南昌市污染物AQI指数特征分析

Characteristic Analysis of AQI Index in Nanchang

本文分析了南昌2013年至2014年的环境空气监测数据,结果显示:南昌空气质量良好;主要污染期集中在10月至2月;PM_(2.5)是南昌城区首要污染物;PM_(10)、PM_(2.5)、CO呈冬季>春季>秋季>夏季的季节特性;SO2、NO2呈冬季>秋季>春季>夏季的季节特性;8小时O3则呈现出春季>夏季>秋季>冬季的季节特性。在夏季,8小时O3成为南昌市最主要的污染物。通过具体分析发现,影响南昌AQI的主要天气条件有转折性过程天气、地面强冷空气过境、降水、连阴、连晴等因素。

This paper analyzed the monitoring data of ambient air in Nanchang from 2013 to 2014. The results showed that the air quality in Nanchang was good, and the main pollution period was from October to February. PM25 was the primary pollutant in Nanchang. PMI0, PM25, CO showed the seasonal characteristics of winter 〉 spring 〉 autumn 〉 summer; SO2, NO2 showed the seasonal characteristics of winter 〉 autumn 〉 spring 〉 summer; 8 hours of 03 showed the seasonal characteristics of spring 〉 summer 〉 autumn 〉 winter. In summer, 8 hours 03 became the most important pollutant in Nanchang. Through specific analysis, it was found that the main weather conditions affecting AQI in Nanchang were turning process weather, surface strong cold air transit, precipitation, continuous cloudy, even clear and other factors.