摘要
本文运用一层、σ坐标下的中尺度模式,对地面风场进行了诊断模拟,模拟所需的初值较少,在一般的计算机上就能进行。给定天气背景的高度和温度场后,考虑地表摩擦、非绝热强迫及次网格扩散等过程,在温度场中对稳定状态下的水平动量和表面温度方程进行积分,即可诊断地面风场。文中给出了辽东半岛的例子。结果表明,该简单模式对复杂地形下的中尺度流场有一定的模拟能力,能模拟出地形和海陆差异导致的一些局地风场。
A middle scale model in certain level in sigma coordinates is used to diagnose and simulate surface winds over complex terain in LiaoNing province. Computer simulation is carried out to study the effects of complex terrain on surface winds.Under the consideration of surface friction, diabatic forced subgrid-scale mixing, the horizontal momentum equation and surface temperature equation are integrated in a temperature field at specified synoptic-scale height. The results indicate that this simple model can be used to diagnose many details of middle scale flow over complex terrain.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
1992年第1期8-14,共7页
Acta Energiae Solaris Sinica
