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GPM Ground Validation Conical Scanning Millimeter-wave Imaging Radiometer (CoSMIR) OLYMPEX V1

Published by NASA/MSFC/GHRC | National Aeronautics and Space Administration | Catalog Last Checked: May 06, 2026 at 07:46 PM | Dataset Last Updated: March 31, 2025
The GPM Ground Validation Conical Scanning Millimeter-wave Imaging Radiometer (CoSMIR) OLYMPEX dataset consists of brightness temperatures from 9 channels as measured by CoSMIR when flown on the NASA DC-8 aircraft during the Global Precipitation Mission (GPM) Olympic Mountains Experiment (OLYMPEX) campaign. CoSMIR is a conical and cross-track scanning radiometer with frequencies centered at 50.3, 52.8, 89.0, 165.5, 183.31+/-1, 183.31+/-3, and 183.31+/-7 GHz. Data files are available from November 5, 2015 thru December 19, 2015 in HDF-5 format, with browse imagery files in PNG format containing brightness temperature time series plots.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "undefined",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:support-ghrc@earthdata.nasa.gov"
}
description The GPM Ground Validation Conical Scanning Millimeter-wave Imaging Radiometer (CoSMIR) OLYMPEX dataset consists of brightness temperatures from 9 channels as measured by CoSMIR when flown on the NASA DC-8 aircraft during the Global Precipitation Mission (GPM) Olympic Mountains Experiment (OLYMPEX) campaign. CoSMIR is a conical and cross-track scanning radiometer with frequencies centered at 50.3, 52.8, 89.0, 165.5, 183.31+/-1, 183.31+/-3, and 183.31+/-7 GHz. Data files are available from November 5, 2015 thru December 19, 2015 in HDF-5 format, with browse imagery files in PNG format containing brightness temperature time series plots.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "View this dataset's publications",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "A comparison of Near Concurrent Measurements from the SSMIS and CoSMIR for some Selected Channels over the Frequency Range of 50-183 GHz",
    "downloadURL": "https://doi.org/10.1109/TGRS.2007.904038"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View this dataset's publications",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Airborne CoSMIR Observations Between 50 and 183 GHz over Snow-Covered Sierra Mountains",
    "downloadURL": "https://doi.org/10.1109/TGRS.2006.885410"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Files may be downloaded directly to your workstation from this link",
    "downloadURL": "https://search.earthdata.nasa.gov/search?q=gpmcosmirolyx"
  },
  {
    "@type": "dcat:Distribution",
    "title": "The dataset's project home page",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "GHRC OLYMPEX project web page",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/home/field-campaigns/olympex"
  },
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    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Instructions for citing GHRC data",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/home/about-ghrc/citing-ghrc-daac-data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View the primary investigator's documentation for this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "OLYMPEX CoSMIR data ReadMe file",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/gpmValidation/olympex/CoSMIR/doc/readme_cosmir_olympex.txt"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View information related to this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "OLYMPEX Field Campaign Collection DOI",
    "downloadURL": "http://dx.doi.org/10.5067/GPMGV/OLYMPEX/DATA101"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View this dataset's publications",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Observations of Storm Signatures by the Recently Modified Conical Scanning Millimeter-Wave Imaging Radiometer",
    "downloadURL": "https://doi.org/10.1109/TGRS.2012.2200690"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View a micro article on this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Olympic Mountains Experiment (OLYMPEX) Micro Article",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/home/micro-articles/olympic-mountains-experiment-olympex"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Get a related visualization",
    "format": "PNG",
    "mediaType": "image/png",
    "description": "Sample Browse Image",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/gpmValidation/olympex/CoSMIR/browse/Conical_20151205.png"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Google Scholar search results",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Search results for publications that cite this dataset by its DOI.",
    "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2FGPMGV%2FOLYMPEX%2FCOSMIR%2FDATA301"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View this dataset's publications",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "The Olympic Mountains Experiment (OLYMPEX)",
    "downloadURL": "https://dx.doi.org/10.1175/BAMS-D-16-0182.1"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "The guide document contains detailed information about the dataset",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/gpmValidation/olympex/CoSMIR/doc/gpmcosmirolyx_dataset.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View information related to this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "University of Washington OLYMPEX project web site",
    "downloadURL": "http://olympex.atmos.washington.edu/"
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]
identifier C1979138680-GHRC_DAAC
issued 2017-09-15
keyword 
[
  "earth-science",
  "microwave",
  "spectral-engineering"
]
landingPage https://doi.org/10.5067/GPMGV/OLYMPEX/COSMIR/DATA301
language 
[
  "en-US"
]
modified 2025-03-31
programCode 
[
  "026:001"
]
publisher 
{
  "name": "NASA/MSFC/GHRC",
  "@type": "org:Organization"
}
spatial -129.622 29.9313 -117.697 49.7371
temporal 2015-11-05T00:00:00Z/2015-12-19T23:59:59Z
theme 
[
  "OLYMPEX",
  "geospatial"
]
title GPM Ground Validation Conical Scanning Millimeter-wave Imaging Radiometer (CoSMIR) OLYMPEX V1

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