A new global ice sheet reconstruction for the past 80 000 years
The evolution of past global ice sheets is highly uncertain. One example is the missing ice problem during the Last Glacial Maximum (LGM, 26 000-19 000 years before present) – an apparent 8-28 m discrepancy between far-field sea level indicators and modelled sea level from ice sheet reconstructions....
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Online Access: | http://hdl.handle.net/10278/3747429 https://doi.org/10.1038/s41467-021-21469-w |
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ftuniveneziairis:oai:iris.unive.it:10278/3747429 2024-04-14T08:13:09+00:00 A new global ice sheet reconstruction for the past 80 000 years Gowan, Evan J. Zhang, Xu Khosravi, Sara Rovere, Alessio Stocchi, Paolo Hughes, Anna L. C. Gyllencreutz, Richard Mangerud, Jan Svendsen, John-Inge Lohmann, Gerrit Gowan, Evan J. Zhang, Xu Khosravi, Sara Rovere, Alessio Stocchi, Paolo Hughes, Anna L. C. Gyllencreutz, Richard Mangerud, Jan Svendsen, John-Inge Lohmann, Gerrit 2021 http://hdl.handle.net/10278/3747429 https://doi.org/10.1038/s41467-021-21469-w unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000623786100001 volume:12 issue:1 journal:NATURE COMMUNICATIONS http://hdl.handle.net/10278/3747429 doi:10.1038/s41467-021-21469-w info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85100409350 info:eu-repo/semantics/openAccess Settore GEO/04 - Geografia Fisica e Geomorfologia info:eu-repo/semantics/article 2021 ftuniveneziairis https://doi.org/10.1038/s41467-021-21469-w 2024-03-21T18:20:11Z The evolution of past global ice sheets is highly uncertain. One example is the missing ice problem during the Last Glacial Maximum (LGM, 26 000-19 000 years before present) – an apparent 8-28 m discrepancy between far-field sea level indicators and modelled sea level from ice sheet reconstructions. In the absence of ice sheet reconstructions, researchers often use marine δ18O proxy records to infer ice volume prior to the LGM. We present a global ice sheet reconstruction for the past 80 000 years, called PaleoMIST 1.0, constructed independently of far-field sea level and δ18O proxy records. Our reconstruction is compatible with LGM far-field sea-level records without requiring extra ice volume, thus solving the missing ice problem. However, for Marine Isotope Stage 3 (57 000-29 000 years before present) - a pre-LGM period - our reconstruction does not match proxy-based sea level reconstructions, indicating the relationship between marine δ18O and sea level may be more complex than assumed. Article in Journal/Newspaper Ice Sheet Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Nature Communications 12 1 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
unknown |
topic |
Settore GEO/04 - Geografia Fisica e Geomorfologia |
spellingShingle |
Settore GEO/04 - Geografia Fisica e Geomorfologia Gowan, Evan J. Zhang, Xu Khosravi, Sara Rovere, Alessio Stocchi, Paolo Hughes, Anna L. C. Gyllencreutz, Richard Mangerud, Jan Svendsen, John-Inge Lohmann, Gerrit A new global ice sheet reconstruction for the past 80 000 years |
topic_facet |
Settore GEO/04 - Geografia Fisica e Geomorfologia |
description |
The evolution of past global ice sheets is highly uncertain. One example is the missing ice problem during the Last Glacial Maximum (LGM, 26 000-19 000 years before present) – an apparent 8-28 m discrepancy between far-field sea level indicators and modelled sea level from ice sheet reconstructions. In the absence of ice sheet reconstructions, researchers often use marine δ18O proxy records to infer ice volume prior to the LGM. We present a global ice sheet reconstruction for the past 80 000 years, called PaleoMIST 1.0, constructed independently of far-field sea level and δ18O proxy records. Our reconstruction is compatible with LGM far-field sea-level records without requiring extra ice volume, thus solving the missing ice problem. However, for Marine Isotope Stage 3 (57 000-29 000 years before present) - a pre-LGM period - our reconstruction does not match proxy-based sea level reconstructions, indicating the relationship between marine δ18O and sea level may be more complex than assumed. |
author2 |
Gowan, Evan J. Zhang, Xu Khosravi, Sara Rovere, Alessio Stocchi, Paolo Hughes, Anna L. C. Gyllencreutz, Richard Mangerud, Jan Svendsen, John-Inge Lohmann, Gerrit |
format |
Article in Journal/Newspaper |
author |
Gowan, Evan J. Zhang, Xu Khosravi, Sara Rovere, Alessio Stocchi, Paolo Hughes, Anna L. C. Gyllencreutz, Richard Mangerud, Jan Svendsen, John-Inge Lohmann, Gerrit |
author_facet |
Gowan, Evan J. Zhang, Xu Khosravi, Sara Rovere, Alessio Stocchi, Paolo Hughes, Anna L. C. Gyllencreutz, Richard Mangerud, Jan Svendsen, John-Inge Lohmann, Gerrit |
author_sort |
Gowan, Evan J. |
title |
A new global ice sheet reconstruction for the past 80 000 years |
title_short |
A new global ice sheet reconstruction for the past 80 000 years |
title_full |
A new global ice sheet reconstruction for the past 80 000 years |
title_fullStr |
A new global ice sheet reconstruction for the past 80 000 years |
title_full_unstemmed |
A new global ice sheet reconstruction for the past 80 000 years |
title_sort |
new global ice sheet reconstruction for the past 80 000 years |
publishDate |
2021 |
url |
http://hdl.handle.net/10278/3747429 https://doi.org/10.1038/s41467-021-21469-w |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000623786100001 volume:12 issue:1 journal:NATURE COMMUNICATIONS http://hdl.handle.net/10278/3747429 doi:10.1038/s41467-021-21469-w info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85100409350 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-021-21469-w |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1796311071728861184 |