Equilibrium simulations of Marine Isotope Stage 3 climate
Abstract. An equilibrium simulation of Marine Isotope Stage 3 (MIS3) climate with boundary conditions characteristic of Greenland Interstadial 8 (GI-8; 38 kyr BP) is carried out with the Norwegian Earth System Model (NorESM). A computationally efficient configuration of the model enables long integr...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications under license by EGU – European Geosciences Union GmbH
2019
|
Subjects: | |
Online Access: | http://hdl.handle.net/10852/74510 http://urn.nb.no/URN:NBN:no-77623 https://doi.org/10.5194/cp-15-1133-2019 |
id |
ftoslouniv:oai:www.duo.uio.no:10852/74510 |
---|---|
record_format |
openpolar |
spelling |
ftoslouniv:oai:www.duo.uio.no:10852/74510 2023-05-15T13:57:09+02:00 Equilibrium simulations of Marine Isotope Stage 3 climate Guo, Chuncheng Nisancioglu, Kerim Hestnes Bentsen, Mats Bethke, Ingo Zhang, Zhongshi 2019-09-04T15:15:24Z http://hdl.handle.net/10852/74510 http://urn.nb.no/URN:NBN:no-77623 https://doi.org/10.5194/cp-15-1133-2019 EN eng Copernicus Publications under license by EGU – European Geosciences Union GmbH NOTUR/NORSTORE/NN4659K EC/FP7/610055 NFR/223272 http://urn.nb.no/URN:NBN:no-77623 Guo, Chuncheng Nisancioglu, Kerim Hestnes Bentsen, Mats Bethke, Ingo Zhang, Zhongshi . Equilibrium simulations of Marine Isotope Stage 3 climate. Climate of the Past. 2019, 15(3), 1133-1151 http://hdl.handle.net/10852/74510 1721578 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Climate of the Past&rft.volume=15&rft.spage=1133&rft.date=2019 Climate of the Past 15 3 1133 1151 https://doi.org/10.5194/cp-15-1133-2019 URN:NBN:no-77623 Fulltext https://www.duo.uio.no/bitstream/handle/10852/74510/1/cp-15-1133-2019.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1814-9324 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2019 ftoslouniv https://doi.org/10.5194/cp-15-1133-2019 2020-06-21T08:54:01Z Abstract. An equilibrium simulation of Marine Isotope Stage 3 (MIS3) climate with boundary conditions characteristic of Greenland Interstadial 8 (GI-8; 38 kyr BP) is carried out with the Norwegian Earth System Model (NorESM). A computationally efficient configuration of the model enables long integrations at relatively high resolution, with the simulations reaching a quasi-equilibrium state after 2500 years. We assess the characteristics of the simulated large-scale atmosphere and ocean circulation, precipitation, ocean hydrography, sea ice distribution, and internal variability. The simulated MIS3 interstadial near-surface air temperature is 2.9 ∘C cooler than the pre-industrial (PI). The Atlantic meridional overturning circulation (AMOC) is deeper and intensified by ∼13 %. There is a decrease in the volume of Antarctic Bottom Water (AABW) reaching the Atlantic. At the same time, there is an increase in ventilation of the Southern Ocean, associated with a significant expansion of Antarctic sea ice and concomitant intensified brine rejection, invigorating ocean convection. In the central Arctic, sea ice is ∼2 m thicker, with an expansion of sea ice in the Nordic Seas during winter. Attempts at triggering a non-linear transition to a cold stadial climate state, by varying atmospheric CO2 concentrations and Laurentide Ice Sheet height, suggest that the simulated MIS3 interstadial state in the NorESM is relatively stable, thus underscoring the role of model dependency, and questioning the existence of unforced abrupt transitions in Greenland climate in the absence of interactive ice sheet–meltwater dynamics. Article in Journal/Newspaper Antarc* Antarctic Arctic Greenland Ice Sheet Nordic Seas Sea ice Southern Ocean Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Antarctic Arctic Greenland Southern Ocean Climate of the Past 15 3 1133 1151 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract. An