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Integrating Cost-Effective Measurements and CFD Modeling for Accurate Air Quality Assessment

Ioannidis, Giannis; Tremper, Paul ORCID iD icon 1; Li, Chaofan ORCID iD icon 1; Riedel, Till ORCID iD icon 1; Rapkos, Nikolaos; Boikos, Christos; Ntziachristos, Leonidas
1 Institut für Telematik (TM), Karlsruher Institut für Technologie (KIT)

Abstract:

Assessing air quality in urban areas is vital for protecting public health, and low-cost sensor networks help quantify the population’s exposure to harmful pollutants effectively. This paper introduces an innovative method to calibrate air-quality sensor networks by combining CFD modeling with dependable AQ measurements. The developed CFD model is used to simulate traffic-related PM$_{10}$ dispersion in a 1.6 × 2 km$^2$ urban area. Hourly simulations are conducted, and the resulting concentrations are cross-validated against high-quality measurements. By offering detailed 3D information at a micro-scale, the CFD model enables the creation of concentration maps at sensor locations. Through regression analysis, relationships between low-cost sensor (LCS) readings and modeled outcomes are established and used for network calibration. The study demonstrates the methodology’s capability to provide aid to low-cost devices during a representative 24 h period. The precision of a CFD model can also guide optimal sensor placement based on prevailing meteorological and emission scenarios and refine existing networks for more accurate urban air quality representation. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000175049
Veröffentlicht am 18.10.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2024
Sprache Englisch
Identifikator ISSN: 2073-4433
KITopen-ID: 1000175049
Erschienen in Atmosphere
Verlag MDPI
Band 15
Heft 9
Seiten 1056
Vorab online veröffentlicht am 01.09.2024
Schlagwörter CFD, PM10, traffic, dispersion, calibration, low-cost sensors, air quality
Nachgewiesen in Dimensions
Web of Science
Scopus
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