The Orographic Drag in the Lower Unstable Boundary Layer
低层不稳定大气边界层中的地形阻力

In the present paper an analytical solution of mountain wave and surface wave drag has been obtained which induced by a three-dimensional isolated mountain in a two-layer model with a lower unstable boundary layer and an upper stable layer. The effects of the parameters of the atmosphere and mountain on the mountain wave and surface wave drag have been discussed. The studies show that mountain waves still play significant roles in the momentum budget in the atmosphere even though the lower layer in the atmosphere is unstable.