| ZUO ZHONGDAO. 1986. ON INTERACTION BETWEEN MERIDIONAL AND ZONAL DISTURBANCES IN TROPICAL EASTERLY. Acta Oceanologica Sinica, (2):195－202 |
| ON INTERACTION BETWEEN MERIDIONAL AND ZONAL DISTURBANCES IN TROPICAL EASTERLY |
| ON INTERACTION BETWEEN MERIDIONAL AND ZONAL DISTURBANCES IN TROPICAL EASTERLY |
| Received:February 04, 1985 Revised:August 02, 1985 |
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| Abstract: |
The distribution of wind speed in the easterly in the tropics is not uniform.In the part with large curvature,such as lines of trough and ridge,the wind speed is small,while in the part with small curvature,the wind speed is large.In this paper,these phenomena are expounded with gradient wind equation.
Considering the distribution of wind speed,we find the wave speed formula from linearized vorticity and divergence equation.The wave speed is equal to the sum of the Rossby wave speed and a harmonic function for x and t.Its period is about 3.5 days.And it is proved that the disturbance is barotropic instability.The results are caused by interaction between meriodional and zonal disturbances. |
| 中文摘要: |
The distribution of wind speed in the easterly in the tropics is not uniform.In the part with large curvature,such as lines of trough and ridge,the wind speed is small,while in the part with small curvature,the wind speed is large.In this paper,these phenomena are expounded with gradient wind equation.
Considering the distribution of wind speed,we find the wave speed formula from linearized vorticity and divergence equation.The wave speed is equal to the sum of the Rossby wave speed and a harmonic function for x and t.Its period is about 3.5 days.And it is proved that the disturbance is barotropic instability.The results are caused by interaction between meriodional and zonal disturbances. |
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