空间变化,时间演变和来源方向分配的PM1,PM2.5,PM10:在都灵 (波尔多河谷) 的3年评估
D Mecca1, C Boanini1, V Vaccaro1
1Politecnico Di Torino, DIATI - Department of Environment, Land and Infrastructure Engineering, Turin, Italy.
Environmental monitoring and assessment
|November 25, 2024
概括
在都灵的城市空气质量分析显示,在交通站点有大量的颗粒物 (PM) 污染,特别是PM10和PM2.5. 污染源从波尔多河谷和撒哈拉沙漠的尘埃运输被确定.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 城市气候学 城市气候学
背景情况:
- 随着城市人口的不断增长,人们需要了解颗粒物动态.
- 位于波河谷的都灵是一个重要的欧洲污染热点.
- 颗粒物 (PM1,PM2.5,PM10) 影响城市空气质量和公共健康.
研究的目的:
- 在都灵调查PM1,PM2.5和PM10的时间和空间变化.
- 使用条件二变概率函数 (CBPF) 分析颗粒物来源方向.
- 评估污染趋势,包括在COVID-19封锁期间.
主要方法:
- 2018-2021年高分辨率监测活动数据.
- 对颗粒物度 (PM1,PM2.5,PM10) 的分析.
- 条件双变概率函数 (CBPF) 的应用用于源分配.
主要成果:
- 背景 (28-30 μg/m3) 和交通 (36 μg/m3) 站之间的PM10度存在显著差异.
- 在交通站记录的最高PM2.5度 (24μg/m3).
- 每日PM度峰值在上午9:00-11:00观察到,趋势有季节性变化.
结论:
- 对都灵的外部颗粒物物贡献来源于波河谷 (N-NE) 和撒哈拉沙漠尘埃运输 (S-SW).
- 这项研究提高了对欧洲主要城市中心空气污染动态的理解.
- 提供了有关PM1等新兴污染物及其在城市环境中的趋势的见解.
相关概念视频
01:18Variation of Atmospheric Pressure
Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
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The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...