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Cloud Radar System (CRS) IMPACTS

Published by NASA/MSFC/GHRC | National Aeronautics and Space Administration | Catalog Last Checked: May 06, 2026 at 07:23 PM | Dataset Last Updated: April 20, 2026
The Cloud Radar System (CRS) IMPACTS dataset consists of calibrated radar reflectivity, Doppler velocity, linear depolarization ratio, and normalized radar cross-section estimates collected by the Cloud Radar System (CRS) onboard the NASA ER-2 high-altitude research aircraft. These data were gathered during the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) field campaign. IMPACTS was a three-year sequence of winter season deployments conducted to study snowstorms over the U.S. Atlantic Coast (2020-2023). The campaign aimed to (1) Provide observations critical to understanding the mechanisms of snowband formation, organization, and evolution; (2) Examine how the microphysical characteristics and likely growth mechanisms of snow particles vary across snowbands; and (3) Improve snowfall remote sensing interpretation and modeling to significantly advance prediction capabilities. The CRS IMPACTS dataset files are available from January 25, 2020, through February 28, 2023, in HDF-5 format.

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Complete Metadata
@type dcat:Dataset
accessLevel public
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                                            [
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contactPoint 
                                            {
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}
description The Cloud Radar System (CRS) IMPACTS dataset consists of calibrated radar reflectivity, Doppler velocity, linear depolarization ratio, and normalized radar cross-section estimates collected by the Cloud Radar System (CRS) onboard the NASA ER-2 high-altitude research aircraft. These data were gathered during the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) field campaign. IMPACTS was a three-year sequence of winter season deployments conducted to study snowstorms over the U.S. Atlantic Coast (2020-2023). The campaign aimed to (1) Provide observations critical to understanding the mechanisms of snowband formation, organization, and evolution; (2) Examine how the microphysical characteristics and likely growth mechanisms of snow particles vary across snowbands; and (3) Improve snowfall remote sensing interpretation and modeling to significantly advance prediction capabilities. The CRS IMPACTS dataset files are available from January 25, 2020, through February 28, 2023, in HDF-5 format.
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identifier 10.5067/IMPACTS/CRS/DATA101
keyword 
                                            [
  "earth-science-clouds-atmosphere-cloud-dynamics",
  "earth-science-precipitation-atmosphere-atmospheric-precipitation-indices",
  "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 2026-04-20
programCode 
                                            [
  "026:000"
]
publisher 
                                            {
  "name": "NASA/MSFC/GHRC",
  "@type": "org:Organization"
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spatial 
                                            "["CARTESIAN",[{"NorthBoundingCoordinate":48.658,"WestBoundingCoordinate":-95.46,"EastBoundingCoordinate":-64.894,"SouthBoundingCoordinate":31.073}]]"
temporal 2020-01-25/2023-02-28
theme 
                                            [
  "Earth Science"
]
title Cloud Radar System (CRS) IMPACTS

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