DOI: 10.1002/2014GL062280
论文题名: Venus's major cloud feature as an equatorially trapped wave distorted by the wind
作者: Peralta J. ; Sánchez-Lavega A. ; Lõpez-Valverde M.A. ; Luz D. ; MacHado P.
刊名: Geophysical Research Letters
ISSN: 0094-8987
EISSN: 1944-8718
出版年: 2015
卷: 42, 期: 3 起始页码: 705
结束页码: 711
语种: 英语
英文关键词: clouds
; Venus
; waves
Scopus关键词: Clouds
; Earth sciences
; Geophysics
; Waves
; Atmospheric dynamics
; Cloud structure
; Planetary scale
; Rotating bodies
; Standing problems
; Temporal evolution
; UV absorbing aerosol
; Venus
; Morphology
; aerosol composition
; cyclogenesis
; Kelvin wave
; planetary atmosphere
; ultraviolet radiation
; Venus
; wind field
; zonal wind
英文摘要: The superrotation of the atmospheres of slowly rotating bodies is a long-standing problem yet unsolved in atmospheric dynamics. On Venus, the most extreme case known of superrotation, this is accompanied and influenced by a recurrent planetary-scale cloud structure, known as the Y feature. So far, no model has simultaneously reproduced its shape, temporal evolution, related wind field, nor the relation between its dynamics and the unknown UV-absorbing aerosol that produces its dark morphology. In this paper we present an analytical model for a Kelvin-like wave that offers an explanation of these peculiarities. Under Venus cyclostrophic conditions, this wave is equatorially and vertically trapped where zonal winds peak and extends 7 km in altitude, and its vertical wind perturbations are shown to produce upwelling of the UV absorber. The Y-feature morphology and its 30 day evolution are reproduced as distortions of the wave structure by the Venus winds. © 2015 The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924961788&doi=10.1002%2f2014GL062280&partnerID=40&md5=4b702f13bcb5319085939f56c5f88125
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8603
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada, Spain
Recommended Citation:
Peralta J.,Sánchez-Lavega A.,Lõpez-Valverde M.A.,et al. Venus's major cloud feature as an equatorially trapped wave distorted by the wind[J]. Geophysical Research Letters,2015-01-01,42(3).