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 1000e...
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Online Access: | http://hdl.handle.net/10278/42761 https://doi.org/10.1016/j.quascirev.2012.09.003 |
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ftuniveneziairis:oai:iris.unive.it:10278/42761 2024-04-14T08:04:29+00:00 Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions Goosse H. Braida M. Crosta X. Mairesse A. Masson Delmotte V. Mathiot P. Neukom R. Oerter H. Philippon G. Renssen H. van Ommen T. Verleyen E. STENNI, Barbara Goosse, H. Braida, M. Crosta, X. Mairesse, A. Masson Delmotte, V. Mathiot, P. Neukom, R. Oerter, H. Philippon, G. Renssen, H. Stenni, Barbara van Ommen, T. Verleyen, E. 2012 http://hdl.handle.net/10278/42761 https://doi.org/10.1016/j.quascirev.2012.09.003 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000311186100006 volume:55 firstpage:75 lastpage:90 numberofpages:16 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10278/42761 doi:10.1016/j.quascirev.2012.09.003 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84867910480 info:eu-repo/semantics/closedAccess Last millennium Antarctica model-data comparison data assimilation reconstruction info:eu-repo/semantics/article 2012 ftuniveneziairis https://doi.org/10.1016/j.quascirev.2012.09.003 2024-03-21T18:03:28Z 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 1000e1850. 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 Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic Quaternary Science Reviews 55 75 90 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Last millennium Antarctica model-data comparison data assimilation reconstruction |
spellingShingle |
Last millennium Antarctica model-data comparison data assimilation reconstruction Goosse H. Braida M. Crosta X. Mairesse A. Masson Delmotte V. Mathiot P. Neukom R. Oerter H. Philippon G. Renssen H. van Ommen T. Verleyen E. STENNI, Barbara Antarctic temperature changes during the last millennium: evaluation of simulations and reconstructions |
topic_facet |
Last millennium Antarctica model-data comparison data assimilation reconstruction |
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 1000e1850. 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 |
Goosse, H. Braida, M. Crosta, X. Mairesse, A. Masson Delmotte, V. Mathiot, P. Neukom, R. Oerter, H. Philippon, G. Renssen, H. Stenni, Barbara van Ommen, T. Verleyen, E. |
format |
Article in Journal/Newspaper |
author |
Goosse H. Braida M. Crosta X. Mairesse A. Masson Delmotte V. Mathiot P. Neukom R. Oerter H. Philippon G. Renssen H. van Ommen T. Verleyen E. STENNI, Barbara |
author_facet |
Goosse H. Braida M. Crosta X. Mairesse A. Masson Delmotte V. Mathiot P. Neukom R. Oerter H. Philippon G. Renssen H. van Ommen T. Verleyen E. STENNI, Barbara |
author_sort |
Goosse H. |
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 |
publishDate |
2012 |
url |
http://hdl.handle.net/10278/42761 https://doi.org/10.1016/j.quascirev.2012.09.003 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000311186100006 volume:55 firstpage:75 lastpage:90 numberofpages:16 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10278/42761 doi:10.1016/j.quascirev.2012.09.003 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84867910480 |
op_rights |
info:eu-repo/semantics/closedAccess |
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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1796301011530285056 |