Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise
Elucidating the source(s) of Meltwater Pulse 1a, the largest rapid sea level rise caused by ice melt (14–18 m in less than 340 years, 14,600 years ago), is important for understanding mechanisms of rapid ice melt and the links with abrupt climate change. Here we quantify how much and by what mechani...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2016
|
Subjects: | |
Online Access: | https://hdl.handle.net/1983/22c856e3-add5-46e5-8d85-9a7dd438c6bc https://research-information.bris.ac.uk/en/publications/22c856e3-add5-46e5-8d85-9a7dd438c6bc https://doi.org/10.1002/2016GL070356 https://research-information.bris.ac.uk/ws/files/91241946/Gregoire_et_al_2016_Geophysical_Research_Letters.pdf https://research-information.bris.ac.uk/ws/files/91241948/grl54918_sup_0001_SI.pdf http://www.scopus.com/inward/record.url?scp=84987771060&partnerID=8YFLogxK |
id |
ftubristolcris:oai:research-information.bris.ac.uk:publications/22c856e3-add5-46e5-8d85-9a7dd438c6bc |
---|---|
record_format |
openpolar |
spelling |
ftubristolcris:oai:research-information.bris.ac.uk:publications/22c856e3-add5-46e5-8d85-9a7dd438c6bc 2024-05-19T07:42:03+00:00 Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise Gregoire, Lauren J Otto-Bliesner, Bette Valdes, Paul J Ivanovic, Ruza F 2016-09-16 application/pdf https://hdl.handle.net/1983/22c856e3-add5-46e5-8d85-9a7dd438c6bc https://research-information.bris.ac.uk/en/publications/22c856e3-add5-46e5-8d85-9a7dd438c6bc https://doi.org/10.1002/2016GL070356 https://research-information.bris.ac.uk/ws/files/91241946/Gregoire_et_al_2016_Geophysical_Research_Letters.pdf https://research-information.bris.ac.uk/ws/files/91241948/grl54918_sup_0001_SI.pdf http://www.scopus.com/inward/record.url?scp=84987771060&partnerID=8YFLogxK eng eng https://research-information.bris.ac.uk/en/publications/22c856e3-add5-46e5-8d85-9a7dd438c6bc info:eu-repo/semantics/openAccess Gregoire , L J , Otto-Bliesner , B , Valdes , P J & Ivanovic , R F 2016 , ' Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise ' , Geophysical Research Letters , vol. 43 , no. 17 , pp. 9130-9137 . https://doi.org/10.1002/2016GL070356 abrupt warming Bølling Meltwater Pulse 1a North American ice sheet sea level rise article 2016 ftubristolcris https://doi.org/10.1002/2016GL070356 2024-04-30T23:42:49Z Elucidating the source(s) of Meltwater Pulse 1a, the largest rapid sea level rise caused by ice melt (14–18 m in less than 340 years, 14,600 years ago), is important for understanding mechanisms of rapid ice melt and the links with abrupt climate change. Here we quantify how much and by what mechanisms the North American ice sheet could have contributed to Meltwater Pulse 1a, by driving an ice sheet model with two transient climate simulations of the last 21,000 years. Ice sheet perturbed physics ensembles were run to account for model uncertainties, constraining ice extent and volume with reconstructions of 21,000 years ago to present. We determine that the North American ice sheet produced 3–4 m global mean sea level rise in 340 years due to the abrupt Bølling warming, but this response is amplified to 5–6 m when it triggers the ice sheet saddle collapse. Article in Journal/Newspaper Ice Sheet University of Bristol: Bristol Research Geophysical Research Letters 43 17 9130 9137 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
abrupt warming Bølling Meltwater Pulse 1a North American ice sheet sea level rise |
spellingShingle |
abrupt warming Bølling Meltwater Pulse 1a North American ice sheet sea level rise Gregoire, Lauren J Otto-Bliesner, Bette Valdes, Paul J Ivanovic, Ruza F Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise |
topic_facet |
abrupt warming Bølling Meltwater Pulse 1a North American ice sheet sea level rise |
description |
Elucidating the source(s) of Meltwater Pulse 1a, the largest rapid sea level rise caused by ice melt (14–18 m in less than 340 years, 14,600 years ago), is important for understanding mechanisms of rapid ice melt and the links with abrupt climate change. Here we quantify how much and by what mechanisms the North American ice sheet could have contributed to Meltwater Pulse 1a, by driving an ice sheet model with two transient climate simulations of the last 21,000 years. Ice sheet perturbed physics ensembles were run to account for model uncertainties, constraining ice extent and volume with reconstructions of 21,000 years ago to present. We determine that the North American ice sheet produced 3–4 m global mean sea level rise in 340 years due to the abrupt Bølling warming, but this response is amplified to 5–6 m when it triggers the ice sheet saddle collapse. |
format |
Article in Journal/Newspaper |
author |
Gregoire, Lauren J Otto-Bliesner, Bette Valdes, Paul J Ivanovic, Ruza F |
author_facet |
Gregoire, Lauren J Otto-Bliesner, Bette Valdes, Paul J Ivanovic, Ruza F |
author_sort |
Gregoire, Lauren J |
title |
Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise |
title_short |
Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise |
title_full |
Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise |
title_fullStr |
Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise |
title_full_unstemmed |
Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise |
title_sort |
abrupt bølling warming and ice saddle collapse contributions to the meltwater pulse 1a rapid sea level rise |
publishDate |
2016 |
url |
https://hdl.handle.net/1983/22c856e3-add5-46e5-8d85-9a7dd438c6bc https://research-information.bris.ac.uk/en/publications/22c856e3-add5-46e5-8d85-9a7dd438c6bc https://doi.org/10.1002/2016GL070356 https://research-information.bris.ac.uk/ws/files/91241946/Gregoire_et_al_2016_Geophysical_Research_Letters.pdf https://research-information.bris.ac.uk/ws/files/91241948/grl54918_sup_0001_SI.pdf http://www.scopus.com/inward/record.url?scp=84987771060&partnerID=8YFLogxK |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Gregoire , L J , Otto-Bliesner , B , Valdes , P J & Ivanovic , R F 2016 , ' Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise ' , Geophysical Research Letters , vol. 43 , no. 17 , pp. 9130-9137 . https://doi.org/10.1002/2016GL070356 |
op_relation |
https://research-information.bris.ac.uk/en/publications/22c856e3-add5-46e5-8d85-9a7dd438c6bc |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2016GL070356 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
17 |
container_start_page |
9130 |
op_container_end_page |
9137 |
_version_ |
1799481670249742336 |