Diurnal Boundary-Layer Development over Sloping Terrain
Diurnal Boundary-Layer Development over Sloping Terrain
复制标题
倾斜地形上的昼夜边界层发展
DOI：
--
复制
发表时间：
1981
期刊：
影响因子：
--
通讯作者：
R. Pielke
中科院分区：
文献类型：
--
作者：
R. McNider;R. Pielke
本文描述了一个与地面能量收支耦合的一维大气边界层预报模式，它利用了白天对流边界层交换系数的廓线公式（非局部）和基于局部Richardson数的稳定夜间边界层交换系数方案。结合本地和非本地模式被用来模拟的边界层行为的第33-34天的Wangara实验的完整的日周期。模拟结果表明，这些简化的交换系数格式模拟边界层的平均特征，以及更复杂和计算昂贵的高阶封闭模式。这个昼夜边界层制剂被纳入一个二维中尺度模式采用地形以下的坐标系，以检查边界层的行为在倾斜的地形类似的美国大平原。特别强调的是，在…
Abstract A one-dimensional prognostic model of the atmospheric boundary layer coupled to a surface energy budget is described which utilizes a profile formulation (non-local) for exchange coefficients in the daytime convective boundary layer and an exchange coefficient scheme based on local Richardson number for the stable nocturnal boundary layer. This combined local and non-local model is used to simulate the full diurnal cycle of the boundary-layer behavior of days 33–34 of the Wangara experiment. Results of the simulation indicate that these simplified exchange coefficient schemes simulate the mean features of the boundary layer as well as the more complex and computationally expensive higher order closure models. This diurnal boundary-layer formulation is incorporated into a two-dimensional mesoscale model employing a terrain-following coordinate system to examine boundary-layer behavior over sloping terrain similar to that of the Great Plains of the United States. Particular emphasis is placed on th...