Mobile Monitoring of Air Pollution Reveals Spatial and Temporal Variation in an Urban Landscape

Frontiers in Built Environment

Justin D. Stewart¹  Radley Reist²  Peleg Kremer²  Lucas E. Cummings²  Kabindra M. Shakya² 

[1] Department of Ecological Science, Vrije Universiteit Amsterdam, Amsterdam, Netherlands;Department of Geography and the Environment, Villanova University, Villanova, PA, United States;

关键词: particulate matter;    black carbon;    philadelphia;    mobile monitoring;    GIS–geographic information system;    hotspot analysis;   

DOI  :  10.3389/fbuil.2021.648620

来源: DOAJ

【 摘 要 】

Urban air pollution poses a major threat to human health. Understanding where and when urban air pollutant concentrations peak is essential for effective air quality management and sustainable urban development. To this end, we implement a mobile monitoring methodology to determine the spatiotemporal distribution of particulate matter (PM) and black carbon (BC) throughout Philadelphia, Pennsylvania and use hot spot analysis and heatmaps to determine times and locations where pollutant concentrations are highest. Over the course of 12 days between June 27 and July 29, 2019, we measured air pollution concentrations continuously across two 150 mile (241.4 km) long routes. Average daily mean concentrations were 11.55 ± 5.34 μg/m3 (PM1), 13.48 ± 5.59 μg/m3 (PM2.5), 16.13 ± 5.80 μg/m3 (PM10), and 1.56 ± 0.39 μg/m3 (BC). We find that fine PM size fractions (PM2.5) constitute approximately 84% of PM10 and that BC comprises 11.6% of observed PM2.5. Air pollution hotspots across three size fractions of PM (PM1, PM2.5, and PM10) and BC had similar distributions throughout Philadelphia, but were most prevalent in the North Delaware, River Wards, and North planning districts. A plurality of detected hotspots found throughout the data collection period (30.19%) occurred between the hours of 8:00 AM–9:00 AM.

【 授权许可】

Unknown