Mobile Observations of Air Pollution in an Urban Area: Characteristics and Variability
Abstract
Urban air pollution exhibits pronounced spatial heterogeneity, yet conventional fixed-site monitoring often cannot resolve fine-scale hotspot patterns. To address this issue, this study conducted a winter intensive observation campaign combining mobile measurements and synchronous fixed-site observations in Chengdu. The mobile observation was used to characterize the spatial distribution of particulate pollution, while fixed-site pollutant and meteorological data were used to provide temporal and background context. Three mobile observation sessions were performed each day at fixed local times (09:00–11:00, 14:00–16:00, and 19:00–21:00). Based on the PM2.5 concentration, the observation period was categorized into two episodes: polluted episodes (PM2.5 > 75 μg m−3) and clean episodes (
Fields of Study & Subjects
Atmospheric chemistry and aerosols
Air Quality and Health Impacts
Air Quality Monitoring and Forecasting
Publication details
- Journal / source
- Atmosphere
- Publisher
- MDPI AG
- Volume
- 17
- Issue
- 5
- Pages
- 488–488
- Publication date
- 11 May 2026
- Language
- EN