气候变化领域集成服务门户(CCPortal): Revealing the Intensity of Turbulent Energy Transfer in Planetary Atmospheres

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DOI	10.1029/2020GL088685
	Revealing the Intensity of Turbulent Energy Transfer in Planetary Atmospheres
	Cabanes S.; Espa S.; Galperin B.; Young R.M.B.; Read P.L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Images of the giant planets Jupiter and Saturn show highly turbulent storms and swirling clouds that reflect the intensity of turbulence in their atmospheres. Quantifying planetary turbulence is inaccessible to conventional tools, however, since they require large quantities of spatially and temporally resolved data. Here we show, using experiments, observations, and simulations, that potential vorticity (PV) is a straightforward and universal diagnostic that can be used to estimate turbulent energy transfer in a stably stratified atmosphere. We use the conservation of PV to define a length scale, LM, representing a typical distance over which PV is mixed by planetary turbulence. LM increases as the turbulent intensity increases and can be estimated from any latitudinal PV profile. Using this principle, we estimate LM within Jupiter's and Saturn's tropospheres, showing for the first time that turbulent energy transfer in Saturn's atmosphere is four times less intense than Jupiter's. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Energy transfer; Interplanetary flight; Planets; Intensity of turbulences; Planetary atmosphere; Potential vorticity; Saturn's atmosphere; Stratified atmosphere; Temporally resolved; Turbulent energy transfer; Turbulent intensities; Atmospheric turbulence; Jupiter; planetary atmosphere; potential vorticity; Saturn; turbulence; vorticity
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/169322
作者单位	DICEA, Sapienza Universitá di Roma, Rome, Italy; College of Marine Science, University of South Florida, St. Petersburg, FL, United States; Department of Physics and National Space Science and Technology Center, UAE University, Al Ain, United Arab Emirates; Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, United Kingdom
推荐引用方式 GB/T 7714	Cabanes S.,Espa S.,Galperin B.,et al. Revealing the Intensity of Turbulent Energy Transfer in Planetary Atmospheres[J],2020,47(23).
APA	Cabanes S.,Espa S.,Galperin B.,Young R.M.B.,&Read P.L..(2020).Revealing the Intensity of Turbulent Energy Transfer in Planetary Atmospheres.Geophysical Research Letters,47(23).
MLA	Cabanes S.,et al."Revealing the Intensity of Turbulent Energy Transfer in Planetary Atmospheres".Geophysical Research Letters 47.23(2020).