Urban Air Pollution and Traffic Emissions: New prospects from an analysis at high temporal resolution

城市空气污染和交通排放:高时间分辨率分析的新前景

基本信息

项目摘要

This project wants to apply trace gas and particle measurements with very high temporal resolution at an urban traffic site in order to develop our understanding of pollution dynamics and emissions from traffic. Although the level of understanding about emissions and air pollutant concentrations is rather well developed, novel techniques shall enable us to analyze emission ratios NO / NO2 / NOx of single vehicles and cohorts of vehicles, the impact and interaction of these NOx emissions with the O3 chemistry, the emission ratios NH3 / CO2 and NOx / CO2 with very high temporal resolution, and the emissions of aerosol particles in a very wide spectrum of sizes (few nm up to at least 1 µm diameters) with 10 Hz resolution. New prospects will be opened on the understanding of aerosol dynamics directly after the emission from various types of vehicles under real-world conditions. The proposed concepts are in line with other recent concepts of urban air pollution and emission analysis such as multi-sensor approaches, mobile platform measurements, and eddy covariance. We propose basic research which will eventually and, in combination with other techniques and modelling activities, help to understand the urban landscape, which is influenced by a multitude of processes of high temporal and spatial variabilities. Bottom-up approaches to understand urban air pollution will become feasible. The core experiment will be a 18-month curbside measurement. Two intensive operation periods (IOPs) will add further aspects of spatial representativeness and more detailed information of the chemical composition of particles in their size spectra.
该项目希望在城市交通站点应用具有非常高的时间分辨率的痕量气体和颗粒测量,以发展我们对交通污染动态和排放的理解。虽然对排放和空气污染物浓度的理解水平已经相当成熟,但新技术将使我们能够分析单个车辆和车辆队列的排放比率NO / NO2 / NOx,这些NOx排放与O3化学的影响和相互作用,具有非常高的时间分辨率的排放比率NH3 / CO2和NOx / CO2,以及10 Hz分辨率的非常宽的尺寸范围(直径从几nm到至少1 µm)的气溶胶颗粒的排放。将打开新的前景,了解气溶胶动力学后,直接从各种类型的车辆在现实世界条件下的排放。所提出的概念是符合其他最近的城市空气污染和排放分析的概念,如多传感器的方法,移动的平台测量,涡度协方差。我们提出的基础研究,最终将与其他技术和建模活动相结合,有助于了解城市景观,这是由大量的高时空变化的过程的影响。自下而上的方法来了解城市空气污染将变得可行。核心实验将是为期18个月的路边测量。两个密集的操作期间(IOPs)将增加更多的空间代表性方面和更详细的信息,在其尺寸谱的颗粒的化学成分。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Modelling of Urban Air Pollutant Concentrations with Artificial Neural Networks Using Novel Input Variables
Source Apportionment of Urban Ammonia and its Contribution to Secondary Particle Formation in a Mid-size European City
  • DOI:
    10.4209/aaqr.2020.07.0404
  • 发表时间:
    2021-05-01
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Ehrnsperger, Laura;Klemm, Otto
  • 通讯作者:
    Klemm, Otto
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Professor Dr. Otto Klemm其他文献

Professor Dr. Otto Klemm的其他文献

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{{ truncateString('Professor Dr. Otto Klemm', 18)}}的其他基金

Anzahl- und Massenflüsse von Aerosolpartikeln über einer Stadt, erfasst mit hoher Größenauflösung
以高分辨率记录城市上空气溶胶颗粒的数量和质量流量
  • 批准号:
    122758571
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Net ecosystem exchange of CO2 and H2O in a subtropical mountain cloud forest (Taiwan)
亚热带山地云林中 CO2 和 H2O 的净生态系统交换(台湾)
  • 批准号:
    79828297
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Contribution of fog deposition to water and nutrient cycling in a subtropical mountain cloud forest
雾沉降对亚热带山地云林水和养分循环的贡献
  • 批准号:
    5427189
  • 财政年份:
    2004
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Quantifizierung des Eintrags von Wasser und ausgewählten Nährstoffen in ein Waldökosystem durch die Deposition von Nebel
通过雾的沉积量化进入森林生态系统的水和选定养分的输入
  • 批准号:
    5160188
  • 财政年份:
    1999
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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