论文信息 - The Horizontal Movement Speed of Cumulus Clouds in a Shear Flow : A Two-Dimensional Numerical Experiment

The Horizontal Movement Speed of Cumulus Clouds in a Shear Flow : A Two-Dimensional Numerical Experiment

Cumulus clouds in a shear flow are simulated by a two-dimensional slabsymmetric model with two different finite-difference schemes. It is known that the horizontal speed of the top of simulated clouds is less than the ambient wind speed at that height. This is explained in the developing stage by the transformation of the circulation pattern arising from vertical wind shear and in the dissipating stage by the asymmetrical distribution of liquid water content arising from the transformation of circulation.

H. Kon

[1] H. Kon. A Determination of Entrainment Rate and Drag Coefficient of Cumulus Clouds , 1981 .

[2] William R. Cotton,et al. Cumulus Convection in Shear Flow—Three-Dimensional Numerical Experiments , 1978 .

[3] C. Aspliden,et al. Three‐dimensional wind structure around convective elements over a tropical island , 1978 .

[4] Y. Sasaki,et al. Interactions Between a Discrete Convective Element and a Shearing Environment: A Numerical Simulation , 1977 .

[5] Tetsuya Theodore. Fujita,et al. Satellite-tracked cumulus velocities , 1975 .

[6] R. S. Pastushkov. The effects of vertical wind shear on the evolution of convective clouds , 1975 .

[7] Yoshimitsu Ogura,et al. A Comparison Between Axisymmetric and Slab-Symmetric Cumulus Cloud Models , 1973 .

[8] T. Takeda,et al. Numerical Simulation of a Precipitating Convective Cloud: The Formation of a “Long-Lasting” Cloud , 1971 .

[9] C. Molenkamp,et al. Accuracy of Finite-Difference Methods Applied to the Advection Equation , 1968 .

[10] Yoshmitsu Ogura,et al. The Evolution of a Moist Convective Element in a Shallow, Conditionally Unstable Atmosphere: A Numerical Calculation , 1963 .

[11] R. Kimura. Dynamics of Steady Convections Over Heat and Cool Islands , 1975 .

[12] C. Magono,et al. The Moving Velocity of Cumulus Humilis Clouds , 1973 .

[13] Frank B. Lipps. Two-Dimensional Numerical Experiments in Thermal Convection with Vertical Shear , 1971 .