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DOI10.1126/science.aaz4439
How waves and turbulence maintain the super-rotation of Venus’ atmosphere
Horinouchi T.; Hayashi Y.-Y.; Watanabe S.; Yamada M.; Yamazaki A.; Kouyama T.; Taguchi M.; Fukuhara T.; Takagi M.; Ogohara K.; Murakami S.; Peralta J.; Limaye S.S.; Imamura T.; Nakamura M.; Sato T.M.; Satoh T.
发表日期2020
ISSN0036-8075
起始页码405
结束页码409
卷号368期号:6489
英文摘要Venus has a thick atmosphere that rotates 60 times as fast as the surface, a phenomenon known as super-rotation. We use data obtained from the orbiting Akatsuki spacecraft to investigate how the super-rotation is maintained in the cloud layer, where the rotation speed is highest. A thermally induced latitudinal-vertical circulation acts to homogenize the distribution of the angular momentum around the rotational axis. Maintaining the super-rotation requires this to be counteracted by atmospheric waves and turbulence. Among those effects, thermal tides transport the angular momentum, which maintains the rotation peak, near the cloud top at low latitudes. Other planetary-scale waves and large-scale turbulence act in the opposite direction. We suggest that hydrodynamic instabilities adjust the angular-momentum distribution at mid-latitudes. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词angular momentumeasterly wavehydrodynamicsspacecraftturbulencearticleatmospherehydrodynamicslatituderotationspace flight
语种英语
来源机构Science
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/133546
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Horinouchi T.,Hayashi Y.-Y.,Watanabe S.,等. How waves and turbulence maintain the super-rotation of Venus’ atmosphere[J]. Science,2020,368(6489).
APA Horinouchi T..,Hayashi Y.-Y..,Watanabe S..,Yamada M..,Yamazaki A..,...&Satoh T..(2020).How waves and turbulence maintain the super-rotation of Venus’ atmosphere.,368(6489).
MLA Horinouchi T.,et al."How waves and turbulence maintain the super-rotation of Venus’ atmosphere".368.6489(2020).
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