netcdf GOESNG-0750L1B/2025/2025_04_24/Emultic500mNC4_goes19_202504241340.nc {
  dimensions:
    nx500m = 21696;
    ny500m = 21696;
    nx4km = 2712;
    ny4km = 2712;
    numerical_count = 65536;
  variables:
    short VIS_006(ny500m=21696, nx500m=21696);
      :_FillValue = -32768S; // short
      :standard_name = "toa_bidirectional_reflectance";
      :long_name = "0.6 microns VIS channel GOES19 ABI";
      :units = "1";
      :scale_factor = 0.01; // double
      :add_offset = 0.0; // double
      :valid_min = -32767S; // short
      :valid_max = 32767S; // short
      :available = "yes";
      :comment = "channel 2";
      :_CoordinateSystems = "GeosCoordinateSystem500m";
      :grid_mapping = "GeosCoordinateSystem500m";
      :resolution = 0.5; // double
      :bandfactor = 516.3266118449488; // double
      :Offset_:_radiance_=_offset_+_CN_x_slope = -20.2899112701416; // double
      :Slope_:_radiance_=_offset_+_CN_x_slope = 0.1585923731327057; // double
      :_ChunkSizes = 339U, 339U; // uint

    short Albedo_to_Native_count_VIS_006(numerical_count=65536);
      :_FillValue = -9999S; // short
      :comment = "correspondance between coded albedo and goes count. x between -32768 and 32767 cents of albedo. y between 0 and 4095.";
      :units = "";
      :_ChunkSizes = 65536U; // uint

    char commentaires;
      :nuc = "pour conversion radiances vers tempe.";
      :alpha = "pour conversion radiances vers tempe.";
      :beta = "pour conversion radiances vers tempe.";
      :slope = "Pour passer des comptes numeriques aux radiances";
      :offset = "Pour passer des comptes numeriques aux radiances";
      :bandfactor = "pour conversion radiances vers albedo";
      :xx_to_native_count = "Pour passer des temperatures ou albedos vers les comptes natifs et reappliquer une autre calibration";

    char satellite;
      :id = "goes19";
      :lat = 0.0; // double
      :lon = -75.19999694824219; // double
      :dst = 3.57860234375E7; // double

    char geos;
      :grid_mapping_name = "geostationary";
      :_CoordinateTransformType = "Projection";
      :latitude_of_projection_origin = 0.0; // double
      :longitude_of_projection_origin = -75.0; // double
      :perspective_point_height = 3.5786023E7; // double
      :false_easting = 0.0; // double
      :false_northing = 0.0; // double
      :grid_north_pole_latitude = 90.0; // double
      :grid_north_pole_longitude = 0.0; // double
      :inverse_flattening = 298.257222101; // double
      :longitude_of_central_meridian = -75.19999694824219; // double
      :longitude_of_prime_meridian = 0.0; // double
      :north_pole_grid_latitude = 90.0; // double
      :scale_factor_at_central_meridian = 1.0; // double
      :scale_factor_at_projection_origin = 1.0; // double
      :semi_major_axis = 6378137.0; // double
      :semi_minor_axis = 6356752.31414; // double
      :standard_parallel = 0.0; // double
      :straight_vertical_longitude_from_pole = -75.19999694824219; // double
      :height_above_earth = 3.5786023E7; // double
      :_CoordinateAxisTypes = "Y500m X500m";
      :sweep_angle_axis = "x";

    char GeosCoordinateSystem500m;
      :spatial_ref = "PROJCS[\"unnamed\",GEOGCS[\"GRS 1980(IUGG, 1980)\",DATUM[\"unknown\",SPHEROID[\"GRS80\",6378137,298.257222101]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433]],PROJECTION[\"Geostationary_Satellite\"],PARAMETER[\"central_meridian\",-75.000000],PARAMETER[\"satellite_height\",35786023.000000],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],EXTENSION[\"PROJ4\",\"+proj=geos +lon_0=-75.0 +h=35786023 +x_0=0 +y_0=0 +ellps=GRS80 +units=m +no_defs +sweep=x\"],UNIT["meter",1]]";
      :_CoordinateAxes = "Y500m X500m";
      :_CoordinateTransforms = "geos";
      :GeoTransform = "-5434894.885056, 501.004322, 0, 5434894.885056, 0, -501.004322";

