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GridRad - Three-Dimensional Gridded NEXRAD WSR-88D Radar Data

| DOI: 10.5065/D6NK3CR7

The GridRad data set consists of radar reflectivity data and radar coverage information from 125 U.S. NEXRAD WSR-88D radars merged onto a regular, three-dimensional, longitude-latitude-altitude grid at hourly analysis intervals. Each analysis uses all available radar azimuth scans within a specified time window centered on the analysis time. The size of the time window is given in the files as a global attribute. The data include weighted average radar reflectivity from multiple observations, averaging weights, number of azimuth scans (elevation angles) observing each volume, and the number of azimuth scans (elevation angles) with echo in each volume.

Following conventional nomenclature, the NEXRAD volume scan files are referred to as Level 2 data, while this gridded data are referred to as Level 3 data.

Additional information is available at

Temporal Range:
1995-01-01 00:00 +0000 to 2017-12-31 23:00 +0000 (Entire dataset) Period details by dataset product
Radar Reflectivity
Vertical Levels:
See the detailed metadata for level information.
Data Types:
Spatial Coverage:
Longitude Range: Westernmost=115W Easternmost=69W
Latitude Range: Southernmost=25N Northernmost=49N Detailed coverage information
Data Contributors:
School of Meteorology, University of Oklahoma
Department of Atmospheric Sciences, Texas A&M University
Cooney, John W., Kenneth P. Bowman, and Cameron R. Homeyer, 2017: Ten-Year Analysis of Tropopause-Overshooting Convection using NEXRAD Radar Observations J.G.R., Submitted.

Solomon, D. L., K. P. Bowman, and C. R. Homeyer, 2016: Tropopause-Penetrating Convection from Three-Dimensional Gridded NEXRAD Data J. Appl. Meteor. and Climatol., 55, 465-478 (DOI: 10.1175/JAMC-D-15-0190.1).

Total Volume:
4.65 TB (Entire dataset) Volume details by dataset product
Data Formats:
More Details:
View a more detailed summary of the data, including specific date ranges and locations by parameter
Metadata Record:
Data License:
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