气象与环境学报Issue(3)：35-42,8.DOI:10.3969/j.issn.1673-503X.2015.03.006
京津冀地区一次严重霾天气过程及其影响因素分析
Analysis of a serious haze process and its impact factors in Jing-jin-ji region
摘要
Abstract
Using the atmospheric pollution monitoring data,the conventional meteorological observation data and the NCEP reanalysis data,a serious haze process on January 9-17,2013 and its relationship with meteorological conditions were analyzed.The results indicate that mean daily concentrations of PM10 ,SO2 and NO2 are higher in six cities (Beijing,Tianjin,Shijiazhuang,Baoding,Handan and Tangshan)during this process,and their variation trends are similar.The variation amplitude of mean daily PM10 concentration is the largest among three pollutants and peak value occurs on January 1 1 to 13.The most serious pollution occurs in Shijiazhuang,Baoding and Han-dan,and their mean daily PM10 concentrations are 0.94 mg·m-3 ,0.95 mg·m-3 and 0.82 mg·m-3 respectively. The variation ranges of daily concentrations of SO2 and NO2 are smaller,but their values are almost above 0.1 mg·m-3 .The main circulation influencing this process is the zonal circulation,and there is a strong inversion layer.Weak downward action makes atmosphere near the surface stable,which is not favorable to pollutant diffu-sion,while low wind speed near the surface and relative humidity less than 90%in low level are favorable to for-mation of haze.In addition,a back trajectory analysis suggests that air mass of this process comes from Xinjiang region.Airflow is mainly from northwest to southwest and transports wet air and pollutants to Jing-jin-ji region.关键词
霾/环流形势/逆温/相对湿度/垂直运动Key words
Haze/Circulation situation/Temperature inversion/Relative humidity/Vertical motion分类
天文与地球科学引用本文复制引用
刘丽伟,李文才,尚可政,王式功,褚金花,付洁..京津冀地区一次严重霾天气过程及其影响因素分析[J].气象与环境学报,2015,(3):35-42,8.基金项目
公益性行业（气象）科研专项（GYHY201106034）、国家自然科学基金青年基金（41105109）、兰州大学中央高校基本科研业务费专项（lzujbky-2013-m03）和中国科协IRDR CHINA灾害风险综合研究项目（IRDR2012-I01）共同资助。 （）
