大气科学学报2011，Vol.34Issue(6)：697-707,11.
一次秋季冷锋降水过程气溶胶与云粒子分布的飞机观测
Aircraft observation of aerosol and cloud droplet during an autumn cold front precipitation process
摘要
Abstract
Based on the airborne Particle Measuring Systems （PMS）,the aerosol and cloud particle observation data over Shijiazhuang during a cold-front precipitation cloud system on 4—5 October 2008 are analyzed.Results show that the aerosol distribution is obviously different before and after precipitation.Before precipitation,the average number concentration of aerosol is about 103 cm-3 with mean diameter of 0.95 μm.The aerosol particles are mainly concentrated on the low troposphere below 3 000 m and the aerosol concentration obviously decreases in cloud.After precipitation,the average number concentration of aerosol is about 102 cm-3 with mean diameter of 1.28 μm,and the number concentration is about one order of magnitude smaller than that before precipitation.The aerosol particles are mainly concentrated near the surface layer below 1 200 m,and the number concentration decrease with height.Horizontal fluctuation of the aerosol number concentration is smaller （larger） in lower level cloud area （in no cloud area or near the surface layer below cloud area）.The mean number concentration of cloud particle is one or two orders of magnitude smaller than that of aerosol.The average aerosol spectrum is bimodal and the average cloud particle spectrum is unimodal.关键词
秋季冷锋/气溶胶/云粒子/飞机观测/石家庄地区Key words
autumn cold front/aerosol/cloud droplet/aircraft observation/Shijiazhuang area分类
天文与地球科学引用本文复制引用
居丽玲,牛生杰,段英..一次秋季冷锋降水过程气溶胶与云粒子分布的飞机观测[J].大气科学学报,2011,34(6):697-707,11.基金项目
国家科技支撑计划项目 （）
江苏省青蓝工程“云雾降水与气溶胶研究”创新团队项目 （）
