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DOI | 10.1126/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 |
ISSN | 0036-8075 |
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 |
推荐引用方式 GB/T 7714 | 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). |
条目包含的文件 | 条目无相关文件。 |
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