Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 18, issue 21
Articles | Volume 18, issue 21
https://doi.org/10.5194/amt-18-5999-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-18-5999-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 21
Research article
 | 
03 Nov 2025
Research article |  | 03 Nov 2025

HoloTrack: in-situ holographic particle tracking velocimetry of cloud droplets

Birte Thiede, Freja Nordsiek, Yewon Kim, Eberhard Bodenschatz, and Gholamhossein Bagheri

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Short summary
HoloTrack is a fully autonomous system designed to capture detailed data on cloud droplets. It combines holographic imaging with environmental sensors to measure droplet size, movement, and surrounding air conditions. The system records hologram pairs to track droplet motion. While it can be used in the lab, it is mainly designed for in-flight use to measure cloud droplets in-situ. This paper presents the instrument’s design and evaluates its performance through testing.
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