The role of the westerlies and orography in Asian hydroclimate since the late Oligocene

Xin Wang; Barbara Carrapa; Yuchen Sun; David L. Dettman; James B. Chapman; Jeremy K. Caves Rugenstein; Mark T. Clementz; Peter G. DeCelles; Mi Wang; Jie Chen; Jay Quade; Fei Wang; Zaijun Li; Ilhomjon Oimuhammadzoda; Mustafo Gadoev; Gerrit Lohmann; Xu Zhang; Fahu Chen

doi:10.1130/G47400.1

The role of the westerlies and orography in Asian hydroclimate since the late Oligocene

Xin Wang, Barbara Carrapa, Yuchen Sun, David L. Dettman, James B. Chapman, Jeremy K. Caves Rugenstein, Mark T. Clementz, Peter G. DeCelles, Mi Wang, Jie Chen, Jay Quade, Fei Wang, Zaijun Li, Ilhomjon Oimuhammadzoda, Mustafo Gadoev, Gerrit Lohmann, Xu Zhang, Fahu Chen

Geosciences

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73 Scopus citations

Abstract

Interactions between midlatitude westerlies and the Pamir-Tian Shan mountains significantly impact hydroclimate patterns in Central Asia today, and they played an important role in driving Asian aridification during the Cenozoic. We show that distinct westeast hydroclimate differences were established over Central Asia during the late Oligocene (ca. 25 Ma), as recorded by stable oxygen isotopic values of soil carbonates. Our climate simulations show that these differences are present when relief of the Pamir-Tian Shan is higher than 75% of modern elevation (~3000 m). Integrated with geological evidence, we suggest that a significant portion of the Pamir-Tian Shan orogen had reached elevations of ~3 km and acted as a moisture barrier for the westerlies since ca. 25 Ma.

Original language	English (US)
Pages (from-to)	728-732
Number of pages	5
Journal	Geology
Volume	48
Issue number	7
DOIs	https://doi.org/10.1130/G47400.1
State	Published - 2020

ASJC Scopus subject areas

Geology

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Wang, X., Carrapa, B., Sun, Y., Dettman, D. L., Chapman, J. B., Caves Rugenstein, J. K., Clementz, M. T., DeCelles, P. G., Wang, M., Chen, J., Quade, J., Wang, F., Li, Z., Oimuhammadzoda, I., Gadoev, M., Lohmann, G., Zhang, X., & Chen, F. (2020). The role of the westerlies and orography in Asian hydroclimate since the late Oligocene. Geology, 48(7), 728-732. https://doi.org/10.1130/G47400.1

Wang, X, Carrapa, B, Sun, Y, Dettman, DL, Chapman, JB, Caves Rugenstein, JK, Clementz, MT, DeCelles, PG, Wang, M, Chen, J, Quade, J, Wang, F, Li, Z, Oimuhammadzoda, I, Gadoev, M, Lohmann, G, Zhang, X & Chen, F 2020, 'The role of the westerlies and orography in Asian hydroclimate since the late Oligocene', Geology, vol. 48, no. 7, pp. 728-732. https://doi.org/10.1130/G47400.1

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title = "The role of the westerlies and orography in Asian hydroclimate since the late Oligocene",

abstract = "Interactions between midlatitude westerlies and the Pamir-Tian Shan mountains significantly impact hydroclimate patterns in Central Asia today, and they played an important role in driving Asian aridification during the Cenozoic. We show that distinct westeast hydroclimate differences were established over Central Asia during the late Oligocene (ca. 25 Ma), as recorded by stable oxygen isotopic values of soil carbonates. Our climate simulations show that these differences are present when relief of the Pamir-Tian Shan is higher than 75% of modern elevation (~3000 m). Integrated with geological evidence, we suggest that a significant portion of the Pamir-Tian Shan orogen had reached elevations of ~3 km and acted as a moisture barrier for the westerlies since ca. 25 Ma.",

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AU - Wang, Xin

AU - Carrapa, Barbara

AU - Sun, Yuchen

AU - Dettman, David L.

AU - Chapman, James B.

AU - Caves Rugenstein, Jeremy K.

AU - Clementz, Mark T.

AU - DeCelles, Peter G.

AU - Wang, Mi

AU - Chen, Jie

AU - Quade, Jay

AU - Wang, Fei

AU - Li, Zaijun

AU - Oimuhammadzoda, Ilhomjon

AU - Gadoev, Mustafo

AU - Lohmann, Gerrit

AU - Zhang, Xu

AU - Chen, Fahu

PY - 2020

Y1 - 2020

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AB - Interactions between midlatitude westerlies and the Pamir-Tian Shan mountains significantly impact hydroclimate patterns in Central Asia today, and they played an important role in driving Asian aridification during the Cenozoic. We show that distinct westeast hydroclimate differences were established over Central Asia during the late Oligocene (ca. 25 Ma), as recorded by stable oxygen isotopic values of soil carbonates. Our climate simulations show that these differences are present when relief of the Pamir-Tian Shan is higher than 75% of modern elevation (~3000 m). Integrated with geological evidence, we suggest that a significant portion of the Pamir-Tian Shan orogen had reached elevations of ~3 km and acted as a moisture barrier for the westerlies since ca. 25 Ma.

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The role of the westerlies and orography in Asian hydroclimate since the late Oligocene

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