Impact of mountains in Southern China on the Eocene climates of East Asia

Inconsistencies in the Eocene climates of East Asia have been revealed in both geological studies and simulations. Several earlier reconstructions showed an arid zonal band in mid-latitude China, but others showed a humid climate in the same region. Moreover, previous Eocene modeling studies have demonstrated that climate models can simulate both scenarios in China. Therefore, it is essential to investigate the cause of this model spread. We conducted a series of experiments using Norwegian Earth System Model 1-F and examined the impact of mountains in Southern China on the simulated Eocene climate. These mountains, including the Gangdese and Southeast Mountains, are located along the main path of water vapor transport to East Asia. Our results reveal that the Southeast Mountains play the dominant role in controlling the simulated precipitation in Eastern China during the Eocene. When the heights of the Southeast Mountains exceed similar to 2,000 m, an arid zonal band appears in mid-latitude China, whereas humid climates appear in Eastern China when the elevation of the Southeast Mountains is relatively low.

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Author Zhang, Z.
Zhang, Z.
He, Z.
Tan, N.
Guo, Z.
Zhu, Jiang
Steinig, S.
Donnadieu, Y.
Ladant, J.
Chan, W.
Abe-Ouchi, A.
Niezgodzki, I.
Knorr, G.
Hutchinson, D. K.
de Boer, A. M.
Publisher UCAR/NCAR - Library
Publication Date 2022-09-16T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2025-07-11T15:59:32.865915
Metadata Record Identifier edu.ucar.opensky::articles:25702
Metadata Language eng; USA
Suggested Citation Zhang, Z., Zhang, Z., He, Z., Tan, N., Guo, Z., Zhu, Jiang, Steinig, S., Donnadieu, Y., Ladant, J., Chan, W., Abe-Ouchi, A., Niezgodzki, I., Knorr, G., Hutchinson, D. K., de Boer, A. M.. (2022). Impact of mountains in Southern China on the Eocene climates of East Asia. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7bg2sr6. Accessed 27 October 2025.

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