中文摘要：

在 532 nm 操作的一套微脉搏激光雷达(MPL ) 系统在 2011 在上海被用于喷雾器的基于地面的观察。三个典型微粒污染事件(例如，薄雾) 被检验决定喷雾器的进化垂直分发和行星的边界层(PBL ) 在这些污染事件期间。喷雾器在任何给定的测量高度的垂直扑灭系数(VEC ) 在联系事件前后比那在薄雾时期期间是显著地更大的。喷雾器从施加的各种各样的来源区域发源在喷雾器装载和垂直 layering 上强迫到某程度，导致垂直分发组织的不同喷雾器。喷雾器 VEC 总是由于本地污染物质排出物的潜在的影响在表面附近被最大化。在喷雾器 VEC 的几座山峰在影响灰尘、影响 bioburning 的薄雾事件期间在 1 km 上面在高度被发现。喷雾器 VEC 与在弄脏本地人的薄雾事件期间增加高度减少了，与在表面空气的单个最大值。当 PBL 和可见性在薄雾事件的早阶段逐渐地减少了时，下午 _2.5 慢慢地增加了；随后，下午 _2.5 积累了并且被加重直到严肃的污染爆炸发生在中间、以后的阶段。结果表明从不同来源的喷雾器影响喷雾器在空气的垂直分布并且在 PBL 和污染物质装载之间的关系可以在污染的形成起一个重要作用。

英文摘要：

A set of micro pulse lidar （MPL） systems operating at 532 nm was used for ground-based observation of aerosols in Shanghai in 2011. Three typical particulate pollution events （e.g., haze） were examined to determine the evolution of aerosol vertical distribution and the planetary boundary layer （PBL） during these pollution episodes. The aerosol vertical extinction coefficient （VEC） at any given measured altitude was prominently larger during haze periods than that before or after the associated event. Aerosols originating from various source regions exerted forcing to some extent on aerosol loading and vertical layering, leading to different aerosol vertical distribution structures. Aerosol VECs were always maximized near the surface owing to the potential influence of local pollutant emissions. Several peaks in aerosol VECs were found at altitudes above 1 km during the dust- and bioburningoinfluenced haze events. Aerosol VECs decreased with increasing altitude during the local-polluted haze event, with a single maximum in the surface atmosphere. PM2.5 increased slowly while PBL and visibility decreased gradually in the early stages of haze events; subsequently, PM2.5 accumulated and was exacerbated until serious pollution bursts occurred in the middle and later stages. The results reveal that aerosols from different sources impact aerosol vertical distributions in the atmosphere and that the relationship between PBL and pollutant loadings may play an important role in the formation of pollution.