Effects of uniform flow on a two-dimensional mesoscale horizontal convection were investigated by using the vorticity and thermodynamic equations.
For this purpose, We simulated properties of a thermal convection in a stably stratified Boussinesq fluid caused by partial heating at the center of a lower boundary. If we don`t consider effects of the uniform flow, the convection takes the form of axisymmetric with respect to the z-axis. But when uniform flow is strong, velocity field and temperature field consist of a single cell structure which spreads upstream side of the partial heating area. The flow pattern for strong uniform flows takes the form of positive temperature near the ground and negative temperature perturbation aloft over the partial heating area, and downward motion directly over the upwind portion of the partial heating area and upward motion on the downstream side. The downstream edge of the upstream cell is shifted in the downstream direction with the increase of uniform flow almost linearly.

• 정우식(부산대학교 대기과학과) | Woo-Sik Jung (Dept, of Atmospheric sciences, Pusan National University)
• 김유근(부산대학교 대기과학과) | Yoo-Keun Kim (Dept, of Atmospheric sciences, Pusan National University)
• 이화운(부산대학교 대기과학과) | Hwa-Woon Lee (Dept, of Atmospheric sciences, Pusan National University)