This SINGH_readme20250103.txt file was generated on 20250103 by Kaylee Alexander ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Settling and Rotation of Frozen Hydrometeors in Turbulent Air 2. Author Information Principal Investigator Contact Information Name: Dhiraj K. Singh Institution: Mechanical Engineering, University of Utah Address: 1495 E 100 Salt Lake City, UT 84112 Email: u6021818@utah.edu ORCID: 0000-0001-9149-6432 Associate or Co-investigator Contact Information Name: Timothy J. Garrett Institution: Atmospheric Sciences, University of Utah Address: 135 S 1460 E, Salt Lake City, UT 84112 Email: tim.garrett@utah.edu ORCID: 0000-0001-9277-8773 Alternate Contact Information Name: Eric R. Pardyjak Institution: Mechanical Engineering, University of Utah Address: 1495 E 100 S Salt Lake City, UT 84112 Email: eric.pardyjak@utah.edu ORCID: 0000-0002-0180-0857 3. Date of data collection (single date, range, approximate date) 20201101 to 20210530 4. Geographic location of data collection (where was data collected?): NA 5. Information about funding sources that supported the collection of the data: NSF PDM-1841870; NSF PDM-2210179 -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CCO - As the data author, you are choosing to place your data into the public domain. 2. Links to publications that cite or use the data: NA 3. Links to other publicly accessible locations of the data: NA 4. Links/relationships to ancillary data sets: NA 5. Was data derived from another source? No 6. Recommended citation for the data: Singh, Dhiraj K., Timothy J. Garrett, and Eric R. Pardyjak. 2025. "Settling and Rotation of Frozen Hydrometeors in Turbulent Air." The Hive: University of Utah Research Data Repository. https://doi.org/10.7278/S5d-44hp-6sdg. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: 20241226_Averages_Singh.mat Short description: Average data set of Drift angle, Orientation, Settling velocity, Sv, Terminal velocity, and wind velocity for 12 cases. The time interval of each case is 12, 15, 7, 11, 7, 7, 12, 15, 12, and 15 minutes. B. Filename: 20241226_ProbabilityDistribution_Singh.mat Short description: These data sets are associated with individual particle Settling velocities for three different Settling parameters, Sv, and terminal velocity, using three different methods, PTV, DEID, and PTV-DEID C. Filename: 20241226_Video_Singh.avi Short description: This is a video of single snowflakes in low turbulence conditions. 2. Relationship between files: NA 3. Additional related data collected that was not included in the current data package: NA 4. Are there multiple versions of the dataset? No -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Data collection methods are described in the following papers: -Singh, D. K., Pardyjak, E. R., and Garrett, T. J. (2024). Time-resolved measurements of the densities of individual frozen hydrometeors and fresh snowfall. Atmospheric Measurement Techniques 17, 4581–4598, https://doi.org/10.5194/amt-17-4581-2024. -Singh, D. K., Pardyjak, E. R., and Garrett, T. J. (2023). A universal scaling law for Lagrangian snowflake accelerations in atmospheric turbulence. Physics of Fluids 35, 123336, https://doi.org/10.1063/5.0173359. -Singh, D. K., Donovan, S., Pardyjak, E. R., and Garrett, T. J. (2021). A differential emissivity imaging technique for measuring hydrometeor mass and type. Atmospheric Measurement Techniques 14, 6973–6990, https://doi.org/10.5194/amt-14-6973-2021. 2. Methods for processing the data: Data processing methods are based on particle tracking velocimetry and the DEID instrument. Details of methods and procedure are explained in the following papers: -Singh, D. K., Pardyjak, E. R., and Garrett, T. J. (2024). Time-resolved measurements of the densities of individual frozen hydrometeors and fresh snowfall. Atmospheric Measurement Techniques 17, 4581–4598, https://doi.org/10.5194/amt-17-4581-2024. -Singh, D. K., Pardyjak, E. R., and Garrett, T. J. (2023). A universal scaling law for Lagrangian snowflake accelerations in atmospheric turbulence. Physics of Fluids 35, 123336, https://doi.org/10.1063/5.0173359. -Singh, D. K., Donovan, S., Pardyjak, E. R., and Garrett, T. J. (2021). A differential emissivity imaging technique for measuring hydrometeor mass and type. Atmospheric Measurement Techniques 14, 6973–6990, https://doi.org/10.5194/amt-14-6973-2021. 3. Instrument- or software-specific information needed to interpret the data: MATLAB 4. Standards and calibration information, if appropriate: NA 5. Environmental/experimental conditions: Environmental conditions are explained in the following papers: -Singh, D. K., Pardyjak, E. R., and Garrett, T. J. (2024). Time-resolved measurements of the densities of individual frozen hydrometeors and fresh snowfall. Atmospheric Measurement Techniques 17, 4581–4598, https://doi.org/10.5194/amt-17-4581-2024. -Singh, D. K., Pardyjak, E. R., and Garrett, T. J. (2023). A universal scaling law for Lagrangian snowflake accelerations in atmospheric turbulence. Physics of Fluids 35, 123336, https://doi.org/10.1063/5.0173359. -Singh, D. K., Donovan, S., Pardyjak, E. R., and Garrett, T. J. (2021). A differential emissivity imaging technique for measuring hydrometeor mass and type. Atmospheric Measurement Techniques 14, 6973–6990, https://doi.org/10.5194/amt-14-6973-2021. 6. Describe any quality-assurance procedures performed on the data: The standard protocol of Particle Tracking Velocimetry is used. 7. People involved with sample collection, processing, analysis and/or submission: NA ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241226_Averages_Singh.mat ----------------------------------------- 1. Number of variables: 6 2. Number of cases/rows: 12 3. Variable List A. Name: DriftAngle Description: Average fall angle of particles with vertical axis B. Name: OrientationAngle Description: Average orientation angle of particles with horizontal axis C. Name: SettlingVelocity Description: Average settling velocity D. Name: Sv Description: Settling parameters E. Name: TerminalVelocity Description: Average terminal velocity F. Name: WindSpeed Description: Average air speed 4. Missing data codes: NA 5. Specialized formats of other abbreviations used: NA ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241226_ProbabilityDistribution_Singh.mat ----------------------------------------- 1. Number of variables: 2 2. Number of cases/rows: >2 million 3. Variable List A. Name: TerminalVelocity Description: Terminal velocity B. Name: SettlingVelocity Description: Settling velocity 4. Missing data codes: NA 5. Specialized formats of other abbreviations used: NA