大气混合层高度的确定与计算方法研究

Study on the determination and calculating method of atmospheric mixing layer height

利用多个飞机场的气象资料对河北省及京、津地区的大气混合层高度进行研究，采用３种方法对大气混合层高度进行确定，把不同方法所得结果与实测值比较、分析后发现，干绝热法和经局地气象条件修正后的罗氏法是确定大区域大气混合层的最佳方法。利用离散点最小二乘曲线拟合原理得出精确度较高、计算简单的混合层高度计算公式。

n this paper,atmospheric mixed layer heights in Hebei provine including Beijing、Tianjing areas are studied by using meteorological data from many airfields.atmospheric mixed layer heights are determined by three methods.After the results determined are compared with actual sounding values and the erroes are analyaed,it is concluded that dry adiabatic method and Nlzaki method revised with respect to local meteorological conditions are the better methods for determing atmospheric mixed layer heights in the large areas.By using the principle of the curve analogy of the least square method,more precise and simple formulae of calculating the mixed layer heights have been obtained.