Using palaeo-climate comparisons to constrain future projections in CMIP5
We present a selection of methodologies for using the palaeo-climate model component of the Coupled Model Intercomparison Project (Phase 5) (CMIP5) to attempt to constrain future climate projections using the same models. The constraints arise from measures of skill in hindcasting palaeo-climate cha...
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Online Access: | https://doi.org/10.5194/cp-10-221-2014 http://www.clim-past.net/10/221/2014/cp-10-221-2014.pdf https://doaj.org/article/801dbab909ba47298b902c53a2bd1103 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:801dbab909ba47298b902c53a2bd1103 2023-05-15T18:18:34+02:00 Using palaeo-climate comparisons to constrain future projections in CMIP5 G. A. Schmidt J. D. Annan P. J. Bartlein B. I. Cook E. Guilyardi J. C. Hargreaves S. P. Harrison M. Kageyama A. N. LeGrande B. Konecky S. Lovejoy M. E. Mann V. Masson-Delmotte C. Risi D. Thompson A. Timmermann L.-B. Tremblay P. Yiou 2014-02-01 https://doi.org/10.5194/cp-10-221-2014 http://www.clim-past.net/10/221/2014/cp-10-221-2014.pdf https://doaj.org/article/801dbab909ba47298b902c53a2bd1103 en eng Copernicus Publications 1814-9324 1814-9332 doi:10.5194/cp-10-221-2014 http://www.clim-past.net/10/221/2014/cp-10-221-2014.pdf https://doaj.org/article/801dbab909ba47298b902c53a2bd1103 undefined Climate of the Past, Vol 10, Iss 1, Pp 221-250 (2014) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.5194/cp-10-221-2014 2023-01-22T18:10:35Z We present a selection of methodologies for using the palaeo-climate model component of the Coupled Model Intercomparison Project (Phase 5) (CMIP5) to attempt to constrain future climate projections using the same models. The constraints arise from measures of skill in hindcasting palaeo-climate changes from the present over three periods: the Last Glacial Maximum (LGM) (21 000 yr before present, ka), the mid-Holocene (MH) (6 ka) and the Last Millennium (LM) (850–1850 CE). The skill measures may be used to validate robust patterns of climate change across scenarios or to distinguish between models that have differing outcomes in future scenarios. We find that the multi-model ensemble of palaeo-simulations is adequate for addressing at least some of these issues. For example, selected benchmarks for the LGM and MH are correlated to the rank of future projections of precipitation/temperature or sea ice extent to indicate that models that produce the best agreement with palaeo-climate information give demonstrably different future results than the rest of the models. We also explore cases where comparisons are strongly dependent on uncertain forcing time series or show important non-stationarity, making direct inferences for the future problematic. Overall, we demonstrate that there is a strong potential for the palaeo-climate simulations to help inform the future projections and urge all the modelling groups to complete this subset of the CMIP5 runs. Article in Journal/Newspaper Sea ice Unknown Climate of the Past 10 1 221 250 |
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language |
English |
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geo envir |
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geo envir G. A. Schmidt J. D. Annan P. J. Bartlein B. I. Cook E. Guilyardi J. C. Hargreaves S. P. Harrison M. Kageyama A. N. LeGrande B. Konecky S. Lovejoy M. E. Mann V. Masson-Delmotte C. Risi D. Thompson A. Timmermann L.-B. Tremblay P. Yiou Using palaeo-climate comparisons to constrain future projections in CMIP5 |
topic_facet |
geo envir |
description |
We present a selection of methodologies for using the palaeo-climate model component of the Coupled Model Intercomparison Project (Phase 5) (CMIP5) to attempt to constrain future climate projections using the same models. The constraints arise from measures of skill in hindcasting palaeo-climate changes from the present over three periods: the Last Glacial Maximum (LGM) (21 000 yr before present, ka), the mid-Holocene (MH) (6 ka) and the Last Millennium (LM) (850–1850 CE). The skill measures may be used to validate robust patterns of climate change across scenarios or to distinguish between models that have differing outcomes in future scenarios. We find that the multi-model ensemble of palaeo-simulations is adequate for addressing at least some of these issues. For example, selected benchmarks for the LGM and MH are correlated to the rank of future projections of precipitation/temperature or sea ice extent to indicate that models that produce the best agreement with palaeo-climate information give demonstrably different future results than the rest of the models. We also explore cases where comparisons are strongly dependent on uncertain forcing time series or show important non-stationarity, making direct inferences for the future problematic. Overall, we demonstrate that there is a strong potential for the palaeo-climate simulations to help inform the future projections and urge all the modelling groups to complete this subset of the CMIP5 runs. |
format |
Article in Journal/Newspaper |
author |
G. A. Schmidt J. D. Annan P. J. Bartlein B. I. Cook E. Guilyardi J. C. Hargreaves S. P. Harrison M. Kageyama A. N. LeGrande B. Konecky S. Lovejoy M. E. Mann V. Masson-Delmotte C. Risi D. Thompson A. Timmermann L.-B. Tremblay P. Yiou |
author_facet |
G. A. Schmidt J. D. Annan P. J. Bartlein B. I. Cook E. Guilyardi J. C. Hargreaves S. P. Harrison M. Kageyama A. N. LeGrande B. Konecky S. Lovejoy M. E. Mann V. Masson-Delmotte C. Risi D. Thompson A. Timmermann L.-B. Tremblay P. Yiou |
author_sort |
G. A. Schmidt |
title |
Using palaeo-climate comparisons to constrain future projections in CMIP5 |
title_short |
Using palaeo-climate comparisons to constrain future projections in CMIP5 |
title_full |
Using palaeo-climate comparisons to constrain future projections in CMIP5 |
title_fullStr |
Using palaeo-climate comparisons to constrain future projections in CMIP5 |
title_full_unstemmed |
Using palaeo-climate comparisons to constrain future projections in CMIP5 |
title_sort |
using palaeo-climate comparisons to constrain future projections in cmip5 |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/cp-10-221-2014 http://www.clim-past.net/10/221/2014/cp-10-221-2014.pdf https://doaj.org/article/801dbab909ba47298b902c53a2bd1103 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Climate of the Past, Vol 10, Iss 1, Pp 221-250 (2014) |
op_relation |
1814-9324 1814-9332 doi:10.5194/cp-10-221-2014 http://www.clim-past.net/10/221/2014/cp-10-221-2014.pdf https://doaj.org/article/801dbab909ba47298b902c53a2bd1103 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-10-221-2014 |
container_title |
Climate of the Past |
container_volume |
10 |
container_issue |
1 |
container_start_page |
221 |
op_container_end_page |
250 |
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1766195177799548928 |