| 南京一次暴雪过程大气污染特征分析 |
| |
| 引用本文： | 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,2015,31(2):9-14. |
| |
| 作者姓名： | 谢放尖 李文青 卢宁川 喻义勇 于忠华 |
| |
| 作者单位： | 1.南京市环境保护科学研究院，江苏 南京 210093, 2. 南京市监测中心站，江苏 南京 210093 |
| |
| 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。 |
| |
| 摘 要： | 利用气象和环境监测资料分析2013年2月19日南京一次短时强降雪过程对各类污染源及污染物浓度的影响，并利用Pearson相关分析法分析不同污染物之间及污染物与气象要素之间的相关关系。结果表明：此次南京暴雪对面源影响最大，扬尘排放量几乎为零，流动源主要受机动车早晚高峰变化影响，工业点源受影响不大。此次暴雪过程后，南京空气质量达到优级，2013年2月19日AQI指数比18日与20日均下降35%，SO2日变化仍呈单峰型，颗粒物及NO2日变化则未呈现早晚双峰变化。PM2.5与PM10、SO2、NO2、CO呈显著正相关，相关系数分别为0.979、0.663、0.837和0.875，说明污染物来源具有一定的同源性。污染物浓度与风速、相对湿度呈显著负相关，与温度、大气压强呈显著正相关。
|
| 关 键 词： | 暴雪 染物源 污染物 气象要素 |
Characteristics of air pollution during a snowstorm process in Nanjing |
| |
| XIE Fang-jian,LI Wen-qing,LU Ning-chuan,YU Yi-yong,YU Zhong-hua.Characteristics of air pollution during a snowstorm process in Nanjing[J].Journal of Meteorology and Environment,2015,31(2):9-14. |
| |
| Authors: | XIE Fang-jian LI Wen-qing LU Ning-chuan YU Yi-yong YU Zhong-hua |
| |
| Institution: | 1. Nanjing Academy of Environmental Science, Nanjing 210093, China; 2, Nanjing Environmental Monitoring Center, Nanjing 210093, China |
| |
| 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 pollutants was analyzed. Correlations between different pollutants and meteorological factors were discussed by a Pearson 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 influenced by the number of vehicle during morning and evening rush hour peaks. Very little impact is found for industrial point sources. After this process, the ambient air quality reaches the excellence grade. AQI on February 19 decreases 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 concentration has a significant positive correlation with concentrations of PM10, SO2, NO2 and CO, and corresponding correlation coefficients are 0.979, 0.663, 0.837, and 0.875 respectively, which means the similar sources of those pollutants emissions. Concentrations of pollutants are significant negative correlations with wind speed and relative humidity and positive correlations with air temperature and pressure. |
| |
| Keywords: | Snowstorm Pollution source Pollutant Meteorological element |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《气象与环境学报》浏览原始摘要信息 |
| 点击此处可从《气象与环境学报》下载免费的PDF全文 |
|
