气候变化领域集成服务门户(CCPortal): Sensitivity of Water Balance in the Qaidam Basin to the Mid-Pliocene Climate

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DOI	10.1029/2020JD033965
	Sensitivity of Water Balance in the Qaidam Basin to the Mid-Pliocene Climate
	Wang X.; Schmidt B.; Otto M.; Ehlers T.A.; Mutz S.G.; Botsyun S.; Scherer D.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:16
英文摘要	The Qaidam Basin (QB) in the northeastern Tibetan Plateau held a megalake system during the Pliocene. Today, the lower elevations in the basin are hyperarid. To understand to what extent the climate plays a role in the maintenance of the megalake system during the Pliocene, we applied the Weather Research and Forecasting model for dynamical downscaling of ECHAM5 global climate simulations for the present day and the mid-Pliocene. When imposing the mid-Pliocene climate on the QB with its modern land surface settings, the annual water balance ((Formula presented.)), that is, the change in terrestrial water storage within the QB, increases. This positive imbalance of (Formula presented.) induced solely by the changes in the large-scale climate state would lead to a readjustment of lake extent, until a new equilibrium state is reached, where loss due to evaporation over lake areas compensates for the input by runoff and precipitation. Atmospheric water transport (AWT) analysis at each border of the QB reveals that this imbalance of (Formula presented.) is caused by stronger moisture influx across the western border in winter, spring, and autumn and weaker moisture out-flux across the eastern border in summer. These changes in AWT are associated with the strengthening of the midlatitude westerlies in all seasons, except for summer, and the intensification of the East Asian Summer Monsoon. Given that the mid-Pliocene climate is an analog to the projected warm climate of the near future, our study contributes to a better understanding of climate change impacts in central Asia. © 2021. The Authors.
英文关键词	dynamical downscaling; Pliocene; Qaidam Basin; water balance
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237066
作者单位	Chair of Climatology, Technische Universität Berlin, Berlin, Germany; Department of Geosciences, University Tübingen, Tübingen, Germany
推荐引用方式 GB/T 7714	Wang X.,Schmidt B.,Otto M.,et al. Sensitivity of Water Balance in the Qaidam Basin to the Mid-Pliocene Climate[J],2021,126(16).
APA	Wang X..,Schmidt B..,Otto M..,Ehlers T.A..,Mutz S.G..,...&Scherer D..(2021).Sensitivity of Water Balance in the Qaidam Basin to the Mid-Pliocene Climate.Journal of Geophysical Research: Atmospheres,126(16).
MLA	Wang X.,et al."Sensitivity of Water Balance in the Qaidam Basin to the Mid-Pliocene Climate".Journal of Geophysical Research: Atmospheres 126.16(2021).