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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ftdoajarticles:oai:doaj.org/article:d5526f2304cf4b0abeae10492f9e2b85 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 V. Varma M. Prange M. Schulz 2016-11-01T00:00:00Z https://doi.org/10.5194/gmd-9-3859-2016 https://doaj.org/article/d5526f2304cf4b0abeae10492f9e2b85 EN eng Copernicus Publications https://www.geosci-model-dev.net/9/3859/2016/gmd-9-3859-2016.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-9-3859-2016 1991-959X 1991-9603 https://doaj.org/article/d5526f2304cf4b0abeae10492f9e2b85 Geoscientific Model Development, Vol 9, Pp 3859-3873 (2016) Geology QE1-996.5 article 2016 ftdoajarticles https://doi.org/10.5194/gmd-9-3859-2016 2022-12-31T13:32:57Z 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 Directory of Open Access Journals: DOAJ Articles Southern Ocean Geoscientific Model Development 9 11 3859 3873 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
Geology QE1-996.5 |
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Geology QE1-996.5 V. Varma M. Prange M. Schulz Transient simulations of the present and the last interglacial climate using the Community Climate System Model version 3: effects of orbital acceleration |
topic_facet |
Geology QE1-996.5 |
description |
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 |
V. Varma M. Prange M. Schulz |
author_facet |
V. Varma M. Prange M. Schulz |
author_sort |
V. Varma |
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 |
publishDate |
2016 |
url |
https://doi.org/10.5194/gmd-9-3859-2016 https://doaj.org/article/d5526f2304cf4b0abeae10492f9e2b85 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Nordic Seas Southern Ocean |
genre_facet |
Nordic Seas Southern Ocean |
op_source |
Geoscientific Model Development, Vol 9, Pp 3859-3873 (2016) |
op_relation |
https://www.geosci-model-dev.net/9/3859/2016/gmd-9-3859-2016.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-9-3859-2016 1991-959X 1991-9603 https://doaj.org/article/d5526f2304cf4b0abeae10492f9e2b85 |
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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