Articles | Volume 15, issue 22
Research article
17 Nov 2022
Research article |  | 17 Nov 2022

A comparative evaluation of snowflake particle shape estimation techniques used by the Precipitation Imaging Package (PIP), Multi-Angle Snowflake Camera (MASC), and Two-Dimensional Video Disdrometer (2DVD)

Charles Nelson Helms, Stephen Joseph Munchak, Ali Tokay, and Claire Pettersen

Data sets

GPM Ground Validation Precipitation Imaging Package (PIP) ICE POP V1 Larry Bliven

Short summary
This study compares the techniques used to measure snowflake shape by three instruments: PIP, MASC, and 2DVD. Our findings indicate that the MASC technique produces reliable shape measurements; the 2DVD technique performs better than expected considering the instrument was designed to measure raindrops; and the PIP technique does not produce reliable snowflake shape measurements. We also demonstrate that the PIP images can be reprocessed to correct the shape measurement issues.