廊坊市大气污染变化的特征分析  

Analysis of the Characteristics of Air Pollution Changes in Langfang City

作　　者：纪诗璇 高清泉 吕宜谦 JI Shixuan;GAO Qingquan;LYU Yiqian(Langfang Meteorological Service,Langfang 065000,China)

机构地区：[1]廊坊市气象局,河北廊坊065000

出　　处：《中国资源综合利用》2023年第11期124-126,共3页China Resources Comprehensive Utilization

基　　金：廊坊市科学技术局“关于廊坊地区大气污染变化的特征分析”。

摘　　要：本文利用廊坊市大气污染物质量浓度的时间序列数据,研究其在时间序列上的周期特性。结果表明,2015—2018年廊坊市空气中主要污染物含量逐渐降低,空气质量指数逐步上升,重污染天数逐渐减少。与2017年相比,2018年可吸入颗粒物(PM_(10))、细颗粒物(PM_(2.5))、SO_(2)浓度分别下降4.90%、13.33%、21.43%。PM_(10)日均质量浓度以短期震荡为主,季节性变化显著。夏季浓度最低,冬季是一年中污染最严重的季节,存在显著峰值。This paper uses time series data of air pollutant mass concentration in Langfang City to study its periodic characteristics in time series.The results indicate that from 2015 to 2018,the content of major pollutants in the air of Langfang City gradually decreased,the air quality index gradually increased,and the number of days with heavy pollution gradually decreased.Compared with 2017,the concentrations of inhalable particulate matter(PM10),fine particulate matter(PM2.5),and SO2 decreased by 4.90%,13.33%,and 21.43%in 2018,respectively.The daily average mass concentration of PM10 is mainly characterized by short-term fluctuations,with significant seasonal changes.Summer has the lowest concentration,while winter is the most polluted season of the year,with significant peaks.

关 键 词：大气污染 变化特征 空气质量 周期性 小波分析 廊坊市 

分 类 号：X513[环境科学与工程—环境工程]