Aerosoloptical properties observation in Qingdao offshore area with shipborne lidar

Abstract

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

References

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