边界层气溶胶垂直分布阶梯遥感

Step Remote Sensing for Vertical Structure of Particle Size Distribution of Atmospheric Aerosols

利用地面接收的太阳直射能量光谱可以提取整层大气气溶胶粒度谱分布信息。本文把这种思想予以延伸,在不同高度测量太阳直射光谱,则可以获得各高度层区间气溶胶粒度谱分布结构。文中以北京气象塔为试验场,利用地面实测资料,结合数值实验,指出了这种阶梯遥感方法在边界层气溶胶垂直廓线探测中的应用前景,并分析讨论了观测精度和垂直分辨率间的关系。

An idea that information of columnar aerosol size distribution can be abstracted from the direct solar radiation received on the ground surface has been expanded to that on various levels above the ground,which is called as the step remote sensing.Consequently,the vertical structure of aerosol size distribution can be found out.In the field of Beijing meteorological tower,the new scheme has been tested with some experiments and numerical method.It is shown that the scheme affords great promise of being used for detecting of the profile of atmospheric aerosol in the boundary layer.A discussion is also made for relation of the resolution of vertical direction with the observation precision.