Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration
Numerical simulations provide a considerable aid in studying past climates. Out of the various approaches taken in designing numerical climate experiments, transient simulations have been found to be the most optimal when it comes to comparison with proxy data. However, multi-millennial or longer si...
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Copernicus Publications (EGU)
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ftoceanrep:oai:oceanrep.geomar.de:44281 2023-05-15T17:24:22+02:00 Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration Varma, Vidya Prange, Matthias Schulz, Michael 2016-11-01 text https://oceanrep.geomar.de/id/eprint/44281/ https://oceanrep.geomar.de/id/eprint/44281/1/gmd-9-3859-2016.pdf https://doi.org/10.5194/gmd-9-3859-2016 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/44281/1/gmd-9-3859-2016.pdf Varma, V., Prange, M. and Schulz, M. (2016) Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration. Open Access Geoscientific Model Development, 9 (11). pp. 3859-3873. DOI 10.5194/gmd-9-3859-2016 <https://doi.org/10.5194/gmd-9-3859-2016>. doi:10.5194/gmd-9-3859-2016 cc_by_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.5194/gmd-9-3859-2016 2023-04-07T15:41:22Z Numerical simulations provide a considerable aid in studying past climates. Out of the various approaches taken in designing numerical climate experiments, transient simulations have been found to be the most optimal when it comes to comparison with proxy data. However, multi-millennial or longer simulations using fully coupled general circulation models are computationally very expensive such that acceleration techniques are frequently applied. In this study, we compare the results from transient simulations of the present and the last interglacial with and without acceleration of the orbital forcing, using the comprehensive coupled climate model CCSM3 (Community Climate System Model version 3). Our study shows that in low-latitude regions, the simulation of long-term variations in interglacial surface climate is not significantly affected by the use of the acceleration technique (with an acceleration factor of 10) and hence, large-scale model–data comparison of surface variables is not hampered. However, in high-latitude regions where the surface climate has a direct connection to the deep ocean, e.g. in the Southern Ocean or the Nordic Seas, acceleration-induced biases in sea-surface temperature evolution may occur with potential influence on the dynamics of the overlying atmosphere. Article in Journal/Newspaper Nordic Seas Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Southern Ocean Geoscientific Model Development 9 11 3859 3873 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
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English |
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Numerical simulations provide a considerable aid in studying past climates. Out of the various approaches taken in designing numerical climate experiments, transient simulations have been found to be the most optimal when it comes to comparison with proxy data. However, multi-millennial or longer simulations using fully coupled general circulation models are computationally very expensive such that acceleration techniques are frequently applied. In this study, we compare the results from transient simulations of the present and the last interglacial with and without acceleration of the orbital forcing, using the comprehensive coupled climate model CCSM3 (Community Climate System Model version 3). Our study shows that in low-latitude regions, the simulation of long-term variations in interglacial surface climate is not significantly affected by the use of the acceleration technique (with an acceleration factor of 10) and hence, large-scale model–data comparison of surface variables is not hampered. However, in high-latitude regions where the surface climate has a direct connection to the deep ocean, e.g. in the Southern Ocean or the Nordic Seas, acceleration-induced biases in sea-surface temperature evolution may occur with potential influence on the dynamics of the overlying atmosphere. |
format |
Article in Journal/Newspaper |
author |
Varma, Vidya Prange, Matthias Schulz, Michael |
spellingShingle |
Varma, Vidya Prange, Matthias Schulz, Michael Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration |
author_facet |
Varma, Vidya Prange, Matthias Schulz, Michael |
author_sort |
Varma, Vidya |
title |
Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration |
title_short |
Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration |
title_full |
Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration |
title_fullStr |
Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration |
title_full_unstemmed |
Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration |
title_sort |
transient simulations of the present and the last interglacial climate using the community climate system model version 3: effects of orbital acceleration |
publisher |
Copernicus Publications (EGU) |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/44281/ https://oceanrep.geomar.de/id/eprint/44281/1/gmd-9-3859-2016.pdf https://doi.org/10.5194/gmd-9-3859-2016 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Nordic Seas Southern Ocean |
genre_facet |
Nordic Seas Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/44281/1/gmd-9-3859-2016.pdf Varma, V., Prange, M. and Schulz, M. (2016) Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration. Open Access Geoscientific Model Development, 9 (11). pp. 3859-3873. DOI 10.5194/gmd-9-3859-2016 <https://doi.org/10.5194/gmd-9-3859-2016>. doi:10.5194/gmd-9-3859-2016 |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gmd-9-3859-2016 |
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Geoscientific Model Development |
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9 |
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11 |
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3859 |
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3873 |
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