气候变化领域集成服务门户(CCPortal): Great Plains storm intensity since the last glacial controlled by spring surface warming

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DOI	10.1038/s41561-021-00860-8
	Great Plains storm intensity since the last glacial controlled by spring surface warming
	Sun C.; Shanahan T.M.; DiNezio P.N.; McKay N.P.; Roy P.D.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:12
英文摘要	Mesoscale convective systems (MCSs) supply a substantial portion of warm-season rainfall to the Great Plains of North America, and they are responsible for severe weather and flooding across the central United States. However, little is known about past behaviour and long-term drivers of these systems, limiting our ability to predict future extreme weather patterns in this region. Here, we generate a 20,000-year-long multiproxy record of storm intensity and hydroclimate variability from central Texas in the southern Great Plains and use transient climate model simulations to diagnose the dynamics of reconstructed changes in the climate of this region. We find that southern Great Plains storm intensity responded dynamically to external forcings associated with glacial boundary conditions and orbital forcing via changes in seasonal land surface warming. Springtime land surface warming steepens the zonal pressure gradient, producing an intensified southerly Great Plains low-level jet, enhancing southerly moisture transport and increasing springtime MCS intensity. Climate models predict a strengthening of the low-level jet in response to future warming, which our study suggests will lead to enhanced MCS activity and an increase in extreme weather across the Great Plains. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	boundary condition; climate change; climate modeling; flooding; global warming; land surface; orbital forcing; rainfall; severe weather; storm; Great Plains; Texas; United States
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250826
作者单位	Department of Geological Sciences, The University of Texas at Austin, Austin, TX, United States; Institute for Geophysics, The University of Texas at Austin, Austin, TX, United States; Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ, United States; Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, Mexico
推荐引用方式 GB/T 7714	Sun C.,Shanahan T.M.,DiNezio P.N.,et al. Great Plains storm intensity since the last glacial controlled by spring surface warming[J],2021,14(12).
APA	Sun C.,Shanahan T.M.,DiNezio P.N.,McKay N.P.,&Roy P.D..(2021).Great Plains storm intensity since the last glacial controlled by spring surface warming.Nature Geoscience,14(12).
MLA	Sun C.,et al."Great Plains storm intensity since the last glacial controlled by spring surface warming".Nature Geoscience 14.12(2021).