equilibrium simulation of Marine Isotope Stage 3 (MIS3) climate with boundary conditions characteristic of Greenland Interstadial 8 (GI-8; 38 kyr BP) is carried out with the Norwegian Earth System Model (NorESM). A computationally efficient configuration of the model enables long integrations at relatively high resolution, with the simulations reaching a quasi-equilibrium state after 2500 years. We assess the characteristics of the simulated large-scale atmosphere and ocean circulation, precipitation, ocean hydrography, sea ice distribution, and internal variability. The simulated MIS3 interstadial near-surface air temperature is 2.9 ∘C cooler than the pre-industrial (PI). The Atlantic meridional overturning circulation (AMOC) is deeper and intensified by ∼13 %. There is a decrease in the volume of Antarctic Bottom Water (AABW) reaching the Atlantic. At the same time, there is an increase in ventilation of the Southern Ocean, associated with a significant expansion of Antarctic sea ice and concomitant intensified brine rejection, invigorating ocean convection. In the central Arctic, sea ice is ∼2 m thicker, with an expansion of sea ice in the Nordic Seas during winter. Attempts at triggering a non-linear transition to a cold stadial climate state, by varying atmospheric CO2 concentrations and Laurentide Ice Sheet height, suggest that the simulated MIS3 interstadial state in the NorESM is relatively stable, thus underscoring the role of model dependency, and questioning the existence of unforced abrupt transitions in Greenland climate in the absence of interactive ice sheet–meltwater dynamics. |
format |
Article in Journal/Newspaper |
author |
Guo, Chuncheng Nisancioglu, Kerim Hestnes Bentsen, Mats Bethke, Ingo Zhang, Zhongshi |
spellingShingle |
Guo, Chuncheng Nisancioglu, Kerim Hestnes Bentsen, Mats Bethke, Ingo Zhang, Zhongshi Equilibrium simulations of Marine Isotope Stage 3 climate |
author_facet |
Guo, Chuncheng Nisancioglu, Kerim Hestnes Bentsen, Mats Bethke, Ingo Zhang, Zhongshi |
author_sort |
Guo, Chuncheng |
title |
Equilibrium simulations of Marine Isotope Stage 3 climate |
title_short |
Equilibrium simulations of Marine Isotope Stage 3 climate |
title_full |
Equilibrium simulations of Marine Isotope Stage 3 climate |
title_fullStr |
Equilibrium simulations of Marine Isotope Stage 3 climate |
title_full_unstemmed |
Equilibrium simulations of Marine Isotope Stage 3 climate |
title_sort |
equilibrium simulations of marine isotope stage 3 climate |
publisher |
Copernicus Publications under license by EGU – European Geosciences Union GmbH |
publishDate |
2019 |
url |
http://hdl.handle.net/10852/74510 http://urn.nb.no/URN:NBN:no-77623 https://doi.org/10.5194/cp-15-1133-2019 |
geographic |
Antarctic Arctic Greenland Southern Ocean |
geographic_facet |
Antarctic Arctic Greenland Southern Ocean |
genre |
Antarc* Antarctic Arctic Greenland Ice Sheet Nordic Seas Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Arctic Greenland Ice Sheet Nordic Seas Sea ice Southern Ocean |
op_source |
1814-9324 |
op_relation |
NOTUR/NORSTORE/NN4659K EC/FP7/610055 NFR/223272 http://urn.nb.no/URN:NBN:no-77623 Guo, Chuncheng Nisancioglu, Kerim Hestnes Bentsen, Mats Bethke, Ingo Zhang, Zhongshi . Equilibrium simulations of Marine Isotope Stage 3 climate. Climate of the Past. 2019, 15(3), 1133-1151 http://hdl.handle.net/10852/74510 1721578 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Climate of the Past&rft.volume=15&rft.spage=1133&rft.date=2019 Climate of the Past 15 3 1133 1151 https://doi.org/10.5194/cp-15-1133-2019 URN:NBN:no-77623 Fulltext https://www.duo.uio.no/bitstream/handle/10852/74510/1/cp-15-1133-2019.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-15-1133-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
3 |
container_start_page |
1133 |
op_container_end_page |
1151 |
_version_ |
1766264754544836608 |