气象与环境学报2013，Vol.29Issue(3)：21-28,8.DOI:10.3969/j.issn.1673-503X.2013.03.004
2009年石家庄地区不同天气条件下大气气溶胶分布特征
Distribution characteristics of atmospheric aerosols in 2009 in Shijiazhuang area under different weather conditions
摘要
Abstract
Based on the aerosol data obtained using particle measuring system (PMS) from four flights in 2009 in Shijiazhuang area,the vertical distributions of number concentrations,mean diameter of atmospheric aerosol particle and its spectral distribution under different weather conditions,its horizontal distribution in a sunny day were analyzed.The results show that the maximum number concentration of aerosol particles with the diameter of 0.1-3.0 μm detected by PCASP probe changes from 102 cm-3 to 104 cm-3,and the average magnitude is from 102-103 cm-3.The maximum of the average diameter ranges from 0.225 μm to 0.717 μm and the average is between 0.148-0.167 μm.The number concentration of aerosol particles decreases with the increase of the height under the sunny weather condition,while the diameter changes seldom at the same condition.The aerosol accumulates distinctly on the bottom of inversion temperature layer,and its concentration in the atmospheric boundary layer is significantly higher than in the other levels.The aerosol number concentration of boundary layer is higher in cloudy and fog weather than in rain and sunny weather,and it is the lowest in rain weather.The horizontal distribution of aerosol number concentration is uneven in sunny weather.The aerosol number concentrations decrease significantly inside the cloud,while it is high outside the cloud.The size distributions of aerosol under different weather conditions and different heights of sunny day in Shijiazhuang are consistent and just have a single peak.The fine particles that the diameter is less than 0.3 μm are the main contributor to the number concentration of aerosol,and the spectral width is narrowed with the increase of the height.关键词
气溶胶/飞机探测/气溶胶数浓度Key words
Aerosols/ Airplane observation/ Aerosol number concentration分类
天文与地球科学引用本文复制引用
马梁臣,银燕..2009年石家庄地区不同天气条件下大气气溶胶分布特征[J].气象与环境学报,2013,29(3):21-28,8.基金项目
科技部公益性行业(气象)科研专项(GYHY(QX)2007-6-36)和江苏高校优势学科建设工程项目(PAPD)共同资助. （气象）
