Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 14
Articles | Volume 19, issue 14
https://doi.org/10.5194/amt-19-4923-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-4923-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 14
Research article
 | 
30 Jul 2026
Research article |  | 30 Jul 2026

Operational performance of the Vaisala CL61 ceilometer for atmospheric profiling

Viet Le, Ewan J. O'Connor, Maria Filioglou, and Ville Vakkari

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Short summary
We evaluate the performance of the Vaisala CL61 ceilometer, with depolarization ratio capability at 910 nm, over a three-year period at four locations. This study examines instrument performance over time, describes methods for correcting instrument bias and presents corresponding uncertainty estimates. As these instruments are being deployed across large research networks, our findings support stable instrument performance and the generation of reliable measurements and derived products.
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