Comments are in the attached PDF.

Review of "Measurements of water droplet in a turbulent wind tunnel" by Frey et al. 2025

The manuscript presents a data set from the cloud-clear air entrainment-mixing experiments conducted at the LACIS-T wind tunnel facility. The experimental data are supplemented by simulations using the OpenFOAM CFD package.  The combined data set provides a unique opportunity to perform a process-level investigation of mixing characteristics at the cloud-clear air interface in a turbulent/shear environment resembling stratocumulus cloud tops or a fog layer. The data set could also be useful for model inter-comparison projects (e.g., a case for the next International Cloud Modeling Workshop) and evaluating different subgrid turbulence-microphysics interaction schemes. The authors should consider highlighting that in the manuscript.

In my view, the manuscript is well written, with a clear explanation of the data set, experimental conditions, model setup, and other relevant details. I have a few minor suggestions for the authors' consideration:

• L35: The authors could also mention the CloudKite measurements as another unique way to collect high-resolution data for entrainment-mixing studies.
• L82: It's confusing to see uncertainties reported as % +- some value. Do you mean  '1.5% |v| + 0.03 m/s' here?
• L179: Can the authors add a paragraph describing turbulence statistics in the measurement section? It would also be helpful to show PDFs of temperature, water vapor, and velocity fluctuations (and their moments) at different vertical locations in the mixing zone. 
• L204: The sentence starting with 'However' seems abrupt. I can't see any statement above that you are contrasting. Is there something missing?
• Please discuss the assumptions underlying the simulation setup in more detail. For example, does the condensation growth model include the curvature and solute effects (or a pure water drop assumed)?
• L227-229: Growth by drop collision-coalescence - But the droplet concentration distribution (left plot in Fig. 6) shows hardly any change for the large droplet tail concentrations. Normalized distributions (PDFs) can be misleading when comparing tails if the mode decreases more than the tails.
• L234: As I mentioned earlier, it would be very useful to discuss the turbulence statistics relevant for collision-coalescence (e.g., turbulent dissipation rates, Taylor's micro-scale Reynolds number, Stokes number, PDFs of velocity fluctuations, etc.).