船载激光雷达观测青岛海域气溶胶光学性质实验研究

研制了一套能连续探测海洋大气气溶胶光学性质垂直分布的船载小型米散射激光雷达系统,用该系统于2015年5月和9月在青岛海域开展了海洋大气气溶胶观测实验.以同船搭载的Microtops II型手持式太阳光度计同步测量得到的气溶胶光学厚度作对比数据,比较了两种仪器的气溶胶光学厚度测量结果,得到观测海域柱平均激光雷达比为32.4sr,标准偏差4.6sr.由Fernald方法得到了实验海域夏季15 km以下的气溶胶消光系数廓线.连续观测实验表明研制的船载米散射激光雷达结构紧凑,易于在船载平台操作,能对海洋大气气溶胶的光学特性进行连续有效的高时空分辨率廓线测量.

Aerosol optical properties observation in Qingdao offshore area with shipborne lidar

A compact ship-borne Mie scattering lidar system is developed which can continuously observe vertical distribution of marine atmospheric aerosol optical properties,and marine atmospheric aerosol observation experiments are carried out in the offshore area of Qingdao,China in May and September,2015,respectively.The aerosol optical depth (AOD) obtained synchronously from a handheld Microtops Ⅱ sun photometer on board is used as comparison data,and AOD measurement results of the two instruments are compared.The average laser radar ratio,standard deviation of the observed offshore area is 32.4 sr,4.6 sr,respectively.The aerosol extinction coefficient profiles below 15 km at the experiment area in summer are retrieved by Fernald method.The continuous observation experiments show that the developed ship-borne Mie scattering lidar has compact structure,and is easy to operate on a ship-borne platform.It can measure continuously and effectively the high spatial and temporal resolution profiles of optical properties of the offshore atmospheric aerosol.