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DOI	10.1007/s00382-019-04976-x
	The impact of Coriolis approximations on the environmental sensitivity of idealized extratropical cyclones
	Tierney G.; Posselt D.J.; Booth J.F.
发表日期	2019
ISSN	0930-7575
起始页码	7065
结束页码	7080
卷号	53 期号:11
英文摘要	The precise influence of climate change on extratropical cyclone genesis and evolution is an important (but as yet unsolved) problem, given their physical and economic impact on a large portion of the planet’s population. However, extratropical cyclones are also affected by the competing influences of forcing mechanisms at a wide range of spatial scales, complicating the problem. While the advent of idealized numerical modeling has allowed great strides in addressing these complications and achieving some qualitative consensus in the literature, there is still some quantitative disagreement about response magnitude and where local maxima and minima in the response may be located. Thus, the advantages inherent in the variety of idealized numerical modeling methods used to address this problem are also a drawback, as it can be difficult to draw one-to-one comparisons across experiments. Although the effects of particular model architecture choices such as microphysical and cumulus schemes are well-documented, others are less understood. In this study, we examine the role of Coriolis approximations by comparing a new set of ETC sensitivity experiments using a linear β-plane approximation to an existing set of extratropical sensitivity experiments using a constant f-plane approximation. ETCs within the new β-plane experiment are found to generally decrease in strength with temperature, as measured by both minimum sea level pressure and maximum eddy kinetic energy (EKE). A small increase in EKE is observed at the warmest temperatures, likely due to diabatic influences disrupting flow within the warm conveyor belt. While seemingly contradictory to the previous f-plane results, the two experiments are instead found to be qualitatively similar upon further inspection, with an offset of approximately 8 K. This offset is primarily due to the Coriolis approximations, although the initial stability profile (affected by the Coriolis approximation) has a marginal influence. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Climate change; Dynamical meteorology; Extratropical cyclones; Idealized modeling; Latent heat release; Midlatitude meteorology
语种	英语
scopus关键词	climate change; cloud microphysics; Coriolis force; eddy; extratropical cyclone; kinetic energy; latent heat flux; midlatitude environment; numerical model; sea level pressure
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145793
作者单位	Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, 1136 Jordan Hall, Raleigh, NC 27695, United States; Jet Propulsion Laboratory, California Institute of Technology, M/S 233-304, 4800 Oak Grove Drive, Pasadena, CA 91109, United States; City College of New York, 160 Convent Ave, Marshak Building, Room 926, New York, NY 10031, United States
推荐引用方式 GB/T 7714	Tierney G.,Posselt D.J.,Booth J.F.. The impact of Coriolis approximations on the environmental sensitivity of idealized extratropical cyclones[J],2019,53(11).
APA	Tierney G.,Posselt D.J.,&Booth J.F..(2019).The impact of Coriolis approximations on the environmental sensitivity of idealized extratropical cyclones.Climate Dynamics,53(11).
MLA	Tierney G.,et al."The impact of Coriolis approximations on the environmental sensitivity of idealized extratropical cyclones".Climate Dynamics 53.11(2019).