气候变化领域集成服务门户(CCPortal): Why Do the Maximum Intensities in Modeled Tropical Cyclones Vary Under the Same Environmental Conditions?

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DOI	10.1029/2019GL085980
	Why Do the Maximum Intensities in Modeled Tropical Cyclones Vary Under the Same Environmental Conditions?
	Tao D.; Bell M.; Rotunno R.; van Leeuwen P.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	In this study w e explored why the different initial tropical cyclone structures can result in different steady-state maximum intensities in model simulations with the same environmental conditions. We discovered a linear relationsh ip between the radius of maximum wind (rm) and the absolute angular momentum that passes through rm (Mm) in the model simulated steady-state tropical cyclones that rm = aMm+b. This nonnegligible intercept b is found to be the key to making a steady-state storm with a larger Mm more intense. The sensitivity experiments show that this nonzero b results mainly from horizontal turbulent mixing and decreases with decreased horizontal mixing. Using this linear relationship from the simulations, it is also found that the degree of supergradient wind is a function of Mm as well as the turbulent mixing length such that both a larger Mm and/or a reduced turbulent mixing length result in larger supergradient winds. © 2020. The Authors.
英文关键词	Angular momentum; Mixing; Shock tubes; Storms; Tropics; Turbulent flow; Environmental conditions; Linear relationships; Maximum intensities; maximum potential intensity; Model simulation; Steady state; Tropical cyclone; Turbulent mixing; Hurricanes; angular momentum; experimental study; steady-state equilibrium; tropical cyclone; turbulent mixing; wind velocity
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/170807
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Tao D.,Bell M.,Rotunno R.,et al. Why Do the Maximum Intensities in Modeled Tropical Cyclones Vary Under the Same Environmental Conditions?[J],2020,47(3).
APA	Tao D.,Bell M.,Rotunno R.,&van Leeuwen P.J..(2020).Why Do the Maximum Intensities in Modeled Tropical Cyclones Vary Under the Same Environmental Conditions?.Geophysical Research Letters,47(3).
MLA	Tao D.,et al."Why Do the Maximum Intensities in Modeled Tropical Cyclones Vary Under the Same Environmental Conditions?".Geophysical Research Letters 47.3(2020).