Cloud Radar System (CRS) IMPACTS

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.

Data and Resources

Additional Info

Field	Value
Maintainer	Earthdata Forum
Last Updated	September 15, 2026, 04:33 (UTC)
Created	April 1, 2025, 15:11 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
harvest_object_id	cb4ffe30-7828-47f5-a210-bb02f361116c
harvest_source_id	b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title	Science Discovery Engine
identifier	10.5067/IMPACTS/CRS/DATA101
license	https://www.usa.gov/government-works
modified	2026-09-07T22:16:03Z
programCode	{026:000}
publisher	NASA/MSFC/GHRC
resource-type	Dataset
source_datajson_identifier	true
source_hash	286e750b3a6603493cf24585daee0ffbea853ed76dd8ae257b9a5624c46e7d07
source_schema_version	1.1
spatial	["CARTESIAN", [{"NorthBoundingCoordinate": 48.658, "WestBoundingCoordinate": -95.46, "EastBoundingCoordinate": -64.894, "SouthBoundingCoordinate": 31.073}]]
temporal	2020-01-25/2023-02-28
theme	{"Earth Science"}