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Water Isotope System for Precipitation and Entrainment Research (WISPER) IMPACTS

Published by NASA/MSFC/GHRC | National Aeronautics and Space Administration | Catalog Last Checked: June 25, 2026 at 02:10 PM | Dataset Last Updated: June 23, 2026
The Water Isotope System for Precipitation and Entrainment Research (WISPER) IMPACTS dataset consists of condensed water contents, water vapor measurements, and isotope ratios in support of 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 dataset files are available in ASCII format from January 18, 2020, through February 28, 2023.

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Complete Metadata
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accessLevel public
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contactPoint 
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description The Water Isotope System for Precipitation and Entrainment Research (WISPER) IMPACTS dataset consists of condensed water contents, water vapor measurements, and isotope ratios in support of 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 dataset files are available in ASCII format from January 18, 2020, through February 28, 2023.
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identifier 10.5067/IMPACTS/WISPER/DATA101
keyword 
[
  "earth-science-atmospheric-water-vapor-atmosphere-water-vapor-indicators",
  "earth-science-clouds-atmosphere-cloud-droplet-distribution"
]
license https://www.usa.gov/government-works
modified 2026-06-23
programCode 
[
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]
publisher 
{
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spatial 
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temporal 2020-01-18/2023-02-28
theme 
[
  "Earth Science"
]
title Water Isotope System for Precipitation and Entrainment Research (WISPER) IMPACTS

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