Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions
International audience The last deglaciation, which marked the transition between the last glacial and present interglacial periods, was punctuated by a series of rapid (centennial and decadal) climate changes. Numerical climate models are useful for investigating mechanisms that underpin the events...
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ftceafr:oai:HAL:hal-04114710v1 2024-09-15T18:12:15+00:00 Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions Ivanovic, R. F. Gregoire, L. J. Kageyama, M. Roche, Didier M. Valdes, P. J. Burke, A. Drummond, R. Peltier, W. R. Tarasov, L. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) 2023-06-02 https://hal.science/hal-04114710 https://doi.org/10.5194/gmdd-8-9045-2015 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/gmdd-8-9045-2015 hal-04114710 https://hal.science/hal-04114710 BIBCODE: 2015GMDD.8.9045I doi:10.5194/gmdd-8-9045-2015 https://hal.science/hal-04114710 2023 [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftceafr https://doi.org/10.5194/gmdd-8-9045-2015 2024-07-22T13:06:14Z International audience The last deglaciation, which marked the transition between the last glacial and present interglacial periods, was punctuated by a series of rapid (centennial and decadal) climate changes. Numerical climate models are useful for investigating mechanisms that underpin the events, especially now that some of the complex models can be run for multiple millennia. We have set up a Paleoclimate Modelling Intercomparison Project (PMIP) working group to coordinate efforts to run transient simulations of the last deglaciation, and to facilitate the dissemination of expertise between modellers and those engaged with reconstructing the climate of the last 21 thousand years. Here, we present the design of a coordinated Core simulation over the period 21-9 thousand years before present (ka) with time varying orbital forcing, greenhouse gases, ice sheets, and other geographical changes. A choice of two ice sheet reconstructions is given, but no ice sheet or iceberg meltwater should be prescribed in the Core simulation. Additional focussed simulations will also be coordinated on an ad-hoc basis by the working group, for example to investigate the effect of ice sheet and iceberg meltwater, and the uncertainty in other forcings. Some of these focussed simulations will focus on shorter durations around specific events to allow the more computationally expensive models to take part. Report Ice Sheet HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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ftceafr |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Ivanovic, R. F. Gregoire, L. J. Kageyama, M. Roche, Didier M. Valdes, P. J. Burke, A. Drummond, R. Peltier, W. R. Tarasov, L. Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience The last deglaciation, which marked the transition between the last glacial and present interglacial periods, was punctuated by a series of rapid (centennial and decadal) climate changes. Numerical climate models are useful for investigating mechanisms that underpin the events, especially now that some of the complex models can be run for multiple millennia. We have set up a Paleoclimate Modelling Intercomparison Project (PMIP) working group to coordinate efforts to run transient simulations of the last deglaciation, and to facilitate the dissemination of expertise between modellers and those engaged with reconstructing the climate of the last 21 thousand years. Here, we present the design of a coordinated Core simulation over the period 21-9 thousand years before present (ka) with time varying orbital forcing, greenhouse gases, ice sheets, and other geographical changes. A choice of two ice sheet reconstructions is given, but no ice sheet or iceberg meltwater should be prescribed in the Core simulation. Additional focussed simulations will also be coordinated on an ad-hoc basis by the working group, for example to investigate the effect of ice sheet and iceberg meltwater, and the uncertainty in other forcings. Some of these focussed simulations will focus on shorter durations around specific events to allow the more computationally expensive models to take part. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) |
format |
Report |
author |
Ivanovic, R. F. Gregoire, L. J. Kageyama, M. Roche, Didier M. Valdes, P. J. Burke, A. Drummond, R. Peltier, W. R. Tarasov, L. |
author_facet |
Ivanovic, R. F. Gregoire, L. J. Kageyama, M. Roche, Didier M. Valdes, P. J. Burke, A. Drummond, R. Peltier, W. R. Tarasov, L. |
author_sort |
Ivanovic, R. F. |
title |
Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions |
title_short |
Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions |
title_full |
Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions |
title_fullStr |
Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions |
title_full_unstemmed |
Transient climate simulations of the deglaciation 21-9 thousand years before present; PMIP4 Core experiment design and boundary conditions |
title_sort |
transient climate simulations of the deglaciation 21-9 thousand years before present; pmip4 core experiment design and boundary conditions |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04114710 https://doi.org/10.5194/gmdd-8-9045-2015 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
https://hal.science/hal-04114710 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/gmdd-8-9045-2015 hal-04114710 https://hal.science/hal-04114710 BIBCODE: 2015GMDD.8.9045I doi:10.5194/gmdd-8-9045-2015 |
op_doi |
https://doi.org/10.5194/gmdd-8-9045-2015 |
_version_ |
1810449839415099392 |