netcdf files/d841001/201304/nexrad_3d_v4_2_20130429T230000Z.nc {
  dimensions:
    Longitude = 2832;
    Latitude = 1248;
    Altitude = 28;
    Index = 4009235;
    SweepRef = 29;
    Sweep = 1677;
    time = 1;
  variables:
    double Longitude(Longitude=2832);
      :long_name = "Longitude";
      :description = "Longitudes of grid box centers";
      :delta = 0.02083333333333333; // double
      :units = "degrees_east";
      :class = "DIMENSION_SCALE";

    double Latitude(Latitude=1248);
      :long_name = "Latitude";
      :description = "Latitudes of grid box centers";
      :delta = 0.02083333333333333; // double
      :units = "degrees_north";
      :class = "DIMENSION_SCALE";

    double Altitude(Altitude=28);
      :long_name = "Geometric altitude with respect to geoid";
      :units = "km";
      :description = "Altitudes of grid box centers";
      :delta = 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0; // double
      :positive = "up";
      :class = "DIMENSION_SCALE";

    char sweeps_merged(Sweep=1677, SweepRef=29);
      :long_name = "Information about azimuth scans used in analysis (station ID, date and time, elevation angle)";

    byte Nradobs(Altitude=28, Latitude=1248, Longitude=2832);
      :long_name = "Number of radar azimuth scans (elevation angles) observing grid box";
      :units = "counts";
      :_ChunkSizes = 7U, 416U, 944U; // uint

    byte Nradecho(Altitude=28, Latitude=1248, Longitude=2832);
      :long_name = "Number of radar azimuth scans (elevation angles) with echo in grid box";
      :units = "counts";
      :_ChunkSizes = 7U, 416U, 944U; // uint

    int index(Index=4009235);
      :long_name = "Grid box subscripts";
      :description = "1-D subscripts of grid boxes containing valid radar observations";
      :_ChunkSizes = 1002309U; // uint

    float Reflectivity(Index=4009235);
      :long_name = "Radar Reflectivity";
      :units = "dBZ";
      :missing_value = NaNf; // float
      :_ChunkSizes = 1002309U; // uint

    float wReflectivity(Index=4009235);
      :long_name = "Reflectivity Bin Weights";
      :units = "dimensionless";
      :missing_value = 0.0f; // float
      :_ChunkSizes = 1002309U; // uint

    float SpectrumWidth(Index=4009235);
      :long_name = "Velocity Spectrum Width";
      :units = "m s^-1";
      :missing_value = NaNf; // float
      :_ChunkSizes = 1002309U; // uint

    float wSpectrumWidth(Index=4009235);
      :long_name = "Velocity Spectrum Width Bin Weights";
      :units = "dimensionless";
      :missing_value = 0.0f; // float
      :_ChunkSizes = 1002309U; // uint

    int datehour(time=1);
      :units = "1";
      :long_name = "year, month, day, hour";

    double time(time=1);
      :calendar = "gregorian";
      :units = "hours since 1900-01-01 00:00:00";
      :long_name = "time";
      :_FillValue = 9.969209968386869E36; // double
      :class = "DIMENSION_SCALE";

  // global attributes:
  :Name = "GridRad";
  :Description = "Three-dimensional gridded NEXRAD radar reflectivity data";
  :Analysis_time = "2013-04-29 23:00:00Z";
  :Analysis_time_window = "all azimuth scans (elevation angles) with central times within +/- 3.8 minutes of analysis time";
  :Algorithm_version = "v4_2";
  :Algorithm_description = "Space and time binning weighted by distances from contributing radars";
  :Processing_Software = "The intermediate NetCDF volume scan files were created using: Weather and Climate Toolit: Current Version = 4.3.1";
  :NOAA_toolkit_root = "/scratch/user/kwchang30/wct/wct-4.3.1/";
  :File_creation_date = "2021-03-05 02:00:32Z";
  :Grid_scheme = "uniform longitude-latitude grid, non-uniform altitude grid";
  :Storage_scheme = "netCDF-4, sparse";
  :Data_source = "Amazon Web Services";
  :Data_source_URL = "https://www.ncdc.noaa.gov/data-access/radar-data/nexrad";
  :Authors = "Kenneth P. Bowman, Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77843-3150, k-bowman@tamu.edu; Cameron R. Homeyer, School of Meteorology, University of Oklahoma, Norman, OK 73072-7307, chomeyer@ou.edu";
  :Project_sponsor = "National Aeronautics and Space Administration, Earth Ventures Suborbital-3 Program";
  :Project_name = "80NSSC19K0341 and 80NSSC19K0347; Dynamics and Chemistry of the Summer Stratosphere (DCOTSS; https://dcotss.org)";
}