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Description

The GPM Ground Validation UND Citation Cloud Microphysics OLYMPEX dataset includes measurements of cloud microphysics, state of the atmosphere parameters, three-dimensional winds, and turbulence. These measurements were taken during the OLYMPEX campaign by the University of North Dakota’s (UND) Cessna Citation II aircraft over a series of 20 flights totaling roughly 60 flight hours. The UND Citation Cloud Microphysics data are stored as separate files for each flight, with a primary (*.olympex) file containing both direct and derived parameters. Raw data files for each instrument are also archived for investigators who wish to use their own processing software. Data are available from flights that occurred from November 12, 2015 through December 19, 2015 in ASCII, ASCII-csv, and binary formats, while browse images are available in PNG format.

Product Summary

Platforms
UND CITATION II
Instruments
2DC ,
2DS ,
CDP ,
CPI PROBES ,
HVPS
Spatial Extent

N: 48.3535 S: 46.2209 E: -97.1811 W: -126.129

Location
WASHINGTON
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-11-12 to 2015-12-19
Data Partner
Global Hydrometeorology Resource Center, Marshall Space Flight Center, NASA (NASA/MSFC/GHRC)
Concept ID
C1979132803-GHRC_DAAC
Data State
COMPLETE
Number of Files/Granules
978
Processing Level
2
Published
Updated
Science Keywords
Cloud Microphysics ,
Cloud Liquid Water/Ice ,
Cloud Droplet Concentration/Size ,
Particle Size Distribution ,
Water Vapor Indices

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Michael Poellot, A. H. (2025). GPM Ground Validation UND Citation Cloud Microphysics OLYMPEX [Data set]. NASA Global Hydrometeorology Resource Center Distributed Active Archive Center. https://doi.org/10.5067/GPMGV/OLYMPEX/MULTIPLE/DATA201 Date Accessed: 2026-05-17

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
A Simple Snowfall Retrieval Algorithm for the GPM Dual-Frequency Akiyama, S., Shige, S., Aonashi, K., Iguchi, T. Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution, Cloud Microphysics, Water Vapor Indices, SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate
The Chalmers Cloud Ice Climatology: retrieval implementation and validation Amell, Adria, Pfreundschuh, Simon, Eriksson, Patrick Precipitation, Brightness Temperature, Atmospheric Emitted Radiation, Emissivity, Optical Depth/Thickness, Radiative Flux, Reflectance, Transmittance, Clouds, Cloud Condensation Nuclei, Cloud Droplet Concentration/Size, Cloud Liquid Water/Ice, Cloud Optical Depth/Thickness, Cloud Precipitable Water, Cloud Asymmetry, Cloud Ceiling, Cloud Frequency, Cloud Height, Cloud Top Pressure, Cloud Top Temperature, Cloud Vertical Distribution, Cloud Emissivity, Cloud Radiative Forcing, Cloud Reflectance, Cloud Types, Cloud Microphysics, Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution, Water Vapor Indices, Radar Reflectivity, Doppler Velocity, Radar Backscatter, Radar Cross-Section, Return Power, Cloud Droplet Distribution, MEAN RADIAL VELOCITY
Evaluation of polarimetric ice microphysical retrievals with OLYMPEX campaign data Blanke, Armin, Heymsfield, Andrew J., Moser, Manuel, Tromel, Silke Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution, Cloud Microphysics, Water Vapor Indices, Doppler Velocity, Radar Reflectivity
Multiscale interactions contributing to enhanced orographic precipitation in landfalling frontal systems over the Olympic peninsula Dolan, Brenda, Rutledge, Steven A., Rasmussen, Kristen L. Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution, Cloud Microphysics, Water Vapor Indices, SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate, Droplet Size, Precipitation Amount, Hydrometeors, Liquid Precipitation, Drizzle, Rain, Liquid Water Equivalent, Precipitation Anomalies, Snow Water Equivalent, Solid Precipitation, Total Surface Precipitation Rate, Airspeed/Ground Speed, Flight Data Logs, Attitude Characteristics, Flight Level Winds
Orographically Modified Ice-Phase Precipitation Processes during the Olympic Mountains Experiment (OLYMPEX) DeLaFrance, Andrew, McMurdie, Lynn, Rowe, Angela Cloud Microphysics, Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution, Water Vapor Indices, SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate, Precipitation Amount, Droplet Size, Hydrometeors, Liquid Precipitation, Drizzle, Rain, Liquid Water Equivalent, Precipitation Anomalies, Snow Water Equivalent, Solid Precipitation, Total Surface Precipitation Rate, Atmospheric Pressure Measurements, Dew Point Temperature, Relative Humidity, Horizontal Wind Velocity/Speed, Vertical Wind Velocity/Speed, Wind Direction, Geopotential Height, Wind Speed
Triple-frequency radar retrieval of microphysical properties of snow Mroz, Kamil, Battaglia, Alessandro, Nguyen, Cuong, Heymsfield, Andrew, Protat, Alain, Wolde, Mengistu Turbulence, Attitude Characteristics, Cloud Droplet Concentration/Size, Dew Point Temperature, Cloud Liquid Water/Ice, Cloud Microphysics, Particle Size Distribution, Water Vapor Indices, Particulate Matter, Aerosol Particle Properties
Evaluating warm and cold rain processes in cloud microphysical schemes using OLYMPEX field measurements Naeger, Aaron R., Colle, Brian A., Zhou, Na, Molthan, Andrew SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate, Droplet Size, Precipitation Amount, Hydrometeors, Liquid Precipitation, Drizzle, Rain, Liquid Water Equivalent, Precipitation Anomalies, Snow Water Equivalent, Solid Precipitation, Total Surface Precipitation Rate, Atmospheric Pressure Measurements, Dew Point Temperature, Relative Humidity, Horizontal Wind Velocity/Speed, Vertical Wind Velocity/Speed, Wind Direction, Geopotential Height, Wind Speed, Cloud Microphysics, Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution, Water Vapor Indices
A Versatile Method for Ice Particle Habit Classification Using Airborne Praz, C., Ding, S., McFarquhar, G. M., Berne, A. Cloud Microphysics, Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution, Water Vapor Indices
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