Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model
The mid-Piacenzian warm period (3.264 to 3.025 Ma) is the most recent geological period with present-like atmospheric pCO2 and is thus expected to have exhibited a warm climate similar to or warmer than the present day. On the basis of understanding that has been gathered on the climate variability...
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Copernicus Publications
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00049984 2023-05-15T16:30:04+02:00 Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model Tan, Ning Contoux, Camille Ramstein, Gilles Sun, Yong Dumas, Christophe Sepulchre, Pierre Guo, Zhengtang 2020-01 electronic https://doi.org/10.5194/cp-16-1-2020 https://noa.gwlb.de/receive/cop_mods_00049984 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049601/cp-16-1-2020.pdf https://cp.copernicus.org/articles/16/1/2020/cp-16-1-2020.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-16-1-2020 https://noa.gwlb.de/receive/cop_mods_00049984 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049601/cp-16-1-2020.pdf https://cp.copernicus.org/articles/16/1/2020/cp-16-1-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/cp-16-1-2020 2022-02-08T22:37:05Z The mid-Piacenzian warm period (3.264 to 3.025 Ma) is the most recent geological period with present-like atmospheric pCO2 and is thus expected to have exhibited a warm climate similar to or warmer than the present day. On the basis of understanding that has been gathered on the climate variability of this interval, a specific interglacial (Marine Isotope Stage KM5c, MIS KM5c; 3.205 Ma) has been selected for the Pliocene Model Intercomparison Project phase 2 (PlioMIP 2). We carried out a series of experiments according to the design of PlioMIP2 with two versions of the Institut Pierre Simon Laplace (IPSL) atmosphere–ocean coupled general circulation model (AOGCM): IPSL-CM5A and IPSL-CM5A2. Compared to the PlioMIP 1 experiment, run with IPSL-CM5A, our results show that the simulated MIS KM5c climate presents enhanced warming in mid- to high latitudes, especially over oceanic regions. This warming can be largely attributed to the enhanced Atlantic Meridional Overturning Circulation caused by the high-latitude seaway changes. The sensitivity experiments, conducted with IPSL-CM5A2, show that besides the increased pCO2, both modified orography and reduced ice sheets contribute substantially to mid- to high latitude warming in MIS KM5c. When considering the pCO2 uncertainties ( +/-50 ppmv) during the Pliocene, the response of the modeled mean annual surface air temperature to changes to pCO2 ( +/-50 ppmv) is not symmetric, which is likely due to the nonlinear response of the cryosphere (snow cover and sea ice extent). By analyzing the Greenland Ice Sheet surface mass balance, we also demonstrate its vulnerability under both MIS KM5c and modern warm climate. Article in Journal/Newspaper Greenland Ice Sheet Sea ice Niedersächsisches Online-Archiv NOA Greenland Laplace ENVELOPE(141.467,141.467,-66.782,-66.782) Climate of the Past 16 1 1 16 |
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Niedersächsisches Online-Archiv NOA |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Tan, Ning Contoux, Camille Ramstein, Gilles Sun, Yong Dumas, Christophe Sepulchre, Pierre Guo, Zhengtang Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model |
topic_facet |
article Verlagsveröffentlichung |
description |
The mid-Piacenzian warm period (3.264 to 3.025 Ma) is the most recent geological period with present-like atmospheric pCO2 and is thus expected to have exhibited a warm climate similar to or warmer than the present day. On the basis of understanding that has been gathered on the climate variability of this interval, a specific interglacial (Marine Isotope Stage KM5c, MIS KM5c; 3.205 Ma) has been selected for the Pliocene Model Intercomparison Project phase 2 (PlioMIP 2). We carried out a series of experiments according to the design of PlioMIP2 with two versions of the Institut Pierre Simon Laplace (IPSL) atmosphere–ocean coupled general circulation model (AOGCM): IPSL-CM5A and IPSL-CM5A2. Compared to the PlioMIP 1 experiment, run with IPSL-CM5A, our results show that the simulated MIS KM5c climate presents enhanced warming in mid- to high latitudes, especially over oceanic regions. This warming can be largely attributed to the enhanced Atlantic Meridional Overturning Circulation caused by the high-latitude seaway changes. The sensitivity experiments, conducted with IPSL-CM5A2, show that besides the increased pCO2, both modified orography and reduced ice sheets contribute substantially to mid- to high latitude warming in MIS KM5c. When considering the pCO2 uncertainties ( +/-50 ppmv) during the Pliocene, the response of the modeled mean annual surface air temperature to changes to pCO2 ( +/-50 ppmv) is not symmetric, which is likely due to the nonlinear response of the cryosphere (snow cover and sea ice extent). By analyzing the Greenland Ice Sheet surface mass balance, we also demonstrate its vulnerability under both MIS KM5c and modern warm climate. |
format |
Article in Journal/Newspaper |
author |
Tan, Ning Contoux, Camille Ramstein, Gilles Sun, Yong Dumas, Christophe Sepulchre, Pierre Guo, Zhengtang |
author_facet |
Tan, Ning Contoux, Camille Ramstein, Gilles Sun, Yong Dumas, Christophe Sepulchre, Pierre Guo, Zhengtang |
author_sort |
Tan, Ning |
title |
Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model |
title_short |
Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model |
title_full |
Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model |
title_fullStr |
Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model |
title_full_unstemmed |
Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere–ocean coupled general circulation model |
title_sort |
modeling a modern-like pco2 warm period (marine isotope stage km5c) with two versions of an institut pierre simon laplace atmosphere–ocean coupled general circulation model |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/cp-16-1-2020 https://noa.gwlb.de/receive/cop_mods_00049984 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049601/cp-16-1-2020.pdf https://cp.copernicus.org/articles/16/1/2020/cp-16-1-2020.pdf |
long_lat |
ENVELOPE(141.467,141.467,-66.782,-66.782) |
geographic |
Greenland Laplace |
geographic_facet |
Greenland Laplace |
genre |
Greenland Ice Sheet Sea ice |
genre_facet |
Greenland Ice Sheet Sea ice |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-16-1-2020 https://noa.gwlb.de/receive/cop_mods_00049984 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049601/cp-16-1-2020.pdf https://cp.copernicus.org/articles/16/1/2020/cp-16-1-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/cp-16-1-2020 |
container_title |
Climate of the Past |
container_volume |
16 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
16 |
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