Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 4
Articles | Volume 19, issue 4
https://doi.org/10.5194/amt-19-1293-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-1293-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 4
Research article
 | 
19 Feb 2026
Research article |  | 19 Feb 2026

Recalibration of low-cost O3 and PM2.5 sensors: linking practices to recent air sensor test protocols

Paul Gäbel and Elke Hertig

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Short summary
Our yearlong study examined the performance of low-cost sensors for monitoring ozone and fine particulate matter. They benefit from regular, in-season adjustments – monthly recalibration proved most effective – to deliver reliable data. Using an uncommon recalibration method and state-of-the-art air sensor test protocols for evaluation, we showed the importance of recurrent calibration to maximize sensor performance and to broaden their scope of application, particularly for ozone monitoring.
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