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Description
NEXRAD Level II weather radar data were collected at 31 sites from January 1 to March 1, 2020, as part of the IMPACTS field campaign studying Atlantic Coast snowstorms. The dataset contains meteorological and dual-polarization base data quantities, including radar reflectivity, radial velocity, and differential reflectivity. Its primary aim is to improve the understanding of snowband formation, microphysics, and remote sensing for snowfall prediction.
Use Cases
Analyzing snowband formation and evolution based on time-series radar reflectivity and velocity data.
Studying snow particle microphysics and growth mechanisms using dual-polarization variables like differential reflectivity.
Improving snowfall remote sensing interpretation and numerical weather prediction models with high-resolution radar observations.
Validating satellite-based precipitation products against ground-based NEXRAD Level II measurements.
Strengths
Data originates from a coordinated, three-year NASA field campaign (IMPACTS) with specific scientific objectives.
Includes observations from 31 NEXRAD sites, providing multi-site geospatial coverage for event analysis.
Contains dual-polarization radar variables, which offer detailed information on precipitation type and microphysics.
Limitations
Key metadata such as row count, file size, and specific license terms are not provided across platforms.
There is a conflict in the 'last updated' date between sources (2020-03-01 vs. 2026-04-10), creating uncertainty about data currency.
The dataset description is repeated verbatim across platforms, suggesting potential metadata synchronization issues.
Provenance
Source
National Aeronautics and Space Administration (NASA)
Collection Method
Collected via Next Generation Weather Radar (NEXRAD) Level II surveillance systems at 31 operational sites.
Time Range
January 1, 2020 to March 1, 2020
Freshness
2026-04-10 01:59:40.321170 (from datagov, but conflicts with earlier date from nasa_earthdata)
Geography
United States Atlantic Coast, from 31 NEXRAD site locations
License is listed as 'other-license-specified' but the specific terms are not detailed. The dataset is noted to be updated in subsequent years of the IMPACTS campaign.