Articles | Volume 16, issue 3
Clim. Past, 16, 847–865, 2020
https://doi.org/10.5194/cp-16-847-2020
Clim. Past, 16, 847–865, 2020
https://doi.org/10.5194/cp-16-847-2020

Research article 08 May 2020

Research article | 08 May 2020

The origin of Asian monsoons: a modelling perspective

Delphine Tardif et al.

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

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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.