气候变化领域集成服务门户(CCPortal): A Long-Lived Sharp Disruption on the Lower Clouds of Venus

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DOI	10.1029/2020GL087221
	A Long-Lived Sharp Disruption on the Lower Clouds of Venus
	Peralta J.; Navarro T.; Vun C.W.; Sánchez-Lavega A.; McGouldrick K.; Horinouchi T.; Imamura T.; Hueso R.; Boyd J.P.; Schubert G.; Kouyama T.; Satoh T.; Iwagami N.; Young E.F.; Bullock M.A.; Machado P.; Lee Y.J.; Limaye S.S.; Nakamura M.; Tellmann S.; Wesley A.; Miles P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	Planetary-scale waves are thought to play a role in powering the yet unexplained atmospheric superrotation of Venus. Puzzlingly, while Kelvin, Rossby, and stationary waves manifest at the upper clouds (65–70 km), no planetary-scale waves or stationary patterns have been reported in the intervening level of the lower clouds (48–55 km), although the latter are probably Lee waves. Using observations by the Akatsuki orbiter and ground-based telescopes, we show that the lower clouds follow a regular cycle punctuated between 30°N and 40°S by a sharp discontinuity or disruption with potential implications to Venus's general circulation and thermal structure. This disruption exhibits a westward rotation period of ∼4.9 days faster than winds at this level (∼6-day period), alters clouds' properties and aerosols, and remains coherent during weeks. Past observations reveal its recurrent nature since at least 1983, and numerical simulations show that a nonlinear Kelvin wave reproduces many of its properties. ©2020. The Authors.
英文关键词	Earth sciences; Geophysics; General circulation; Ground-based telescopes; Kelvin waves; Planetary scale; Rotation period; Stationary patterns; Stationary waves; Thermal structure; Orbits; cloud; Kelvin wave; lee wave; planetary wave; Rossby wave; Venus
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/170306
作者单位	Institute of Space and Astronautical Science, JAXA, Sagamihara, Japan; Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, Los Angeles, CA, United States; McGill Space Institute, McGill University, Montréal, QC, Canada; Department of Earth and Planetary Sciences, McGill University, Montréal, QC, Canada; (5) Escuela de Ingeniería de Bilbao, UPV/EHU, Bilbao, Spain; Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Faculty of Environmental Earth Science, Hokkaido University, Hokkaido, Japan; Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan; CLaSP Department, University of Michigan College of Engineering, Ann Arbor, MI, United States; Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology, Tokyo, Japan; Tokyo, Japan; Southwest Research Institute, Boulder, CO, United States; Institute of Astrophysics and Space Sciences, Lisbon, Portugal; Ab...
推荐引用方式 GB/T 7714	Peralta J.,Navarro T.,Vun C.W.,et al. A Long-Lived Sharp Disruption on the Lower Clouds of Venus[J],2020,47(11).
APA	Peralta J..,Navarro T..,Vun C.W..,Sánchez-Lavega A..,McGouldrick K..,...&Miles P..(2020).A Long-Lived Sharp Disruption on the Lower Clouds of Venus.Geophysical Research Letters,47(11).
MLA	Peralta J.,et al."A Long-Lived Sharp Disruption on the Lower Clouds of Venus".Geophysical Research Letters 47.11(2020).