A 3-dimensional non-hydrostatic PBL model with a new non-local counter gradie nt closure (CG) is developed and used to simulate the boundary layer on complex terrain near Hangzhou gulf.

• 建立了一个3维非静力边界层模式，并采用一种新的非局地反梯度闭合方案在杭州湾附近复杂地形区进行了数值模拟。