摘要
本文建立了一个非静力的三维细网格边界层模式，对青岛地区复杂下垫面条件下的边界层结构和湍流特征作了数值模拟，模式采用能量闭合方案，舍弃了静力近似，以提高空间分辨率和模式精度。模拟以实测资料为初始输入，对该地区风场和湍流场作了较细致的模拟分析，与观测资料相比，结果合理地一致。结果表明了陡峭地形和不规则海岸线对局地风场和湍流场影响很大。
In this paper, a 3-dimensional fine-mesh non-hydrostatic PBL model has been developed and used for numerical simulation on the PBL structure and turbulence characteristics in Qingdao regions.In order to improve the resolving power and accuracy of the model,tht energy closure scheme(E-ε) was used without the hydrostatic restriction. The initial fields used in this model were from observed data. Wind. temperature and turbulence fields were analyzed in details. The results obtained from this model agree with observations.The results indicate that abruptness terrain and irregular coasts greatly affect the local wind fields and turbulence fields.
出处
《大气科学》
CSCD
北大核心
1996年第2期229-234,共6页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金
关键词
青岛地区
边界层结构
数值模拟
D nonhydrostatic PBL numerical model energy closure complex terrain
