Morphology and Dynamics of Venus's Middle Clouds With Akatsuki/IR1
Morphology and Dynamics of Venus's Middle Clouds With Akatsuki/IR1
复制标题
Akatsuki/IR1 观测金星中部云层的形态和动力学
DOI：
10.1029/2018gl081670
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发表时间：
2019
影响因子：
5.2
通讯作者：
Takagi S.
中科院分区：
文献类型：
--
作者：
Peralta J.;Iwagami N.;Sanchez‐Lavega A.;Lee Y. J.;Hueso R.;Narita M.;Imamura T.;Miles P.;Wesley A.;Kardasis E.;Takagi S.
The Venusian atmosphere is covered by clouds with superrotating winds whose accelerating mechanism is still not well understood. The fastest winds, occurring at the cloud tops (∼70‐km height), have been studied for decades, thanks to their visual contrast in dayside ultraviolet images. The middle clouds (∼50–55 km) can be observed at near‐infrared wavelengths (800–950 nm), although with very low contrast. Here we present the first extensive analysis of their morphology and motions at lower latitudes along 2016 with 900‐nm images from the IR1 camera onboard Akatsuki. The middle clouds exhibit hemispherical asymmetries every 4–5 days, sharp discontinuities in elongated “hook‐like” stripes, and large contrasts (3–21%) probably associated with large changes in the optical thickness. Zonal winds obtained with IR1 images and with ground‐based observations reveal mean zonal winds peaking at the equator, while their combination with Venus Express unveils long‐term variations of 20 m/s along 10 years.
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影响因子：
4.8
作者：
Perez-Hoyos, S.;Sanchez-Lavega, A.;Sanz-Requena, J. F.
通讯作者：
Sanz-Requena, J. F.
影响因子：
2.4
作者：
Hueso, R.;Peralta, J.;Sanchez-Lavega, A.
通讯作者：
Sanchez-Lavega, A.
影响因子：
4.8
作者：
Ignatiev, N. I.;Titov, D. V.;Manoel, N.
通讯作者：
Manoel, N.
影响因子：
3.2
作者：
Hueso, R.;Peralta, J.;Sanchez-Lavega, A.
通讯作者：
Sanchez-Lavega, A.
行星天文学专业和业余合作的仪器方法
影响因子：
3
作者：
O. Mousis;R. Hueso;J. Beaulieu;S. Bouley;B. Carry;F. Colas;A. Klotz;C. Pellier;J. Petit;P. Rousselot;M. Ali;W. Beisker;M. Birlan;C. Buil;A. Delsanti;E. Frappa;H. Hammel;A. Levasseur;G. Orton;A. Sánchez‐Lavega;A. Santerne;P. Tanga;J. Vaubaillon;B. Zanda;D. Baratoux;T. Böhm;V. Boudon;A. Bouquet;L. Buzzi;J. Dauvergne;A. Decock;Marc Delcroix;P. Drossart;N. Esseiva;G. Fischer;L. Fletcher;S. Foglia;J. M. Gómez;J. Guarro;D. Herald;E. Jehin;F. Kugel;J. Lebreton;J. Lecacheux;A. Leroy;L. Maquet;G. Masi;A. Maury;F. Meyer;S. Pérez;A. Rajpurohit;C. Rinner;J. Rogers;F. Roques;R. Schmude;B. Sicardy;B. Trégon;M. Vanhuysse;A. Wesley;T. Widemann
通讯作者：
T. Widemann