Articles | Volume 12, issue 6
Atmos. Meas. Tech., 12, 3183–3208, 2019
https://doi.org/10.5194/amt-12-3183-2019
Atmos. Meas. Tech., 12, 3183–3208, 2019
https://doi.org/10.5194/amt-12-3183-2019

Research article 14 Jun 2019

Research article | 14 Jun 2019

A high-speed particle phase discriminator (PPD-HS) for the classification of airborne particles, as tested in a continuous flow diffusion chamber

Fabian Mahrt et al.

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A High Speed Particle Phase Discriminator (PPD-HS) for the classification of airborne particles, as tested in a continuous flow diffusion chamber F. Mahrt, J. Wieder, R. Dietlicher, H. R. Smith, C. Stopford, and Z. A. Kanji https://doi.org/10.3929/ethz-b-000313787

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Short summary
A new instrument, the High Speed Particle Phase Discriminator (PPD-HS), is presented, with the goal of quantifying liquid and ice fraction in conditions relevant for mixed-phase clouds. PPD-HS captures the near-forward spatial intensity distribution of scattered light on a single particle basis. Symmetry analysis of the scattering pattern is used to determine the shape of the particles, with cloud droplets and ice crystals producing symmetrical and asymmetrical scattering patterns, respectively.