温度廓线对气溶胶垂直分布的影响分析

Research of the Influence of the Temperature Profile on the Vertical Distribution of Aerosol

文章根据2012—2014年6架次的机载气溶胶探测资料,结合温度廓线资料,对有明显逆温条件下的气溶胶粒子垂直分布做了分析,并在逆温影响的高度层对负指数分布规律进行了订正。结果表明,强的逆温层的存在会严重阻碍气溶胶粒子的扩散;在逆温影响下,6次探测都有高度层出现拟合值持续小于实测值的现象;对逆温影响的高度层进行温度订正后得到的结果与实测值更加接近;温度订正因子与逆温层温差密切相关,两者的线性回归关系模型为Y=-0.1499X+0.7548。

Based on the aerosol data obtained from six sorties during 2012 to 2014, combining with the temperature profile data, The article analyzed vertical distribution of aerosol particle with the influence of inversion, and corrected the aerosol particle number concentration negative exponential distribution with height. The results show that the existence of the strong inversion layer can severely hinder the diffusion of aerosol particles; all six times detection had levels that the fitting values for less than the measured values with the influence of inversion; corrected the level that affected by inversion, it showed that fitting value after correction was close to the measured values, and the temperature correction factor is closely related to the temperate difference of inversion layer; and the linear regression model between the temperature correction factor and the inversion layer is Y = 0.1499 ＋ 0.7548 X.