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Description

The GPM Ground Validation NCAR Particle Probes OLYMPEX dataset consists of ice water content, particle concentration normalized by bin width, and total particle concentration collected from three instruments flown on the University of North Dakota (UND) Citation aircraft during selected dates in November and December 2015. The PMS Two-Dimensional Cloud probe (2D-C), the SPEC Two-dimensional Stereo probe (2D-S), and two SPEC High Volume Precipitation Spectrometer 3 (HVPS-3) instruments were used in the Global Precipitation Mission (GPM) Olympic Mountains Experiment (OLYMPEX) campaign. All instruments are two-dimensional optical array probes which record images of particles that travel through the sampling area. Data files are available in ASCII format, and browse images are available in PNG format.

Product Summary

Platforms
UND CITATION II
Instruments
2DC ,
2DS ,
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 2015-12-20
Data Partner
Global Hydrometeorology Resource Center, Marshall Space Flight Center, NASA (NASA/MSFC/GHRC)
Concept ID
C1979667997-GHRC_DAAC
Data State
COMPLETE
Number of Files/Granules
126
Processing Level
2
Published
Updated
Science Keywords
Cloud Liquid Water/Ice ,
Cloud Droplet Concentration/Size ,
Particle Size Distribution

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

Andrew Heymsfield, A. B. (2025). GPM Ground Validation NCAR Particle Probes OLYMPEX [Data set]. NASA Global Hydrometeorology Resource Center Distributed Active Archive Center. https://doi.org/10.5067/GPMGV/OLYMPEX/PROBES/DATA201 Date Accessed: 2026-05-13

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
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
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
The microphysics of stratiform precipitation during OLYMPEX: Compatibility between triplefrequency radar and airborne in situ observations Tridon, Frederic, Battaglia, Alessandro, Chase, Randy J., Turk, F. Joseph, Leinonen, Jussi, Kneifel, Stefan, Mroz, Kamil, Finlon, Joseph, Bansemer, Aaron, Tanelli, Simone, Heymsfield, Andrew J., Nesbitt, Stephen W. Cloud Liquid Water/Ice, Cloud Droplet Concentration/Size, Particle Size Distribution
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