摘要
通过对北京市 1 998～ 2 0 0 1年气溶胶数浓度的测量 ,分析了气溶胶粒子谱分布和数浓度变化 ,揭示了北京市气溶胶数浓度特征及其变化规律 ,同时还分析了沙尘与北京市气溶胶数浓度的联系。研究表明 ,北京市气溶胶数浓度自 1 998年逐年减小 ,2 0 0 1年 6月开始有所增加 ,气溶胶数浓度日变化特征同 2 0世纪 80年代有较大差异 ,北京市气溶胶变化与沙尘天气密切相关。
Based on the analysis of aerosol concentration from 1998 to 2001, some of the aerosol variance characteristics and tendency of Beijing atmosphere were got, in addition, the influence on aerosol concentration from the dust weather was analyzed.The research results show that aerosol number concentration of Beijing decreased annually from 1998, but increased in June of 2001.The daily variance of aerosol number concentration is different from that in the 1980s.Aerosol number concentration has a close relationship with dust weather.
出处
《气候与环境研究》
CSCD
2003年第4期495-502,共8页
Climatic and Environmental Research
基金
中国科学院知识创新项目KZCX2 -3 0 5
中国科学院国际合作局中日ADEC项目
国家重点基础研究规划项目G2 0 0 0 0 4870 3资助
关键词
气溶胶
谱分布
数浓度
沙尘
atmospheric aerosol
size distribution
number concentration
dust
