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 ›› 2016, Vol. 32 ›› Issue (2): 52-58.doi: 10.11927/j.issn.1673-503X.2016.02.007

• 论文 • 上一篇    下一篇

锦州市空气质量变化特征及其与气象条件关系

白雪1, 张翠艳1, 纪源2, 杨桂娟1, 张放1, 史虹婷1, 温舟1   

  1. 1. 锦州市气象局, 辽宁 锦州 121000;
    2. 黑山县气象局, 辽宁 黑山 121400
  • 收稿日期:2015-09-24 修回日期:2015-12-31 出版日期:2016-04-30 发布日期:2016-04-30
  • 通讯作者: 张翠艳,E-mail:zhangcuiyan2008@163.com。 E-mail:zhangcuiyan2008@163.com
  • 作者简介:白雪,女,1983年生,工程师,主要从事天气预报研究,E-mail:cold0102@163.com。
  • 基金资助:
    锦州市科学技术协会科研课题"锦州市空气质量变化特征及其与气象条件的关系"(20152212)资助。

Characteristics of air quality and its relationship with meteorological conditions in Jinzhou

BAI Xue1, ZHANG Cui-yan1, JI Yuan2, YANG Gui-juan1, ZHANG Fang1, SHI Hong-ting1, WEN Zhou1   

  1. 1. Jinzhou Meteorological Service, Jinzhou 121000, China;
    2. Heishan Meteorological Service, Heishan 121400, China
  • Received:2015-09-24 Revised:2015-12-31 Online:2016-04-30 Published:2016-04-30

摘要: 利用 2014年3月至2015年2月锦州市逐日AQI、日平均污染物浓度和同期气象要素观测资料,对锦州市空气质量时空分布特征及其与气象条件的关系进行了分析。结果表明:锦州市空气质量等级为良的频率为62%,轻度污染的频率为23%,优的频率仅为6%,主要污染物为PM2.5、PM10、SO2和O3。锦州市2月和10月空气质量最差,9月空气质量最好,空气质量达优和良等级的日数占9月总日数的97%;锦州市天安街道空气质量最差,其SO2浓度为百股街道的5倍。锦州市出现3级以上污染时的主要影响系统为地形槽、蒙古低压和弱气压场,降水对污染物具有清除作用,且对PM10的清除作用最明显;沙尘天气时空气污染明显加剧,逆温层抑制了污染物的扩散,逆温层底层高度越低,空气污染越严重。建立了AQI回归预报方程,拟合结果与实测值的变化基本一致,其中对春季AQI的拟合效果最好。

关键词: AQI, 空气污染, 气象要素, 相关分析, 逐步回归

Abstract: Using air quality index (AQI) and the daily mean concentration data of air pollutants in Jinzhou and corresponding meteorological data from March of 2014 to February of 2015, temporal and spatial characteristics of air quality and its relationship with meteorological conditions were analyzed.The results show that the frequency of the air quality with good grade is 62% in Jinzhou, while those with light pollution and excellent air quality grades are 23% and 6% respectively.The primary pollutants are PM2.5, PM10, SO2 and O3 in Jinzhou.Air quality is the worst in October and February, while it is the best in September when the number of days with excellent and great air quality grades reaches 97% in this month.Air quality is the worst at Tian'an Street, and its concentration of SO2 is 5 times higher than that at Baigu Street.The main influence systems are terrain trough pattern, Mongolia low circulation pattern and uniform pressure field when the air pollution grade is above slight contamination.Precipitation has good cleanup effect for pollutants, especially for PM10.Dust weather can cause serious air pollution.Presence of inversion temperature is not favorable to the diffusion of pollutants.The lower the bottom height of inversion layer is, the more serious air pollution is.A regression equation of AQI is established and the fitting results suggest that the estimated values are consistent with observed values, especially in spring.

Key words: Air Quality Index (AQI), Air pollution, Meteorological element, Correlation analysis, Stepwise regression

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