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GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar OLYMPEX

Published by NASA/MSFC/GHRC | National Aeronautics and Space Administration | Catalog Last Checked: May 18, 2026 at 03:35 PM | Dataset Last Updated: May 11, 2026
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.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
                                            [
  "026:00"
]
contactPoint 
                                            {
  "fn": "Earthdata Forum",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:earthdata-support@nasa.gov"
}
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.
distribution 
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identifier 10.5067/GPMGV/OLYMPEX/NPOL/DATA301
keyword 
                                            [
  "earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators-total-precipitable-wate",
  "earth-science-precipitation-atmosphere-precipitation-rate",
  "earth-science-radar-spectral-engineering-doppler-velocity",
  "earth-science-radar-spectral-engineering-radar-reflectivity",
  "earth-science-radar-spectral-engineering-spectrum-width"
]
license https://www.usa.gov/government-works
modified 2026-05-11
programCode 
                                            [
  "026:000"
]
publisher 
                                            {
  "name": "NASA/MSFC/GHRC",
  "@type": "org:Organization"
}
spatial 
                                            "["CARTESIAN",[{"WestBoundingCoordinate":-126.275,"NorthBoundingCoordinate":48.6684,"EastBoundingCoordinate":-122.256,"SouthBoundingCoordinate":45.9605}]]"
temporal 2015-11-05/2016-01-15
theme 
                                            [
  "Earth Science"
]
title GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar OLYMPEX

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