Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 13
Articles | Volume 19, issue 13
https://doi.org/10.5194/amt-19-4505-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-4505-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 13
Research article
 | 
09 Jul 2026
Research article |  | 09 Jul 2026

Comparison of particle number concentrations measured with AQ Urban sensors in two different environments in Helsinki, Finland

Kimmo Teinilä, Teemu Lepistö, Jarkko V. Niemi, Harri Portin, Anssi Julkunen, Anu Kousa, Joel Kuula, Hanna E. Manninen, Pasi Aalto, Tuukka Petäjä, Topi Rönkkö, Erkka Saukko, and Hilkka Timonen

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Short summary
Particle number concentrations were measured with condensation particle counters and diffusion-based sensors at two different urban environments in Helsinki in 2022. The measurement sites were traffic related and background urban sites. The aim of the study was to investigate suitability of using diffusion-based sensors in urban air quality monitoring to obtain particle number concentrations and challenges related to this.
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