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GPM GROUND VALIDATION NASA MICRO RAIN RADAR (MRR) GCPEX V2

Published by NASA/MSFC/GHRC | National Aeronautics and Space Administration | Catalog Last Checked: February 14, 2026 at 08:24 PM | Dataset Last Updated: March 31, 2025
The GPM Ground Validation NASA Micro Rain Radar (MRR) GCPEx dataset was collected by a Micro Rain Radar (MRR), which is a vertically pointing Doppler radar which provides measurements of vertical velocity, drop size distribution, rainfall rate, attenuation, liquid water content, and reflectivity factor obtained during the GPM Cold-season Precipitation Experiment (GCPEx), which took place in Canada during Winter 2011-2012. GCPEx addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow. The MRR is a frequency-modulated continuous wave (FMCW) vertically pointing Doppler radar, which operates at 24.24GHz, and it is the second generation of the instrument manufactured by METEK (http://metek.de/product/mrr-2/). NASA MRR data was collected from late October 2011 through March 2013. Version 2 of the dataset became active on 13-May-2015.

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Complete Metadata
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description The GPM Ground Validation NASA Micro Rain Radar (MRR) GCPEx dataset was collected by a Micro Rain Radar (MRR), which is a vertically pointing Doppler radar which provides measurements of vertical velocity, drop size distribution, rainfall rate, attenuation, liquid water content, and reflectivity factor obtained during the GPM Cold-season Precipitation Experiment (GCPEx), which took place in Canada during Winter 2011-2012. GCPEx addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow. The MRR is a frequency-modulated continuous wave (FMCW) vertically pointing Doppler radar, which operates at 24.24GHz, and it is the second generation of the instrument manufactured by METEK (http://metek.de/product/mrr-2/). NASA MRR data was collected from late October 2011 through March 2013. Version 2 of the dataset became active on 13-May-2015.
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identifier C1979629962-GHRC_DAAC
issued 2015-05-13
keyword 
[
  "atmosphere",
  "earth-science",
  "precipitation",
  "radar",
  "spectral-engineering"
]
landingPage https://doi.org/10.5067/GPMGV/GCPEX/MRR/DATA204
language 
[
  "en-US"
]
modified 2025-03-31
programCode 
[
  "026:001"
]
publisher 
{
  "name": "NASA/MSFC/GHRC",
  "@type": "org:Organization"
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spatial -79.7814 44.1806 -79.7175 44.2336
temporal 2011-10-24T20:59:00Z/2012-03-13T15:14:00Z
theme 
[
  "GCPEx",
  "geospatial"
]
title GPM GROUND VALIDATION NASA MICRO RAIN RADAR (MRR) GCPEX V2

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