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.

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Cited articles

Abels, H. A., Dupont-Nivet, G., Xiao, G., Bosboom, R., and Krijgsman, W.: Step-wise change of Asian interior climate preceding the Eocene–Oligocene Transition (EOT), Palaeogeogr. Palaeocl., 299, 399–412, https://doi.org/10.1016/j.palaeo.2010.11.028, 2011. 
Akhmetiev, M. A. and Zaporozhets, N. I.: Paleogene events in Central Eurasia: their role in the flora and vegetation cover evolution, migration of phytochore boundaries, and climate changes, Stratigr. Geol. Correl., 22, 312–335, https://doi.org/10.1134/S0869593814030022, 2014. 
Akhmets'ev, M. A. and Beniamovski, V. N.: The Paleocene and Eocene in the Russian part of West Eurasia, Stratigr. Geol. Correl., 14, 49–72, https://doi.org/10.1134/S0869593806010047, 2006. 
Anagnostou, E., John, E. H., Edgar, K. M., Foster, G. L., Ridgwell, A., Inglis, G. N., Pancost, R. D., Lunt, D. J., and Pearson, P. N.: Changing atmospheric CO2 concentration was the primary driver of early Cenozoic climate, Nature, 533, 380–384, https://doi.org/10.1038/nature17423, 2016. 
Baatsen, M., van Hinsbergen, D. J. J., von der Heydt, A. S., Dijkstra, H. A., Sluijs, A., Abels, H. A., and Bijl, P. K.: Reconstructing geographical boundary conditions for palaeoclimate modelling during the Cenozoic, Clim. Past, 12, 1635–1644, https://doi.org/10.5194/cp-12-1635-2016, 2016. 
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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.