一种改进的边界层参数化模式  

An improved boundary layer parameterization scheme.

作　　者：许丽人[1] 王体健[1] 李宗恺[1] 

机构地区：[1]南京大学大气科学系

出　　处：《中国环境科学》1998年第1期43-47,共5页China Environmental Science

基　　金：国家自然科学基金

摘　　要：在能量平衡方法的基础上提出一套利用常规气象资料求取边界层参数的改进方案。利用中国科学院大气物理研究所铁塔观测资料，与廓线法进行对比分析，表明这种方案具有输入要求少，输出信息量大，结果合理的优点。此外，对此方案中的４个可变参数作了敏感性试验，结果表明湿度变化参数α的敏感性较强，在使用时应当合理选择其数值。该方案可以满足新一代空气质量模式对边界层参数化的需求。同时，由于仅需常规气象资料就能求取所有的边界层参数，因此特别适合于空气质量模式的法规应用。On the basis of energy balance model, an improved scheme which is used to calculate boundary layer parameters is presented. Using observed data from Beijing 325m Meteorological Tower of Institute of Atmospheric Physical,Chinese Academy of Sciences and comparing with profile scheme, it shows that this scheme has many advantages, such as few required input parameters, much output information and reasonable results.In addition,with a sensitive test of four factors, the results show that the surface moisture availability factor α is more sensitive than the others;and its value should be selected reasonably . The scheme can satisfy new air quality model's need for boundary layer parameterization. At the same time, since it needs only routine meteorological data to work out all of the boundary layer parameters, it is specially fitted for the regulatory application of air quality model.

关 键 词：边界层参数 能量平衡方法 环境气象学 

分 类 号：X16[环境科学与工程—环境科学]