursaud, Sentia |
title |
Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial |
title_short |
Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial |
title_full |
Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial |
title_fullStr |
Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial |
title_full_unstemmed |
Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial |
title_sort |
antarctic ice sheet elevation impacts on water isotope records during the last interglacial |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/529314/ https://nora.nerc.ac.uk/id/eprint/529314/1/2020GL091412.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL091412 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic Talos Dome The Antarctic |
geographic_facet |
Antarctic Talos Dome The Antarctic |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/529314/1/2020GL091412.pdf Goursaud, Sentia; Holloway, Max; Sime, Louise orcid:0000-0002-9093-7926 Wolff, Eric; Valdes, Paul; Steig, Eric J.; Pauling, Andrew. 2021 Antarctic Ice Sheet elevation impacts on water isotope records during the Last Interglacial. Geophysical Research Letters, 48 (6), e2020GL091412. 10, pp. https://doi.org/10.1029/2020GL091412 <https://doi.org/10.1029/2020GL091412> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2020GL091412 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
6 |
_version_ |
1766157204215300096 |