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.
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.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Nov 2025
Research article |
| 03 Nov 2025
| 03 Nov 2025
HoloTrack: in-situ holographic particle tracking velocimetry of cloud droplets
Birte Thiede
Max Planck Institute for Dynamics and Self-Organization (MPI-DS), Am Faßberg 17, 37077 Göttingen, Germany
Faculty of Physics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
Freja Nordsiek
Max Planck Institute for Dynamics and Self-Organization (MPI-DS), Am Faßberg 17, 37077 Göttingen, Germany
Yewon Kim
Max Planck Institute for Dynamics and Self-Organization (MPI-DS), Am Faßberg 17, 37077 Göttingen, Germany
Eberhard Bodenschatz
Max Planck Institute for Dynamics and Self-Organization (MPI-DS), Am Faßberg 17, 37077 Göttingen, Germany
Faculty of Physics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
Laboratory of Atomic and Solid State Physics, Cornell University, 523 Clark Hall, Ithaca, NY 14853, USA
Gholamhossein Bagheri
CORRESPONDING AUTHOR
Max Planck Institute for Dynamics and Self-Organization (MPI-DS), Am Faßberg 17, 37077 Göttingen, Germany
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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.
HoloTrack is a fully autonomous system designed to capture detailed data on cloud droplets. It...
