Skip to main content

Description

The GPM Ground Validation Doppler on Wheels (DOW) OLYMPEX V2 dataset was obtained by a dual-polarization and dual-frequency X-band mobile radar operated by the Center for Severe Weather Research (CSWR) during the Olympic Mountain Experiment (OLYMPEX) campaign. The DOW was deployed in the Chehalis Valley for the OLYMPEX field campaign with the goal of obtaining radar reflectivity and Doppler velocity observations in order to better understand the orographic enhancement of precipitation during frontal passages over mountain ranges. The DOW radar uses two 250 kW transmitters with a measurement range of roughly 60 km. These data are available in CFradial netCDF-4 format from November 6, 2015 through January 15, 2016.

Product Summary

Platforms
GROUND STATIONS
Instruments
DOW
Spatial Extent

N: 48.0271 S: 46.9499 E: -123.331 W: -124.408

Location
WASHINGTON
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-11-06 to 2016-01-15
Data Partner
Global Hydrometeorology Resource Center, Marshall Space Flight Center, NASA (NASA/MSFC/GHRC)
Concept ID
C1980430683-GHRC_DAAC
Data State
COMPLETE
Number of Files/Granules
12475
Processing Level
2
Published
Updated
Science Keywords
Doppler Velocity ,
Radar Reflectivity

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

Robert Houze, J. W. (2025). GPM Ground Validation Doppler on Wheels (DOW) OLYMPEX V2 [Data set]. NASA Global Hydrometeorology Resource Center Distributed Active Archive Center. https://doi.org/10.5067/GPMGV/OLYMPEX/DOW/DATA201 Date Accessed: 2026-05-25

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
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
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
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
Evaluation of X-Band dual-polarization radar-rainfall estimates from OLYMPEX Derin, Yagmur, Anagnostou, Emmanouil, Anagnostou, Marios, Kalogiros, John Precipitation Amount, Precipitation Rate, Droplet Size, Hydrometeors, Liquid Precipitation, Drizzle, Rain, Liquid Water Equivalent, Precipitation Anomalies, Snow Water Equivalent, Solid Precipitation, Total Surface Precipitation Rate, Radar Reflectivity, Doppler Velocity
You're viewing 4 of 4