气候变化领域集成服务门户(CCPortal): Temperature Control on Silicate Weathering Intensity and Evolution of the Neogene East Asian Summer Monsoon

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DOI	10.1029/2020GL088808
	Temperature Control on Silicate Weathering Intensity and Evolution of the Neogene East Asian Summer Monsoon
	Ren X.; Nie J.; Saylor J.E.; Wang X.; Liu F.; Horton B.K.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Accurately reconstructing the evolution of the Asian monsoon is predicated on understanding the impact of temperature, precipitation, and tectonic paleogeography on silicate weathering proxies over million year timescales. We find that decreasing trends in chemical weathering proxies in both the northern and southern Tibetan Plateau match those from benthic oxygen isotope and sea surface temperature stacks since the late Miocene. In contrast, a synthesis of magnetic parameter-based records and marine clastic flux records reveals stronger monsoon precipitation during both the warm middle Miocene and cool late Miocene, supporting model simulations showing that both paleogeography and atmospheric CO2 content are important in controlling the summer monsoon. This trend of increasing monsoon precipitation contrasts with the record of decreasing chemical weathering, suggesting that chemical weathering proxies are mainly regulated by temperature at million year timescales, rather than precipitation. These findings clarify reconstructions of the Cenozoic evolution of the East Asian summer monsoon. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric thermodynamics; Erosion; Geochemistry; Oceanography; Silicates; Surface waters; Benthic oxygen isotope; Chemical weathering; East Asian summer monsoon; Impact of temperatures; Magnetic parameters; Monsoon precipitation; Sea surface temperature (SST); Silicate weathering; Weathering; chemical weathering; evolution; model validation; monsoon; Neogene; paleogeography; sea surface temperature; silicate; summer; temperature effect; China; Qinghai-Xizang Plateau
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170008
作者单位	MOE Key Laboratory of Western China's Environmental Systems, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences (CAS), Beijing, China; Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada; Department of Geological Sciences and Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States
推荐引用方式 GB/T 7714	Ren X.,Nie J.,Saylor J.E.,et al. Temperature Control on Silicate Weathering Intensity and Evolution of the Neogene East Asian Summer Monsoon[J],2020,47(15).
APA	Ren X.,Nie J.,Saylor J.E.,Wang X.,Liu F.,&Horton B.K..(2020).Temperature Control on Silicate Weathering Intensity and Evolution of the Neogene East Asian Summer Monsoon.Geophysical Research Letters,47(15).
MLA	Ren X.,et al."Temperature Control on Silicate Weathering Intensity and Evolution of the Neogene East Asian Summer Monsoon".Geophysical Research Letters 47.15(2020).