SID-3 Liquid and Ice Phase Particle Size Distributions measured during ACLOUD ...

• Main Authors: Järvinen, Emma, Schnaiter, Martin
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: ACLOUD; Arctic clouds; Polar 6; SID-3; size distribution; Event label; DATE/TIME; netCDF file; netCDF file File Size; Aircraft; Small Ice Detector Mark 3 SID-3; P6_206_ACLOUD_2017; POLAR 6; Arctic Amplification AC3; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.960269; https://doi.pangaea.de/10.1594/PANGAEA.960269

This data set contains particle size distributions of spherical and aspherical cloud particles between 5 and 45 microns with a 10-second time resolution calculated from the Small Ice Detector Mark 3 (SID-3). The SID-3 detects individual cloud particles passing a 532 nm laser beam using two nested trigger detectors. The trigger signal is recorded as a histogram with a maximum rate of 11 kHz that can be used to derive particle size distributions by using the procedure described in Vochezer et al. (2016), doi:10.5194/amt-9-159-2016. For a sub-set of triggered particles a two-dimensional (2-D) scattering pattern is recorded that can be analysed for particle sphericity by a specifically developed image analysis software. Occasionally, coincidence sampling in the camera field of view causes optical distortions of the 2-D scattering patterns of liquid droplets and, consequently, a misclassification of such scattering patterns to be aspherical by the classification software. For the subsequent identification and ...