The origin of Asian monsoons: a modelling perspective

Tardif, Delphine; Fluteau, Frédéric; Donnadieu, Yannick; Le Hir, Guillaume; Ladant, Jean-Baptiste; Sepulchre, Pierre; Licht, Alexis; Poblete, Fernando; Dupont-Nivet, Guillaume

doi:https://doi.org/10.5194/cp-16-847-2020

Articles | Volume 16, issue 3

https://doi.org/10.5194/cp-16-847-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-16-847-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 3

Research article

|

08 May 2020

Research article |

| 08 May 2020

The origin of Asian monsoons: a modelling perspective

Delphine Tardif, Frédéric Fluteau, Yannick Donnadieu, Guillaume Le Hir, Jean-Baptiste Ladant, Pierre Sepulchre, Alexis Licht, Fernando Poblete, and Guillaume Dupont-Nivet

Supplement

https://doi.org/10.5194/cp-16-847-2020-supplement

Model code and software

IPSL-CM5A-VLR branche IPSLCM5A2.1_11192019 IPSL Climate Modelling Centre http://forge.ipsl.jussieu.fr/igcmg/svn/modipsl/branches/publications/IPSLCM5A2.1_11192019

IPSL climate models documentation IPSL Climate Modelling Centre http://forge.ipsl.jussieu.fr/igcmg_doc/wiki/Doc/Config/IPSLCM5A2

Short summary

The Asian monsoons onset has been suggested to be as early as 40 Ma, in a palaeogeographic and climatic context very different from modern conditions. We test the likeliness of an early monsoon onset through climatic modelling. Our results reveal a very arid central Asia and several regions in India, Myanmar and eastern China experiencing highly seasonal precipitations. This suggests that monsoon circulation is not paramount in triggering the highly seasonal patterns recorded in the fossils.