Lidar Monitoring of Atmospheric Atomic Mercury and Sulfur Dioxide in Guangzhou, China

被引：0
|
作者：
Zhao, Guangyu [1 ]
Wu, Xinxiang [1 ]
Lian, Ming [1 ]
Svanberg, Sune [1 ,2 ]
机构：
[1] South Normal China Univ City Campus, Ctr Opt & Electromagnet Res, Guangzhou 51006, Guangdong, Peoples R China
[2] Lund Univ, Dept Phys, SE-22100 Lund, Sweden
来源：
PIERS 2014 GUANGZHOU: PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM | 2014年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A Differential Absorption Lidar (DIAL) system based on a dye laser pumped by a 20 Hz Nd:YAG laser was constructed and used for range-resolved atomic mercury and sulfur dioxide monitoring. These gases are both severe pollutants in China, and there is a considerable interest to map such gases. Measurements were performed from a fixed laboratory, with the eye safe laser beam pointing upwards at a 15 degrees angle, to assess the vertical distribution of the gases. Long term quasi-continuous monitoring of background mercury and sulfur dioxide concentrations is presented. In particular, the influence of weather conditions was studied during prolonged measurement sequences. We have now studied prominent wash-out effects on mercury due to rainfall. For sulfur dioxide, a pollutant that causes acid rain quite high concentrations measured in Guangzhou were observed to fall drastically at rainfall due to wash-out.
引用
收藏
页码：2711 / 2714
页数：4
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