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 idealized 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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2021
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Online Access: | https://pure.uhi.ac.uk/en/publications/341f0cc5-9a8c-4277-966e-90f075f8b3f5 https://doi.org/10.1029/2020GL091412 https://pureadmin.uhi.ac.uk/ws/files/15608865/2020GL091412.pdf https://onlinelibrary.wiley.com/doi/10.1029/2020GL091412 |
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ftuhipublicatio:oai:pure.atira.dk:publications/341f0cc5-9a8c-4277-966e-90f075f8b3f5 2024-04-28T07:58:45+00:00 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 2021-03-25 application/pdf https://pure.uhi.ac.uk/en/publications/341f0cc5-9a8c-4277-966e-90f075f8b3f5 https://doi.org/10.1029/2020GL091412 https://pureadmin.uhi.ac.uk/ws/files/15608865/2020GL091412.pdf https://onlinelibrary.wiley.com/doi/10.1029/2020GL091412 eng eng info:eu-repo/semantics/openAccess Goursaud , S , Holloway , M , Sime , L , Wolff , E , Valdes , P , Steig , E J & Pauling , A 2021 , ' Antarctic Ice Sheet Elevation Impacts on Water Isotope Records During the Last Interglacial ' , Geophysical Research Letters , vol. 48 , no. 6 . https://doi.org/10.1029/2020GL091412 climate modelling effect of the elevation last interglacial water stable isotopes article 2021 ftuhipublicatio https://doi.org/10.1029/2020GL091412 2024-04-04T17:16:03Z 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 idealized AIS elevation change scenarios to investigate this for the warm Last Interglacial (LIG). We show that LIG δ18O against elevation relationships is 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 δ18O 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 δ18O 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 kyr. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet Sea ice University of the Highlands and Islands: Research Database of UHI Geophysical Research Letters 48 6 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
climate modelling effect of the elevation last interglacial water stable isotopes |
spellingShingle |
climate modelling effect of the elevation last interglacial water stable isotopes 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 |
topic_facet |
climate modelling effect of the elevation last interglacial water stable isotopes |
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 idealized AIS elevation change scenarios to investigate this for the warm Last Interglacial (LIG). We show that LIG δ18O against elevation relationships is 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 δ18O 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 δ18O 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 kyr. |
format |
Article in Journal/Newspaper |
author |
Goursaud, Sentia Holloway, Max Sime, Louise Wolff, Eric Valdes, Paul Steig, Eric J. Pauling, Andrew |
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 |
publishDate |
2021 |
url |
https://pure.uhi.ac.uk/en/publications/341f0cc5-9a8c-4277-966e-90f075f8b3f5 https://doi.org/10.1029/2020GL091412 https://pureadmin.uhi.ac.uk/ws/files/15608865/2020GL091412.pdf https://onlinelibrary.wiley.com/doi/10.1029/2020GL091412 |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet Sea ice |
op_source |
Goursaud , S , Holloway , M , Sime , L , Wolff , E , Valdes , P , Steig , E J & Pauling , A 2021 , ' Antarctic Ice Sheet Elevation Impacts on Water Isotope Records During the Last Interglacial ' , Geophysical Research Letters , vol. 48 , no. 6 . https://doi.org/10.1029/2020GL091412 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020GL091412 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
6 |
_version_ |
1797571545267175424 |