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Description

The GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar OLYMPEX V2 dataset consists of rain rate, reflectivity, Doppler velocity, and other radar measurements obtained from the NPOL radar during the Global Precipitation Mission (GPM) Olympic Mountains Experiment (OLYMPEX) campaign. NPOL,developed by a research team from Wallops Flight Facility, is a fully transportable and self-contained S-band (10 cm), scanning dual-polarimetric Doppler research radar that was placed near the ocean on the Olympic Peninsula. Data files are available from November 5, 2015 thru January 15, 2016 in Universal Format (UF), with browse imagery files in PNG format containing corrected radar reflectivity, differential reflectivity, specific differential phase, differential phase, co-polar correlation, and Doppler velocity images.

Product Summary

Platforms
GROUND STATIONS
Instruments
NPOL
Spatial Extent

N: 48.6684 S: 45.9605 E: -122.256 W: -126.275

Location
WASHINGTON
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-11-05 to 2016-01-15
Data Partner
Global Hydrometeorology Resource Center, Marshall Space Flight Center, NASA (NASA/MSFC/GHRC)
Concept ID
C1979639066-GHRC_DAAC
Data State
COMPLETE
Number of Files/Granules
48
Processing Level
1B
Published
Updated
Science Keywords
SPECTRUM WIDTH ,
Total Precipitable Water ,
Radar Reflectivity ,
Doppler Velocity ,
Precipitation Rate

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

David Wolff, D. M. (2025). GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar OLYMPEX [Data set]. NASA Global Hydrometeorology Resource Center Distributed Active Archive Center. https://doi.org/10.5067/GPMGV/OLYMPEX/NPOL/DATA301 Date Accessed: 2026-05-14

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
Observed and simulated characteristics of down-valley flow within stratiform precipitation over the Olympic Peninsula Conrick, Robert, Boomgard-Zagrodnik, Joseph P., McMurdie, Lynn A. SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate, Precipitation Amount
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
Dual-Polarization Deconvolution and Geophysical Retrievals from the Advanced Microwave Precipitation Radiometer during OLYMPEX/RADEX Amiot, Corey G., Biswas, Sayak K., Lang, Timothy J., Duncan, David I. SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate, Atmospheric Pressure Measurements, Upper Air Temperature, Dew Point Temperature, Relative Humidity, U/V Wind Components, Flight Level Winds, Wind Direction, Wind Speed
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
Dual-polarization radar retrievals of coastal pacific northwest raindrop size distribution parameters using random forest regression Conrick, Robert, Zagrodnik, Joseph P., Mass, Clifford F. 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, Particle Size Distribution
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
Terrainenhanced precipitation processes above the melting layer: Results from OLYMPEX McMurdie, L. A., Rowe, A. K., Houze, R. A., Brodzik, S. R., Zagrodnik, J. P., Schuldt, T. M. Atmospheric Water Vapor, Precipitation, RADAR, SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate, Atmospheric Pressure Measurements, Dew Point Temperature, Relative Humidity, Horizontal Wind Velocity/Speed, Vertical Wind Velocity/Speed, Wind Direction, Geopotential Height, Wind Speed
Retrieval of snowflake microphysical properties from multifrequency radar observations Leinonen, Jussi, Lebsock, Matthew D., Tanelli, Simone, Sy, Ousmane O., Dolan, Brenda, Chase, Randy J., Finlon, Joseph A., von Lerber, Annakaisa, Moisseev, Dmitri SPECTRUM WIDTH, Total Precipitable Water, Radar Reflectivity, Doppler Velocity, Precipitation Rate
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