Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions
Temperature changes in Antarctica over the last millennium are investigated using proxy records, a set of simulations driven by natural and anthropogenic forcings and one simulation with data assimilation. Over Antarctica, a long term cooling trend in annual mean is simulated during the period 1000-...
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Online Access: | http://hdl.handle.net/2078.1/118326 https://doi.org/10.1016/j.quascirev.2012.09.003 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:118326 2024-05-19T07:31:31+00:00 Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions Goosse, Hugues Mairesse, Aurélien Mathiot, Pierre Philippon, Gwenaëlle UCL - SST/ELI/ELIC - Earth & Climate 2012 http://hdl.handle.net/2078.1/118326 https://doi.org/10.1016/j.quascirev.2012.09.003 eng eng Pergamon boreal:118326 http://hdl.handle.net/2078.1/118326 doi:10.1016/j.quascirev.2012.09.003 urn:ISSN:0277-3791 urn:EISSN:1873-457X info:eu-repo/semantics/openAccess Quaternary Science Reviews, Vol. 55, p. 75-90 (2012) CISM CECI Last Millennium Antactica Model-data comparison Data assimilation Reconstruction 1443 info:eu-repo/semantics/article 2012 ftunivlouvain https://doi.org/10.1016/j.quascirev.2012.09.003 2024-04-24T01:40:39Z Temperature changes in Antarctica over the last millennium are investigated using proxy records, a set of simulations driven by natural and anthropogenic forcings and one simulation with data assimilation. Over Antarctica, a long term cooling trend in annual mean is simulated during the period 1000-1850. The main contributor to this cooling trend is the volcanic forcing, astronomical forcing playing a dominant role at seasonal timescale. Since 1850, all the models produce an Antarctic warming in response to the increase in greenhouse gas concentrations. We present a composite of Antarctic temperature, calculated by averaging seven temperature records derived from isotope measurements in ice cores. This simple approach is supported by the coherency displayed between model results at these data grid points and Antarctic mean temperature. The composite shows a weak multi-centennial cooling trend during the pre-industrial period and a warming after 1850 that is broadly consistent with model results. In both data and simulations, large regional variations are superimposed on this common signal, at decadal to centennial timescales. The model results appear spatially more consistent than ice core records. We conclude that more records are needed to resolve the complex spatial distribution of Antarctic temperature variations during the last millennium. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core DIAL@UCLouvain (Université catholique de Louvain) Quaternary Science Reviews 55 75 90 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
CISM CECI Last Millennium Antactica Model-data comparison Data assimilation Reconstruction 1443 |
spellingShingle |
CISM CECI Last Millennium Antactica Model-data comparison Data assimilation Reconstruction 1443 Goosse, Hugues Mairesse, Aurélien Mathiot, Pierre Philippon, Gwenaëlle Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
topic_facet |
CISM CECI Last Millennium Antactica Model-data comparison Data assimilation Reconstruction 1443 |
description |
Temperature changes in Antarctica over the last millennium are investigated using proxy records, a set of simulations driven by natural and anthropogenic forcings and one simulation with data assimilation. Over Antarctica, a long term cooling trend in annual mean is simulated during the period 1000-1850. The main contributor to this cooling trend is the volcanic forcing, astronomical forcing playing a dominant role at seasonal timescale. Since 1850, all the models produce an Antarctic warming in response to the increase in greenhouse gas concentrations. We present a composite of Antarctic temperature, calculated by averaging seven temperature records derived from isotope measurements in ice cores. This simple approach is supported by the coherency displayed between model results at these data grid points and Antarctic mean temperature. The composite shows a weak multi-centennial cooling trend during the pre-industrial period and a warming after 1850 that is broadly consistent with model results. In both data and simulations, large regional variations are superimposed on this common signal, at decadal to centennial timescales. The model results appear spatially more consistent than ice core records. We conclude that more records are needed to resolve the complex spatial distribution of Antarctic temperature variations during the last millennium. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Goosse, Hugues Mairesse, Aurélien Mathiot, Pierre Philippon, Gwenaëlle |
author_facet |
Goosse, Hugues Mairesse, Aurélien Mathiot, Pierre Philippon, Gwenaëlle |
author_sort |
Goosse, Hugues |
title |
Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
title_short |
Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
title_full |
Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
title_fullStr |
Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
title_full_unstemmed |
Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
title_sort |
antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
publisher |
Pergamon |
publishDate |
2012 |
url |
http://hdl.handle.net/2078.1/118326 https://doi.org/10.1016/j.quascirev.2012.09.003 |
genre |
Antarc* Antarctic Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica ice core |
op_source |
Quaternary Science Reviews, Vol. 55, p. 75-90 (2012) |
op_relation |
boreal:118326 http://hdl.handle.net/2078.1/118326 doi:10.1016/j.quascirev.2012.09.003 urn:ISSN:0277-3791 urn:EISSN:1873-457X |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2012.09.003 |
container_title |
Quaternary Science Reviews |
container_volume |
55 |
container_start_page |
75 |
op_container_end_page |
90 |
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1799469379220406272 |