Study on the Venus atmospheric superrotation with a focus on the thermal tide and mean meridional circulation mechanisms
| Project/Area Number |
25400470
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Meteorology/Physical oceanography/Hydrology
|
|---|
| Research Institution | Kyoto Sangyo University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2013-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
|---|
| Keywords | 金星大気スーパーローテーション / 熱潮汐波 / 子午面循環 / 惑星大気 / 金星探査機あかつき / スーパーローテーション / 極渦 / 大気大循環 / 大気スーパーローテーション / ギーラッシュメカニズム |
|---|
| Outline of Final Research Achievements |
We conducted a study on the Venus atmospheric superrotation with a focus on the thermal tide and mean meridional circulation (Gierasch) mechanisms. The results show that both these two mechanisms are essential to the atmospheric superrotation at the cloud levels. We have also succeeded in reproducing the realistic atmospheric structures in the Venus upper atmosphere. It has been found that (1) the active baroclinic instability waves are excited at the lower cloud levels with lower static stability, and the so-called Rossby waves are explained by the baroclinic instability waves; (2) the cold collar, which is a cold latitudinal band surrounding the warm polar vortex at the cloud top levels, are successfully reproduced in the GCM results, and the mean meridional circulation induced by the thermal tide is quite important for the generation of the cold collar.
|
Report
(5 results)
Research Products
(22 results)
-
-
-
-
-
-
-
-
-
-
-
[Presentation] 金星上層大気中の波2015
Author(s)
杉本憲彦・高木征弘・松田佳久
Organizer
日本気象学会2015年度秋季大会
Place of Presentation
京都テルサ（京都府京都市）
Year and Date
2015-10-29
Related Report
-
[Presentation] Simulation of Venusian atmosphere by AFES2015
Author(s)
N. Sugimoto, H. Kashimura, M. Takagi, Y. Matsuda, H. Ando, T. Imamura, W. Ohfuchi, T. Enomoto, Y.O. Takahashi, and Y.Y. Hayashi
Organizer
EPSC 2015
Place of Presentation
Nantes, France
Year and Date
2015-09-27
Related Report
Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
