How waves and turbulence maintain the super-rotation of Venus' atmosphere

Horinouchi, Takeshi; Hayashi, Yoshi-Yuki; Watanabe, Shigeto; Yamada, Manabu; Yamazaki, Atsushi; Kouyama, Toru; Taguchi, Makoto; Fukuhara, Tetsuya; Takagi, Masahiro; Ogohara, Kazunori; Murakami, Shin-ya; Peralta, Javier; Limaye, Sanjay S.; Imamura, Takeshi; Nakamura, Masato; Sato, Takao M.; Satoh, Takehiko

How waves and turbulence maintain the super-rotation of Venus' atmosphere

Horinouchi, Takeshi; Hayashi, Yoshi-Yuki; Watanabe, Shigeto et al.

Science, 2020, 368(6489), 405-409

Permalink : https://hdl.handle.net/2115/78661

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アクセス権	open access
URI	https://hdl.handle.net/2115/78661
タイトル	How waves and turbulence maintain the super-rotation of Venus' atmosphere
著者	Horinouchi, Takeshi ; Hayashi, Yoshi-Yuki ; Watanabe, Shigeto ; Yamada, Manabu ; Yamazaki, Atsushi ; Kouyama, Toru ; Taguchi, Makoto ; Fukuhara, Tetsuya ; Takagi, Masahiro ; Ogohara, Kazunori ; Murakami, Shin-ya ; Peralta, Javier ; Limaye, Sanjay S. ; Imamura, Takeshi ; Nakamura, Masato ; Sato, Takao M. ; Satoh, Takehiko
e-Rad_Researcher 50314266 著者名 Horinouchi, Takeshi
e-Rad_Researcher 20180979 著者名 Hayashi, Yoshi-Yuki
e-Rad_Researcher 90271577 著者名 Watanabe, Shigeto
e-Rad_Researcher 40451512 著者名 Yamada, Manabu
e-Rad_Researcher 00374893 著者名 Yamazaki, Atsushi
e-Rad_Researcher 40645876 著者名 Kouyama, Toru
e-Rad_Researcher 70236404 著者名 Taguchi, Makoto
e-Rad_Researcher 70435808 著者名 Fukuhara, Tetsuya
e-Rad_Researcher 00323494 著者名 Takagi, Masahiro
e-Rad_Researcher 50644853 著者名 Ogohara, Kazunori
著者名 Murakami, Shin-ya
著者名 Peralta, Javier
著者名 Limaye, Sanjay S.
e-Rad_Researcher 40311170 著者名 Imamura, Takeshi
e-Rad_Researcher 20227937 著者名 Nakamura, Masato
著者名 Sato, Takao M.
e-Rad_Researcher 10297632 著者名 Satoh, Takehiko
言語	英語
発行日	2020-04-24
出版者	The American Association for the Advancement of Science（AAAS）
収録物名	Science
巻(号)	368(6489)
ページ	405-409
抄録	Venus has a thick atmosphere that rotates 60 times as fast as the surface, a phenomenon known as superrotation. 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.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science, vol.368 on 24 Apr 2020, DOI: 10.1126/science.aaz4439
PISSN	0036-8075
NCID	AA00835277
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1126/science.aaz4439