Articles | Volume 4, issue 2
https://doi.org/10.5194/ar-4-429-2026
https://doi.org/10.5194/ar-4-429-2026
Research article
 | 
16 Sep 2026
Research article |  | 16 Sep 2026

Look-up tables for complex refractive index correction of particle sizes measured by common research-grade optical particle counters

Paola Formenti and Claudia Di Biagio

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Short summary
This study improves the accuracy of optical particle counters (OPCs), instruments used to measure airborne particles important for air quality and climate research. Because OPC measurements depend not only on particle size but also on composition and shape, results can be uncertain. The paper provides a standardized database of correction factors for five commercial OPCs, helping researchers produce more reliable and consistent aerosol measurements across a wide range of atmospheric conditions.
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