船载激光雷达观测青岛海域气溶胶光学性质实验研究

J4 ›› 2017, Vol. 34 ›› Issue (4): 486-494.

船载激光雷达观测青岛海域气溶胶光学性质实验研究

李辉¹,孙加运²,陈震¹,马玲¹,李杰¹,刘智深¹

1中国海洋大学海洋遥感研究所，山东青岛 266003； 2 山东科技大学测绘科学与工程学院，山东青岛 266590

收稿日期:2016-05-06 修回日期:2016-07-09 出版日期:2017-07-28 发布日期:2017-08-29

Aerosoloptical properties observation in Qingdao offshore area with shipborne lidar

Received:2016-05-06 Revised:2016-07-09 Published:2017-07-28 Online:2017-08-29

摘要/Abstract

摘要： 介绍了一种自主研制能够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，使用该系统分别于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。使用同船搭载的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为对比数据,分析了两种仪器气溶胶光学厚度测量结果的关系，确定了观测海域实验期间柱平均激光雷达比为32sr，标准偏差4.6sr。通过Fernald方法得到了实验海域夏季15km以下气溶胶消光系数廓线信息。海洋连续观测实验结果表明，该型船载米散射激光雷达结构紧凑，易于在船载平台快速部署，能够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。

Abstract: A compact shipborne Mie scattering LiDAR was developed for observations of the spatial and temporal vertical distribution and optical properties of marine atmospheric aerosols. Experiments were conducted in the offshore area of Qingdao to measure the troposphere marine aerosols using this system in May and September 2015 respectively. The mean value and standard deviation of column-averaged LiDAR ratio in the experimental area and time is determined using aerosol optical depth（AOD）measurements form a handheld Microtops II Sun photometer as constrain, which is 32 sr and 4.6 sr respectively. The relation between the AODs measured with LiDAR and Sunphotometer are present. Then the LiDAR signal is processed by the Fernald method to calculate the aerosol extinction coefficient profile below 15km altitude above the sea surface. This marine experiment has proved that the system is portable and rugged enough to operate on a ship, and can measure the marine atmospheric aerosols and clouds effectively and continuously with high spatial and temporal resolution.

Key words: extinction coefficient

李辉孙加运陈震马玲李杰刘智深. 船载激光雷达观测青岛海域气溶胶光学性质实验研究[J]. J4, 2017, 34(4): 486-494.

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