淮安市大气环境质量状况及其影响因素分析

The Condition of Atmospheric Environmental Quality in Huaian City and Its Interfering Factors

利用淮安市空气质量日报资料及大气污染逐时监测数据计算得到2014-2018年间淮安市API、AQI值,并分析淮安市大气污染特征及原因.研究结果表明:淮安市2014-2018年间,大气主要污染物为PM_(2.5),次要污染物为PM_(10)和O_(3);淮安市2014-2018年间API、AQI值年变化总体呈下降趋势;2018年API、AQI值月际变化与温度、气压、风速和相对湿度有关,平均风速与API、AQI值呈明显的负相关,相对湿度与API、AQI值之间的关系与季节有关,高温低压的气候条件有利于API、AQI值的减小.

The API and AQI values of Huaian during 2014 to 2018 were calculated based on daily air quality data and hourly air pollution monitoring data of Huaian city during 2014 to 2018,and the air pollution characteristics of Huaian city were analyzed.The results showed that from 2014 to 2018,the major pollutants was PM_(2.5),the secondary pollutants were PM_(10) and O_(3).The annual changes of API and AQI values in Huaian showed a downward trend.The inter-month changes of API and AQI in Huaian in 2018 was related to temperature,air pressure,wind speed and relative humidity.The average wind speed was significantly negatively correlated with API and AQI,and the relationship between relative humidity and API and AQI was related to seasons.The climatic conditions of high temperature and low pressure were conducive to the reduction of API and AQI values.