摘要
运用一种新型边界层气溶胶监测激光雷达,在北京丰台区进行了外场实验,探讨了大气边界层(PBL)内气溶胶消光系数与湿度、风速等气象条件的关系,并给出了消光系数的时空分布。实验结果表明,水平大气气溶胶消光系数与黑碳质量浓度、地面风速等近地气象因子均有较好的相关性;边界层气象因子直接影响气溶胶的时空扩散和分布;在近地面风速较小等条件下,北京城区气溶胶污染在凌晨和上午较下午和前半夜严重。
Beijing outfield experiments have been conducted with a new planetary boundary layer (PBL) aerosol monitoring lidar in the summer. The relations of black carbon mass concentration and near ground wind speed to aerosol extinction coefficient are analyzed, and the space-time distributions of aerosol extinction coefficient are also presented in this paper. The results indicate that: the correlations of black carbon mass concentration and near ground wind speed to aerosol extinction coefficient are good; the near ground weather conditions can affect the space-time diffusion and distribution of aerosol; the aerosol pollution during wee hours and morning is serious than in the afternoon and late at night. The results can be referenced for environment management.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2006年第9期1255-1259,共5页
Chinese Journal of Lasers
基金
国家863计划(2005AA64100)资助项目
关键词
激光雷达
大气边界层
气溶胶
黑碳
相关
laser lidar
planetary boundary layer
aerosol
black carbon
correlation
作者简介
杨辉(1974-),男,四川德阳人,中国科学院安徽光学精密机械研究所环境光学与技术重点实验室博士研究生,主要从事激光雷达研制和大气环境监测、光电子技术等研究。E—mail:hyang@aiofm.ac.cn
刘文清(1954-),男,安徽蚌埠人,中国科学院安徽光学精密机械研究所所长,研究员,博士生导师,主要从事新型环境监测技术、痕量气体、水体、目标散射特性等的光学与光谱学监测方法、机动车尾气在线监测技术等研究和相应的监测仪器研发工作。E—mail:wqliu@aiofm.ac.cn