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 ›› 2021, Vol. 37 ›› Issue (3): 40-46.doi: 10.3969/j.issn.1673-503X.2021.03.006

• 论文 • 上一篇    下一篇

2017—2019年太原南部城区夏季O3特征及其影响因子

卢盛栋1(),李军霞1,李芬1,赵俊杰1,靳泽辉2,李莹3,刘潇1   

  1. 1. 山西省气象灾害防御技术中心, 山西 太原 030012
    2. 五台山气象站, 山西 五台山 035515
    3. 山西省气象科学研究所, 山西 太原 030002
  • 收稿日期:2020-07-28 出版日期:2021-06-30 发布日期:1900-01-01
  • 作者简介:卢盛栋, 男, 1983年生, 工程师, 主要从事环境气象和灾害防御研究, E-mail: 869616667@qq.com
  • 基金资助:
    山西省气象局科学技术面上项目(SXKMSFW20205222)

Analysis of the characteristics of O3 concentration and its influencing factors in summer from 2017 to 2019 in the southern urban area of Taiyuan

Sheng-dong LU1(),Jun-xia LI1,Fen LI1,Jun-jie ZHAO1,Ze-hui JIN2,Ying LI3,Xiao LIU1   

  1. 1. Shanxi Meteorological Disaster Prevention Technology Center, Taiyuan 030012, China
    2. Wutai Mountain Meteorological station, Shanxi 035515, China
    3. Shanxi Meteorological Science Research Institute, Taiyuan 030002, China
  • Received:2020-07-28 Online:2021-06-30 Published:1900-01-01

摘要:

利用2017—2019年夏季(6—8月)太原市污染物浓度和气象逐小时数据,分析了太原南部城区O3浓度及其影响因子的变化特征,通过神经网络构建了O3与其影响因子的关系模型,并进行了检验。结果表明:2017—2019年夏季太原南部城区O3浓度超标天数分别为55 d、39 d、59 d,超标主要集中在6月和7月;O3浓度日变化特征呈单峰型,每日06时前后达到最低,15时前后达到峰值。高温、强辐射、低湿、低压、西南风容易引起太原南部城区O3浓度升高,西北风有利于O3扩散;NO2、CO与O3浓度表现为负相关关系,但NO2对其影响更加显著。利用神经网络构建O3浓度与影响因子的关系模型,相关系数达0.96,均方根误差、平均绝对误差分别为8 μg·m-3、6%,TS评分为0.95,神经网络模型具有较高预报能力,可为太原地区O3预报提供参考价值。

关键词: O3浓度, 气象因子, 神经网络

Abstract:

Based on the hourly data of pollutant concentration and relative meteorological factors during summer (June to August) from 2017-2019, the distribution characteristics of O3 concentration and its influencing factors in Taiyuan were analyzed using the neural network method.The results show that, during the summer from 2017-2019, the numbers of days in which the O3 concentration exceeds the limit in Taiyuan are 55 d, 39 d, 59 d, respectively.The cases that the O3 concentration exceeds the limit mostly occur in June and July.The diurnal variation of O3 concentration is unimodal, with the lowest around 06:00, and the peak around 15:00.The conditions such as high temperature, strong radiation, low humidity, low pressure, and southwest wind can easily lead to an increase of O3 concentration in Taiyuan urban areas.The NW wind is beneficial to the diffusion of O3 concentration.The relationships of NO2 and CO with O3 concentration are negative, and the influence of NO2 is more significant.The selected cases show that the O3 concentration fluctuates with the influencing factors.The relationship between O3 concentration and the influencing factors is constructed using the neural network method, with the correlation coefficient of 0.96, the mean square root and average absolute error of 8 μg·m-3 and 6%, respectively, and TS score of 0.95.The neural network model is valuable for the O3 concentration prediction and ozone pollution control in the Taiyuan area.

Key words: O3 concentration, Meteorological factors, Neural network

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