    char GeosCoordinateSystem4km;
      :spatial_ref = "PROJCS[\"unnamed\",GEOGCS[\"GRS 1980(IUGG, 1980)\",DATUM[\"unknown\",SPHEROID[\"GRS80\",6378137,298.257222101]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433]],PROJECTION[\"Geostationary_Satellite\"],PARAMETER[\"central_meridian\",-75.000000],PARAMETER[\"satellite_height\",35786023.000000],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],EXTENSION[\"PROJ4\",\"+proj=geos +lon_0=-75.0 +h=35786023 +x_0=0 +y_0=0 +ellps=GRS80 +units=m +no_defs +sweep=x\"],UNIT["meter",1]]";
      :_CoordinateAxes = "Y4km X4km";
      :_CoordinateTransforms = "geos";
      :GeoTransform = "-5434894.885056, 4008.034576, 0, 5434894.885056, 0, -4008.034576";

    float X500m(nx500m=21696);
      :standard_name = "projection_x_coordinate";
      :units = "m";
      :_CoordinateAxisType = "GeoX";
      :_ChunkSizes = 339U; // uint

    float Y500m(ny500m=21696);
      :standard_name = "projection_y_coordinate";
      :units = "m";
      :_CoordinateAxisType = "GeoY";
      :_ChunkSizes = 339U; // uint

    float X4km(nx4km=2712);
      :standard_name = "projection_x_coordinate";
      :units = "m";
      :_CoordinateAxisType = "GeoX";
      :_ChunkSizes = 2712U; // uint

    float Y4km(ny4km=2712);
      :standard_name = "projection_y_coordinate";
      :units = "m";
      :_CoordinateAxisType = "GeoY";
      :_ChunkSizes = 2712U; // uint

    char ImageNavigation500m;
      :CFAC = 8.17013587670174E7; // double
      :LFAC = 8.17013587670174E7; // double
      :COFF = 10848.5; // double
      :LOFF = 10848.5; // double

    char ImageNavigation4km;
      :CFAC = 1.0212669845877174E7; // double
      :LFAC = 1.0212669845877174E7; // double
      :COFF = 1356.5; // double
      :LOFF = 1356.5; // double

    double time;
      :_FillValue = -9999.0; // double
      :standard_name = "time";
      :long_name = "reference time";
      :units = "seconds since 1970-01-01 00:00:00";
      :Ascii_hour_of_time_reference = "2025-04-24T13:40:00";
      :comment = "Unix hour for the time reference of the file";

    short dtime(ny4km=2712, nx4km=2712);
      :_FillValue = -9999S; // short
      :standard_name = "time offset from reference time";
      :long_name = "time offset";
      :units = "seconds";
      :comment = "time scan = time + dtime";
      :_CoordinateSystems = "GeosCoordinateSystem4km";
      :grid_mapping = "GeosCoordinateSystem4km";
      :resolution = 4.0; // double
      :_ChunkSizes = 2712U, 2712U; // uint

  // global attributes:
  :Area_of_acquisition = "globe";
  :cdm_data_type = "NetCDF";
  :comment = "ABI Radiances";
  :Conventions = "CF-1.7";
  :converted_by = "ABI writer 1.0";
  :created_by = "DirOP/CMS/LOG";
  :creator_email = "dp_cms_alllog@meteo.fr";
  :creator_name = "CMS-Lannion";
  :creator_url = "http://www.meteo-spatiale.fr";
  :date_created = "2025-04-24 13:50:24";
  :Exploration_mode = 0U; // uint
  :geospatial_lat_max = 81.3282f; // float
  :geospatial_lat_min = -81.3282f; // float
  :geospatial_lon_max = 6.2995f; // float
  :geospatial_lon_min = -156.2995f; // float
  :history = "Created on 2025-04-24 13:50:24 by CMS-Lannion";
  :id = "20250424_13502400-0";
  :institution = "Meteo-France - Centre de Meteorologie Spatiale";
  :iospInformation = "";
  :keywords = "goes19 imager abi radiance";
  :keywords_vocabulary = "";
  :license = "(C)METEO-FRANCE";
  :List_of_acquisition's_areas = "globe";
  :Metadata_Conventions = "Unidata Dataset Discovery v1.0";
  :naming_authority = "CMS-Lannion";
  :Netcdf-java_Information = "4.3";
  :ncml_version = "1.2";
  :Rate_of_valid_data = "78";
  :references = "http://www.goes-r.gov/users/docs/PUG-L1b-vol3.pdf";
  :satid = 270U; // uint
  :Scanning_direction = "north to south";
  :source = "GOES19 ABI from direct read out";
  :summary = "GOES19 ABI imager";
  :time_coverage_start = "2025-04-24T13:40:21.3Z";
  :time_coverage_end = "2025-04-24T13:49:52.1Z";
  :time_coverage_duration = "PT00H09M30S";
  :time_coverage_resolution = "PT01S";
}