摘要
基于CALIPSO卫星激光雷达数据,以卫星过境路线上33.5°N^34.5°N之间的区域为研究对象,对在清洁天气、霾、沙尘和烟花爆竹燃放污染天气下的气溶胶垂直分布特征进行了对比分析。研究结果表明:清洁天气时高空以大陆清洁型气溶胶为主;霾天时以大陆污染型气溶胶为主,其消光与后向散射能力强,粒子球形度较高且粒径较小;沙尘时气溶胶垂直分布广,近地面到高空范围内沙尘型气溶胶占主导,非球形度高且粒径较大;烟花爆竹燃放时主要产生集中在中低空的细粒子污染,以大陆污染型和污染沙尘型气溶胶为主。不同污染类型下气溶胶垂直分布特征各不相同,将CALIPSO卫星激光雷达数据与气象要素、Hysplit模型结合可用于对污染类型进行判别。
Aiming at the region of 33.5° N-34. 5°N on the satellite transit route, we compare the aerosol vertical distribution characteristics during clean period, haze, dust, and pollution caused by fireworks based on CALIPSO satellite laser radar data. The results show that, in the sunny day, most of aerosols are clean continental aerosols at high altitude; in haze, most of aerosols are polluted continental aerosols whose backscatter and extinction are strong, and most of aerosol particles are spherical particles with small diameters; in dust, aerosols have a wide vertical distribution from the ground to the high altitude, and most of aerosol particles are non-spherical particles with big sizes; in pollution caused by fireworks, aerosol particles are the small size particles at low altitude, whose types are the polluted continental aerosol and the polluted dust aerosol. It is concluded that the vertical distributions of aerosol under different population types are different. We can use CALIPSO satellite laser radar data, together with meteorological element and HYSPLIT model to characterize the category of the atmospheric aerosol.
作者
陈晓磊
金莲姬
Chen Xiaolei;Jin Lianji(Key Laboratory of Meteorological Disaster, Minstry of Education, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, CMA Key Laboratory for Aerosol-Cloud-Precipitation, Nanjing University of Information Science ＆ Technology, Nanjing, Jiangsu 210044, China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第2期95-101,共7页
Laser & Optoelectronics Progress
基金
国家重点研发计划课题(2016YFA0602003)
