Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes
Last Interglacial (LIG), stable water isotope values (δ18O) measured in Greenland deep ice cores are at least 2.5‰ higher compared to the present day. Previous isotopic climate simulations of the LIG do not capture the observed Greenland δ18O increases. Here, we use the isotope-enabled HadCM3 (UK Me...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/519617/ https://nora.nerc.ac.uk/id/eprint/519617/1/revised_manuscript.docx https://doi.org/10.1016/j.quascirev.2018.07.027 |
id |
ftnerc:oai:nora.nerc.ac.uk:519617 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:519617 2023-05-15T14:27:18+02:00 Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes Malmierca Vallet, Irene Sime, Louise C. Tindall, Julia C Capron, Emilie Valdes, Paul J Vinther, Bo M 2018-10-15 text http://nora.nerc.ac.uk/id/eprint/519617/ https://nora.nerc.ac.uk/id/eprint/519617/1/revised_manuscript.docx https://doi.org/10.1016/j.quascirev.2018.07.027 en eng https://nora.nerc.ac.uk/id/eprint/519617/1/revised_manuscript.docx Malmierca Vallet, Irene orcid:0000-0002-2871-9741 Sime, Louise C. orcid:0000-0002-9093-7926 Tindall, Julia C; Capron, Emilie orcid:0000-0003-0784-1884 Valdes, Paul J; Vinther, Bo M. 2018 Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes. Quaternary Science Reviews, 198. 1-14. https://doi.org/10.1016/j.quascirev.2018.07.027 <https://doi.org/10.1016/j.quascirev.2018.07.027> cc_by_nc_nd_4 CC-BY-NC-ND Publication - Article PeerReviewed 2018 ftnerc https://doi.org/10.1016/j.quascirev.2018.07.027 2023-02-04T19:46:17Z Last Interglacial (LIG), stable water isotope values (δ18O) measured in Greenland deep ice cores are at least 2.5‰ higher compared to the present day. Previous isotopic climate simulations of the LIG do not capture the observed Greenland δ18O increases. Here, we use the isotope-enabled HadCM3 (UK Met Office coupled atmosphere-ocean general circulation model) to investigate whether a retreat of Northern Hemisphere sea ice was responsible for this model-data disagreement. Our results highlight the potential significance of sea ice changes on the LIG Greenland isotopic maximum. Sea ice loss in combination with increased sea surface temperatures, over the Arctic, affect δ18O: water vapour enriched in heavy isotopes and a shorter distillation path may both increase δ18O values over Greenland. We show, for the first time, that simulations of the response to Arctic sea ice reduction are capable of producing the likely magnitude of LIG δ18O increases at NEEM, NGRIP, GIPS2 and Camp Century ice core sites. However, we may underestimate δ18O changes at the Renland, DYE3 and GRIP ice core locations. Accounting for possible ice sheet changes is likely to be required to produce a better fit to the LIG ice core δ18O values. Article in Journal/Newspaper Arctic Arctic Greenland GRIP ice core Ice Sheet NGRIP Sea ice Natural Environment Research Council: NERC Open Research Archive Arctic Greenland Renland ENVELOPE(-26.750,-26.750,71.200,71.200) Quaternary Science Reviews 198 1 14 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Last Interglacial (LIG), stable water isotope values (δ18O) measured in Greenland deep ice cores are at least 2.5‰ higher compared to the present day. Previous isotopic climate simulations of the LIG do not capture the observed Greenland δ18O increases. Here, we use the isotope-enabled HadCM3 (UK Met Office coupled atmosphere-ocean general circulation model) to investigate whether a retreat of Northern Hemisphere sea ice was responsible for this model-data disagreement. Our results highlight the potential significance of sea ice changes on the LIG Greenland isotopic maximum. Sea ice loss in combination with increased sea surface temperatures, over the Arctic, affect δ18O: water vapour enriched in heavy isotopes and a shorter distillation path may both increase δ18O values over Greenland. We show, for the first time, that simulations of the response to Arctic sea ice reduction are capable of producing the likely magnitude of LIG δ18O increases at NEEM, NGRIP, GIPS2 and Camp Century ice core sites. However, we may underestimate δ18O changes at the Renland, DYE3 and GRIP ice core locations. Accounting for possible ice sheet changes is likely to be required to produce a better fit to the LIG ice core δ18O values. |
format |
Article in Journal/Newspaper |
author |
Malmierca Vallet, Irene Sime, Louise C. Tindall, Julia C Capron, Emilie Valdes, Paul J Vinther, Bo M |
spellingShingle |
Malmierca Vallet, Irene Sime, Louise C. Tindall, Julia C Capron, Emilie Valdes, Paul J Vinther, Bo M Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes |
author_facet |
Malmierca Vallet, Irene Sime, Louise C. Tindall, Julia C Capron, Emilie Valdes, Paul J Vinther, Bo M |
author_sort |
Malmierca Vallet, Irene |
title |
Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes |
title_short |
Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes |
title_full |
Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes |
title_fullStr |
Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes |
title_full_unstemmed |
Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes |
title_sort |
simulating the last interglacial greenland stable water isotope peak: the role of arctic sea ice changes |
publishDate |
2018 |
url |
http://nora.nerc.ac.uk/id/eprint/519617/ https://nora.nerc.ac.uk/id/eprint/519617/1/revised_manuscript.docx https://doi.org/10.1016/j.quascirev.2018.07.027 |
long_lat |
ENVELOPE(-26.750,-26.750,71.200,71.200) |
geographic |
Arctic Greenland Renland |
geographic_facet |
Arctic Greenland Renland |
genre |
Arctic Arctic Greenland GRIP ice core Ice Sheet NGRIP Sea ice |
genre_facet |
Arctic Arctic Greenland GRIP ice core Ice Sheet NGRIP Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/519617/1/revised_manuscript.docx Malmierca Vallet, Irene orcid:0000-0002-2871-9741 Sime, Louise C. orcid:0000-0002-9093-7926 Tindall, Julia C; Capron, Emilie orcid:0000-0003-0784-1884 Valdes, Paul J; Vinther, Bo M. 2018 Simulating the Last Interglacial Greenland stable water isotope peak: the role of Arctic sea ice changes. Quaternary Science Reviews, 198. 1-14. https://doi.org/10.1016/j.quascirev.2018.07.027 <https://doi.org/10.1016/j.quascirev.2018.07.027> |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.quascirev.2018.07.027 |
container_title |
Quaternary Science Reviews |
container_volume |
198 |
container_start_page |
1 |
op_container_end_page |
14 |
_version_ |
1766300977717051392 |