netcdf files/g/ds627.0/ei.oper.an.pv/198909/ei.oper.an.pv.regn128sc.1989090200 {
  dimensions:
    lon = 512;
    lat = 256;
    reftime = 1;
    time = 1;
    potential_vorticity_surface = 1;
  variables:
    int GaussianLatLon_Projection;
      :grid_mapping_name = "latitude_longitude";
      :earth_radius = 6367470.0; // double

    float lat(lat=256);
      :units = "degrees_north";
      :gaussian_lats = "true";

    float lon(lon=512);
      :units = "degrees_east";

    double reftime;
      :units = "Hour since 1989-09-02T00:00:00Z";
      :standard_name = "forecast_reference_time";
      :long_name = "GRIB reference time";
      :calendar = "proleptic_gregorian";

    double time(time=1);
      :units = "Hour since 1989-09-02T00:00:00Z";
      :standard_name = "time";
      :long_name = "GRIB forecast or observation time";
      :calendar = "proleptic_gregorian";

    float potential_vorticity_surface(potential_vorticity_surface=1);
      :units = "1.0E-9 K.kg-1.m2.s-1";
      :long_name = "Potential vorticity surface";
      :positive = "down";
      :Grib_level_type = 117; // int

    float Geopotential_potential_vorticity_surface(time=1, potential_vorticity_surface=1, lat=256, lon=512);
      :long_name = "Geopotential @ Potential vorticity surface";
      :units = "m**2 s**-2";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussianLatLon_Projection";
      :coordinates = "reftime time potential_vorticity_surface lat lon ";
      :Grib_Variable_Id = "VAR_98-0-128-129_L117";
      :Grib1_Center = 98; // int
      :Grib1_Subcenter = 0; // int
      :Grib1_TableVersion = 128; // int
      :Grib1_Parameter = 129; // int
      :Grib1_Parameter_Name = "z";
      :Grib1_Level_Type = 117; // int
      :Grib1_Level_Desc = "Potential vorticity surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

    float U_component_of_wind_potential_vorticity_surface(time=1, potential_vorticity_surface=1, lat=256, lon=512);
      :long_name = "U component of wind @ Potential vorticity surface";
      :units = "m s**-1";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussianLatLon_Projection";
      :coordinates = "reftime time potential_vorticity_surface lat lon ";
      :Grib_Variable_Id = "VAR_98-0-128-131_L117";
      :Grib1_Center = 98; // int
      :Grib1_Subcenter = 0; // int
      :Grib1_TableVersion = 128; // int
      :Grib1_Parameter = 131; // int
      :Grib1_Parameter_Name = "u";
      :Grib1_Level_Type = 117; // int
      :Grib1_Level_Desc = "Potential vorticity surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

    float V_component_of_wind_potential_vorticity_surface(time=1, potential_vorticity_surface=1, lat=256, lon=512);
      :long_name = "V component of wind @ Potential vorticity surface";
      :units = "m s**-1";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussianLatLon_Projection";
      :coordinates = "reftime time potential_vorticity_surface lat lon ";
      :Grib_Variable_Id = "VAR_98-0-128-132_L117";
      :Grib1_Center = 98; // int
      :Grib1_Subcenter = 0; // int
      :Grib1_TableVersion = 128; // int
      :Grib1_Parameter = 132; // int
      :Grib1_Parameter_Name = "v";
      :Grib1_Level_Type = 117; // int
      :Grib1_Level_Desc = "Potential vorticity surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

    float Specific_humidity_potential_vorticity_surface(time=1, potential_vorticity_surface=1, lat=256, lon=512);
      :long_name = "Specific humidity @ Potential vorticity surface";
      :units = "kg kg**-1";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussianLatLon_Projection";
      :coordinates = "reftime time potential_vorticity_surface lat lon ";
      :Grib_Variable_Id = "VAR_98-0-128-133_L117";
      :Grib1_Center = 98; // int
      :Grib1_Subcenter = 0; // int
      :Grib1_TableVersion = 128; // int
      :Grib1_Parameter = 133; // int
      :Grib1_Parameter_Name = "q";
      :Grib1_Level_Type = 117; // int
      :Grib1_Level_Desc = "Potential vorticity surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

    float Ozone_mass_mixing_ratio_potential_vorticity_surface(time=1, potential_vorticity_surface=1, lat=256, lon=512);
      :long_name = "Ozone mass mixing ratio @ Potential vorticity surface";
      :units = "kg kg**-1";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussianLatLon_Projection";
      :coordinates = "reftime time potential_vorticity_surface lat lon ";
      :Grib_Variable_Id = "VAR_98-0-128-203_L117";
      :Grib1_Center = 98; // int
      :Grib1_Subcenter = 0; // int
      :Grib1_TableVersion = 128; // int
      :Grib1_Parameter = 203; // int
      :Grib1_Parameter_Name = "o3";
      :Grib1_Level_Type = 117; // int
      :Grib1_Level_Desc = "Potential vorticity surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

    float Potential_temperature_potential_vorticity_surface(time=1, potential_vorticity_surface=1, lat=256, lon=512);
      :long_name = "Potential temperature @ Potential vorticity surface";
      :units = "K";
      :description = "Pressure tendency";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussianLatLon_Projection";
      :coordinates = "reftime time potential_vorticity_surface lat lon ";
      :Grib_Variable_Id = "VAR_98-0-128-3_L117";
      :Grib1_Center = 98; // int
      :Grib1_Subcenter = 0; // int
      :Grib1_TableVersion = 128; // int
      :Grib1_Parameter = 3; // int
      :Grib1_Parameter_Name = "pt";
      :Grib1_Level_Type = 117; // int
      :Grib1_Level_Desc = "Potential vorticity surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

    float Pressure_potential_vorticity_surface(time=1, potential_vorticity_surface=1, lat=256, lon=512);
      :long_name = "Pressure @ Potential vorticity surface";
      :units = "Pa";
      :description = "Precipitable water";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussianLatLon_Projection";
      :coordinates = "reftime time potential_vorticity_surface lat lon ";
      :Grib_Variable_Id = "VAR_98-0-128-54_L117";
      :Grib1_Center = 98; // int
      :Grib1_Subcenter = 0; // int
      :Grib1_TableVersion = 128; // int
      :Grib1_Parameter = 54; // int
      :Grib1_Parameter_Name = "pres";
      :Grib1_Level_Type = 117; // int
      :Grib1_Level_Desc = "Potential vorticity surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

  // global attributes:
  :Originating_or_generating_Center = "European Centre for Medium Range Weather Forecasts (ECMWF) (RSMC)";
  :Originating_or_generating_Subcenter = "0";
  :GRIB_table_version = "0,128";
  :file_format = "GRIB-1";
  :Conventions = "CF-1.6";
  :history = "Read using CDM IOSP GribCollection v3";
  :featureType = "GRID";
}