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Temporal and spatial analysis of traffic – Related pollutant under the influence of the seasonality and meteorological variables over an urban city in Peru

机译:秘鲁城市城市季节性与气象变量影响下交通相关污染物的时间和空间分析

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摘要

A four yearlong air monitoring data (since 2015 to 2018) was collected to assess the impact of meteorological parameters such as temperature, relative humidity, wind speed and wind direction on the spatial and temporal variability of CO (carbon monoxide), NO2 (nitrogen oxide), O3 (ozone), SO2 (sulfur dioxide), PM10 and PM2.5 (particulate matter with diameter aerodynamic less than 2.5 μm and 10 μm respectively) in Lima Metropolitan Area (LMA). Data from eight air quality monitoring stations, currently under the supervision of the National Meteorological and Hydrological Service (SENAMHI), was used to capture traffic – related pollutants concentrations under various local traffic conditions. Effects on meteorological events on seasonal traffic-related pollutants concentration variability were identified. Using average data from the eight stations, it was found that the monthly mean traffic-related pollutants since 2015 to 2018 were higher in spring and winter and lower in autumn and summer. Low-wind speed was associated with events that contribute to elevated seasonal PM2.5 levels. Correlation coefficients between PM2.5 concentrations and meteorological variables fluctuated significaly across different seasons. High PM2.5 concentrations were associated with low relative humidity and high wind conditions in spring. Results suggest that there exist a seasonal variation of PM2.5 concentration, and set the need of future work on the understanding of the air pollution effects on human health.
机译:收集了四个历史空气监测数据(自2015年至2018年),以评估气象参数如温度,相对湿度,风速和风向的影响,如CO(一氧化碳),NO2(氮氧化物)的空间和时间变异性),o3(臭氧),SO2(二氧化硫),PM10和PM2.5(分别在Lima Metropolitan(LMA)中分别为10μm的直径空气动力学的颗粒物质和10μm)。目前在国家气象和水文服务(Senamhi)监督下,八个空气质量监测站的数据用于在各种局部交通条件下捕获交通相关的污染物浓度。确定了对季节性交通相关污染物浓度变异性的气象事件的影响。使用来自八个站的平均数据,发现自2015年至2018年以来的月平均相关的污染物在春季和冬季和秋季和夏季更低。低风速与有助于升高的季节性PM2.5水平的事件有关。不同季节PM2.5浓度与气象变量之间的相关系数波动。高PM2.5浓度与弹簧的低相对湿度和高风条件相关。结果表明,PM2.5集中的季节变化,并确定了未来工作的需要,了解对人体健康的空气污染影响。

著录项

  • 期刊名称 Heliyon
  • 作者单位
  • 年(卷),期 2020(6),6
  • 年度 2020
  • 页码 e04029
  • 总页数 12
  • 原文格式 PDF
  • 正文语种
  • 中图分类
  • 关键词

    机译:温度;湿度;风速;利马大都市区;与交通相关的污染物;大气科学;环境分析;环境评估;环境污染;环境污染;环境科学;空气质量;

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