气象与环境学报Issue(2)：9-14,6.DOI:10.3969/j.issn.1673-503X.2015.02.002
南京一次暴雪过程大气污染特征分析
Characteristics of air pollution during a snowstorm process in Nanjing
摘要
Abstract
A short but intensive snowfall occurred in Nanjing on February 19,2013.Based on meteorological and environmental monitoring data,the impact of this process on various pollution sources and concentrations of pollu-tants was analyzed.Correlations between different pollutants and meteorological factors were discussed by a Pear-son correlation analysis method.The results indicate that this snowstorm has significant impact on area pollution sources in Nanjing.In particular,fugitive dust emissions are almost not found.Mobile sources are mainly influ-enced by the number of vehicle during morning and evening rush hour peaks.Very little impact is found for indus-trial point sources.After this process,the ambient air quality reaches the excellence grade.AQI on February 19 de-creases by 35% compared with that on February 18 or 20,2013.SO2 diurnal variation on February 19 remains to be a single peak,while PM and NO2 diurnal variation in this day is not bimodal pattern as usual.PM2.5 concentra-tion has a significant positive correlation with concentrations of PM10 ,SO2 ,NO2 and CO,and corresponding corre-lation coefficients are 0.979,0.663,0.837,and 0.875 respectively,which means the similar sources of those pol-lutants emissions.Concentrations of pollutants are significant negative correlations with wind speed and relative hu-midity and positive correlations with air temperature and pressure.关键词
暴雪/污染源/污染物/气象要素Key words
Snowstorm/Pollution source/Pollutant/Meteorological element分类
资源环境引用本文复制引用
谢放尖,李文青,卢宁川,喻义勇,于忠华..南京一次暴雪过程大气污染特征分析[J].气象与环境学报,2015,(2):9-14,6.基金项目
国家科技支撑计划项目“青奥会空气质量保障技术集成与应用”（2011BAK21B03）资助。 （）
