globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD027646
Scopus记录号: 2-s2.0-85050474061
论文题名:
Investigating Sensitivity of East Asian Monsoon to Orbital Forcing During the Late Pliocene Warm Period
作者: Yan Q.; Zhang Z.; Zhang R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:14
起始页码: 7161
结束页码: 7178
语种: 英语
英文关键词: East Asian monsoon ; mid-Pliocene ; orbital forcing
英文摘要: The Late Pliocene climate (3.264–3.025 Ma) is thought to be relatively warm and stable compared with the Pleistocene, but with clear orbital-scale climate variability. Using the Community Earth System Model, we investigate the sensitivity of East Asian monsoon to realistic orbital forcing during the Late Pliocene. Initial evaluation shows that the Community Earth System Model broadly captures modern East Asian monsoon climatology and reproduces the reconstructed stronger (weaker) East Asian summer (winter) monsoon in the Late Pliocene under the PRISM3D (Pliocene Research, Interpretation and Synoptic Mapping) boundary conditions that use present-day orbital configurations. Sensitivity experiments indicate that summer and winter temperatures averaged over the East Asia continent remain higher for different orbital configurations in the Late Pliocene than the preindustrial, but with different warming magnitude. Variation of East Asian summer monsoon is significantly modulated by orbital forcing in the Late Pliocene. Under several extreme orbital configurations, the summer monsoon becomes weaker relative to the preindustrial. This is attributed to the fact that the orbitally induced decrease in land-sea thermal contrast exceeds the increase arising from the PRISM3D boundary conditions. East Asian winter monsoon exhibits a relatively stable feature and remains weaker in the Late Pliocene even with extreme orbital forcing, as the effect of PRISM3D boundary conditions that lead to reduced land-sea thermal contrast overwhelms the influence of orbital forcing. Given limitations of snapshot time slab simulation and different model sensitivity, the orbital-scale variability of East Asian monsoon in the Late Pliocene should be further explored using transient simulation and with other coupled models. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113491
Appears in Collections:气候减缓与适应

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作者单位: Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Meteorological Disaster/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China; Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan, China; Uni Research Climate, Bjerknes Center for Climate Research, Bergen, Norway; Climate Change Research Center, Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Yan Q.,Zhang Z.,Zhang R.. Investigating Sensitivity of East Asian Monsoon to Orbital Forcing During the Late Pliocene Warm Period[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(14)
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