主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2022, Vol. 38 ›› Issue (1): 33-39.doi: 10.3969/j.issn.1673-503X.2022.01.005

• 论文 • 上一篇    下一篇

银川市主要污染物变化特征及其关系研究

高睿娜1,2(),孙银川1,2,*(),左河疆1,2,高娜1,2,王岱1,2   

  1. 1. 宁夏气象防灾减灾重点实验室, 宁夏 银川 750002
    2. 宁夏回族自治区气候中心, 宁夏 银川 750002
  • 收稿日期:2021-09-21 出版日期:2022-02-28 发布日期:2022-03-02
  • 通讯作者: 孙银川 E-mail:916476868@qq.com;sunyc@126.com
  • 作者简介:高睿娜, 女, 1988年生, 工程师, 主要从事空气质量变化特征分析及气候应用方面研究, E-mall: 916476868@qq.com
  • 基金资助:
    宁夏回族自治区重点研发计划项目(2019BFG02025);宁夏回族自治区重点研发计划项目(2018BEG03066);宁夏自然科学基金项目(2019AAC03252)

Variation and relationship of criteria air pollutants in Yinchuan

Rui-na GAO1,2(),Yin-chuan SUN1,2,*(),He-jiang ZUO1,2,Na GAO1,2,Dai WANG1,2   

  1. 1. Ningxia Key Laboratory of Meteorological Disaster Preventing and Reducing, Yinchuan 750002, China
    2. Climatic Center in Ningxia Hui Autonomous Region, Yinchuan 750002, China
  • Received:2021-09-21 Online:2022-02-28 Published:2022-03-02
  • Contact: Yin-chuan SUN E-mail:916476868@qq.com;sunyc@126.com

摘要:

利用2013-2019年银川市主要污染物浓度数据,分析了近年来银川市主要污染物浓度变化特征,并运用主成分分析法对主要污染物之间的关系进行研究。结果表明:近年来银川市主要污染物浓度除O3逐年呈上升趋势外,其他均呈下降趋势;市区站O3浓度较郊区背景站低,其他污染物市区较郊区背景站高;市区站PM10和PM2.5浓度超国家二级标准;除O3浓度夏季高,冬季低外,其他污染物冬季高,夏季低;CO、NO2、PM10、PM2.5浓度呈"双峰型"日变化特征,O3和SO2呈"单峰型"日变化特征。银川市主要污染物NO2浓度与CO和O3相关性显著,PM10和PM2.5之间相关性显著;污染物第一主成分是NO2、CO和O3,方差贡献率达到50%以上,加之银川市O3浓度逐年呈升高趋势,表明近年来银川市大气光化学污染增加。

关键词: 银川市, 大气污染物, 年变化, 日变化

Abstract:

Based on the monitoring data of concentrations of criteria air pollutants in Yinchuan from 2013 to 2019, we analyzed the variation of concentrations of criteria air pollutants in recent years and investigated the relationship among these air pollutants using the method of principal component analysis.The results showed that concentrations of all criteria air pollutants in Yinchuan decrease except for O3 that exhibit an increasing trend.The O3 concentrations observed at urban sites are lower than those observed at suburban background sites, whereas concentrations of other pollutants are relatively higher at urban sites.Both PM10 and PM2.5 concentrations at urban sites exceed the national secondary standard for air quality.Concentrations of all criteria air pollutants are highest in winter and lowest in summer, which is opposite to the seasonal variation of O3 concentration.The diurnal variation of CO, NO2, PM10, and PM2.5 shows a bimodal pattern, while the diurnal variation of O3 and SO2 exhibits a single peak.NO2 concentration has a significant correlation with CO and O3, and the PM10 concentration has a significant correlation with PM2.5 in Yinchuan.The first principal components of air pollutants include NO2, CO, and O3, with the variance contribution rate exceeding 50%.Moreover, the annual mean O3 concentration gradually increases, which indicates that atmospheric photochemical pollution is worsening in recent years.

Key words: Yinchuan, Air pollutant, Annual variation, Diurnal variation

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