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

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.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated September 15, 2026, 03:18 (UTC)
Created April 1, 2025, 15:39 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 4b84b7ca-d6d3-44f6-95bc-ff4cb7dff0ba
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.5067/IMPACTS/EXRAD/DATA101
license https://www.usa.gov/government-works
modified 2026-09-07T22:16:02Z
programCode {026:000}
publisher NASA/MSFC/GHRC
resource-type Dataset
source_datajson_identifier true
source_hash a55ddd59b0b298f7480ad7a116c654ff7f33c25d5d69d6dff899d954ef7ce442
source_schema_version 1.1
spatial ["CARTESIAN", [{"NorthBoundingCoordinate": 48.658, "WestBoundingCoordinate": -117.635, "EastBoundingCoordinate": -67.286, "SouthBoundingCoordinate": 27.106}]]
temporal 2020-01-25/2023-03-02
theme {"Earth Science"}