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ER-2 X-Band Doppler Radar (EXRAD) IMPACTS

Published by NASA/MSFC/GHRC | National Aeronautics and Space Administration | Catalog Last Checked: May 18, 2026 at 03:38 PM | Dataset Last Updated: May 11, 2026
The ER-2 X-band Radar (EXRAD) IMPACTS dataset consists of radar reflectivity and Doppler velocity estimates collected by the EXRAD 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 EXRAD IMPACTS dataset files are available from January 25, 2020, through March 2, 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 ER-2 X-band Radar (EXRAD) IMPACTS dataset consists of radar reflectivity and Doppler velocity estimates collected by the EXRAD 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 EXRAD IMPACTS dataset files are available from January 25, 2020, through March 2, 2023, in HDF-5 format.
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identifier 10.5067/IMPACTS/EXRAD/DATA101
keyword 
                                            [
  "earth-science-clouds-atmosphere-cloud-dynamics",
  "earth-science-radar-spectral-engineering-doppler-velocity",
  "earth-science-radar-spectral-engineering-radar-reflectivity"
]
license https://www.usa.gov/government-works
modified 2026-05-11
programCode 
                                            [
  "026:000"
]
publisher 
                                            {
  "name": "NASA/MSFC/GHRC",
  "@type": "org:Organization"
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spatial 
                                            "["CARTESIAN",[{"NorthBoundingCoordinate":48.658,"WestBoundingCoordinate":-117.635,"EastBoundingCoordinate":-67.286,"SouthBoundingCoordinate":27.106}]]"
temporal 2020-01-25/2023-03-02
theme 
                                            [
  "Earth Science"
]
title ER-2 X-Band Doppler Radar (EXRAD) IMPACTS

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