The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago
Deep-sea and ice-core records show that interglacial periods were overall less "warm" before about 420 000 years ago than after, with relatively higher ice volume and lower greenhouse gases concentration. This is particularly the case for the interglacial Marine Isotope Stage 13 which occu...
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Online Access: | http://hdl.handle.net/2078.1/36502 https://doi.org/10.5194/cp-4-79-2008 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:36502 2024-05-12T08:05:12+00:00 The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago Yin, Qiuzhen Berger, André Driesschaert, E. Goosse, Hugues Loutre, Marie-France Crucifix, Michel UCL - SC/PHYS - Département de physique UCL - SST/ELI/ELIC - Earth & Climate 2008 http://hdl.handle.net/2078.1/36502 https://doi.org/10.5194/cp-4-79-2008 eng eng Copernicus Publications boreal:36502 http://hdl.handle.net/2078.1/36502 doi:10.5194/cp-4-79-2008 urn:ISSN:1814-9324 urn:EISSN:1814-9332 info:eu-repo/semantics/openAccess Climate of the Past, Vol. 4, no. 2, p. 79-90 (2008) info:eu-repo/semantics/article 2008 ftunistlouisbrus https://doi.org/10.5194/cp-4-79-2008 2024-04-18T18:15:50Z Deep-sea and ice-core records show that interglacial periods were overall less "warm" before about 420 000 years ago than after, with relatively higher ice volume and lower greenhouse gases concentration. This is particularly the case for the interglacial Marine Isotope Stage 13 which occurred about 500 000 years ago. However, by contrast, the loess and other proxy records from China suggest an exceptionally active East Asian summer monsoon during this interglacial. A three-dimension Earth system Model of Intermediate complexity was used to understand this seeming paradox. The astronomical forcing and the remnant ice sheets present in Eurasia and North America were taken into account in a series of sensitivity experiments. Expectedly, the seasonal contrast is larger and the East Asian summer monsoon is reinforced compared to Pre-Industrial time when Northern Hemisphere summer is at perihelion. Surprisingly, the presence of the Eurasian ice sheet was found to reinforce monsoon, too, through a south-eastwards perturbation planetary wave. The trajectory of this wave is influenced by the Tibetan plateau. Article in Journal/Newspaper ice core Ice Sheet DIAL@USL-B (Université Saint-Louis, Bruxelles) Climate of the Past 4 2 79 90 |
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Open Polar |
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DIAL@USL-B (Université Saint-Louis, Bruxelles) |
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ftunistlouisbrus |
language |
English |
description |
Deep-sea and ice-core records show that interglacial periods were overall less "warm" before about 420 000 years ago than after, with relatively higher ice volume and lower greenhouse gases concentration. This is particularly the case for the interglacial Marine Isotope Stage 13 which occurred about 500 000 years ago. However, by contrast, the loess and other proxy records from China suggest an exceptionally active East Asian summer monsoon during this interglacial. A three-dimension Earth system Model of Intermediate complexity was used to understand this seeming paradox. The astronomical forcing and the remnant ice sheets present in Eurasia and North America were taken into account in a series of sensitivity experiments. Expectedly, the seasonal contrast is larger and the East Asian summer monsoon is reinforced compared to Pre-Industrial time when Northern Hemisphere summer is at perihelion. Surprisingly, the presence of the Eurasian ice sheet was found to reinforce monsoon, too, through a south-eastwards perturbation planetary wave. The trajectory of this wave is influenced by the Tibetan plateau. |
author2 |
UCL - SC/PHYS - Département de physique UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Yin, Qiuzhen Berger, André Driesschaert, E. Goosse, Hugues Loutre, Marie-France Crucifix, Michel |
spellingShingle |
Yin, Qiuzhen Berger, André Driesschaert, E. Goosse, Hugues Loutre, Marie-France Crucifix, Michel The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago |
author_facet |
Yin, Qiuzhen Berger, André Driesschaert, E. Goosse, Hugues Loutre, Marie-France Crucifix, Michel |
author_sort |
Yin, Qiuzhen |
title |
The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago |
title_short |
The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago |
title_full |
The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago |
title_fullStr |
The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago |
title_full_unstemmed |
The Eurasian ice sheet reinforces the East Asian summer monsoon during the interglacial 500 000 years ago |
title_sort |
eurasian ice sheet reinforces the east asian summer monsoon during the interglacial 500 000 years ago |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
http://hdl.handle.net/2078.1/36502 https://doi.org/10.5194/cp-4-79-2008 |
genre |
ice core Ice Sheet |
genre_facet |
ice core Ice Sheet |
op_source |
Climate of the Past, Vol. 4, no. 2, p. 79-90 (2008) |
op_relation |
boreal:36502 http://hdl.handle.net/2078.1/36502 doi:10.5194/cp-4-79-2008 urn:ISSN:1814-9324 urn:EISSN:1814-9332 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-4-79-2008 |
container_title |
Climate of the Past |
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4 |
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2 |
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79 |
op_container_end_page |
90 |
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1798847474366939136 |