天气类型及其对塞尔日-蓬图瓦兹城市PM10和O3浓度的影响

IF 2.6 3区 地球科学 Q3 METEOROLOGY & ATMOSPHERIC SCIENCES
S. Lagmiri, S. Dahech
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引用次数: 0

摘要

大气中污染物PM10和O3的日浓度随天气类型而变化。本研究旨在确定2009 - 2020年与PM10和O3污染事件相关的天气模式。确定了以超过世卫组织标准为特征的发作,并研究了其持续时间和持久性。结果表明,空气污染日与PM10的3种大气模式和O3的4种大气模式有关。主要的天气型态对应于中欧和东欧的反气旋形势,在法国上空有高压脊,位势高度为500 hPa。对于PM10,发现持续的高浓度序列与限制污染物垂直扩散的热逆温有关。对于O3,造成臭氧污染的四种天气类型均在夏季发生较多。最高百分比(46%的天数)与地面气压沼泽和500 hPa的脊(天气类型T1)的存在有关。同样,逆温和热风导致污染持续超过连续8天。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Weather types and their influence on PM10 and O3 urban concentrations in the Cergy-Pontoise conurbation
Daily atmospheric concentrations of the pollutants PM10 and O3 vary according to weather types. This study aims to identify the weather patterns associated with PM10 and O3 pollution episodes from 2009 to 2020. Episodes characterized by exceedance of WHO standards were identified, and their duration and persistence were studied. The results show that air pollution days are associated with three atmospheric patterns for PM10 and four for O3. The dominant weather pattern corresponds to an anticyclonic situation in central and eastern Europe with a ridge of high pressure over France at the surface and a 500 hPa geopotential height. For PM10, the persistent high-concentration sequences were found to be associated with a thermal inversion constraining the vertical dispersion of pollutants. For O3, the four weather types responsible for ozone pollution all have a higher occurrence in summer. The highest percentage (46% of days) is associated with the presence of a ground-level barometric swamp and a ridge at 500 hPa (weather type T1). Similarly, thermal inversions and thermal winds cause pollution to persist beyond 8 consecutive days.
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来源期刊
Journal of Applied Meteorology and Climatology
Journal of Applied Meteorology and Climatology 地学-气象与大气科学
CiteScore
5.10
自引率
6.70%
发文量
97
审稿时长
3 months
期刊介绍: The Journal of Applied Meteorology and Climatology (JAMC) (ISSN: 1558-8424; eISSN: 1558-8432) publishes applied research on meteorology and climatology. Examples of meteorological research include topics such as weather modification, satellite meteorology, radar meteorology, boundary layer processes, physical meteorology, air pollution meteorology (including dispersion and chemical processes), agricultural and forest meteorology, mountain meteorology, and applied meteorological numerical models. Examples of climatological research include the use of climate information in impact assessments, dynamical and statistical downscaling, seasonal climate forecast applications and verification, climate risk and vulnerability, development of climate monitoring tools, and urban and local climates.
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