GAO Kaixiang,LV Tingting,ZHANG Yang,et al.Analysis of Meteorological Conditions of Ozone Pollution in Shuangliu Area[J].Journal of Chengdu University of Information Technology,2024,39(03):353-360.[doi:10.16836/j.cnki.jcuit.2024.03.013]
双流臭氧污染的气象条件特征分析
- Title:
- Analysis of Meteorological Conditions of Ozone Pollution in Shuangliu Area
- 文章编号:
- 2096-1618(2024)03-0353-08
- 分类号:
- X515
- 文献标志码:
- A
- 摘要:
- 双流是成都臭氧污染较为严重的区域,分析该区域臭氧污染气象特征对双流及周边区域大气污染机理研究具有重要意义。研究基于地面监测和遥感观测数据,利用数理统计、GIS空间分析等方法对2019-2021年双流大气污染特征及其气象条件进行分析,结果表明:双流地区北风为主导风向,风速年际变化整体呈现逐年略微下降的趋势; 影响双流地区臭氧浓度的首要气象要素为温度(r=0.461),与空气相对湿度存在一定的负相关性(r=-0.307),在北风和弱风(<1.4 m/s)的条件下易出现高浓度臭氧污染; 8月为双流区太阳辐射夏季最高月,辐照度集中在700～720 W/m2; 云覆盖率在夏季的时间变化特征为7月>6月>8月; 对流层甲醛、二氧化氮柱浓度总体呈现由西北地区向东南地区递减的特点。
- Abstract:
- Shuangliu is an area with serious ozone pollution in Chengdu. Analyzing the meteorological characteristics of ozone pollution in this area is of great significance for the study of air pollution mechanisms in Shuangliu and surrounding areas. Based on ground monitoring and remote sensing observation data, this study uses mathematical statistics, GIS spatial analysis, and other methods to analyze the characteristics of air pollution and meteorological conditions in Shuangliu from 2019 to 2021. The results indicate that the dominant wind direction in Shuangliu area is north wind, and the variation of wind speed shows a downward trend. The primary meteorological element affecting the ozone concentration is temperature, the correlation coefficient(r)between the two is 0.461. The r between ozone concentration and relative humidity is -0.307.Ozone pollution is prone to occur under the conditions of north wind and low wind speed(<1.4 m/s). August is the month with the highest solar radiation in summer, and the irradiance is concentrated in the range of 700-720 W/m2. The time variation characteristics of cloud coverage in summer are July>June>August. The column concentrations of formaldehyde and nitrogen dioxide in the troposphere showed a decrease from the northwest region to the southeast region.
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备注/Memo
收稿日期:2023-05-06
通信作者:张洋.E-mail:zhangyang@cuit.edu.cn