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Dataset Title:  GOES 16 Imagery, Band 2, 0.64um, Red - Visible, 2020-present Subscribe RSS
Institution:  DOC/NOAA/NESDIS > U.S. Department of Commerce, NOAA, National Environmental Satellite, Data, and Information Services   (Dataset ID: glerl202002c)
Information:  Summary ? | License ? | Metadata | Background (external link) | Data Access Form
 
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.58092218e+9, 1.59472788e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  y {
    Float32 actual_range 0.111433, 0.125713;
    String axis "Y";
    String ioos_category "Location";
    String long_name "GOES fixed grid projection y-coordinate";
    String standard_name "projection_y_coordinate";
    String units "rad";
  }
  x {
    Float32 actual_range -0.034153, -5.53e-4;
    String axis "X";
    String ioos_category "Location";
    String long_name "GOES fixed grid projection x-coordinate";
    String standard_name "projection_x_coordinate";
    String units "rad";
  }
  Rad {
    Float32 _FillValue 629.146;
    String ancillary_variables "DQF";
    String cell_methods "t: point area: point";
    Float64 colorBarMaximum 800.0;
    Float64 colorBarMinimum -200.0;
    String colorBarPalette "BlackWhite";
    String ioos_category "Optical Properties";
    String long_name "ABI L1b Radiances";
    Byte sensor_band_bit_depth 12;
    String standard_name "toa_outgoing_radiance_per_unit_wavelength";
    String units "W m-2 sr-1 um-1";
    Float32 valid_range -20.28991, 628.98737;
  }
  DQF {
    Int16 _FillValue -1;
    String _Unsigned "true";
    String cell_methods "t: point area: point";
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    String flag_meanings "good_pixel_qf conditionally_usable_pixel_qf out_of_range_pixel_qf no_value_pixel_qf focal_plane_temperature_threshold_exceeded_qf";
    Byte flag_values 0, 1, 2, 3, 4;
    String ioos_category "Quality";
    String long_name "ABI L1b Radiances data quality flags";
    Byte number_of_qf_values 5;
    Float32 percent_conditionally_usable_pixel_qf 0.0;
    Float32 percent_focal_plane_temperature_threshold_exceeded_qf 0.0;
    Float32 percent_good_pixel_qf 0.9999998;
    Float32 percent_no_value_pixel_qf 2.0e-7;
    Float32 percent_out_of_range_pixel_qf 0.0;
    String standard_name "status_flag";
    String units "1";
    Int16 valid_range 0, 4;
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.7, COARDS, ACDD-1.3";
    String creator_email "NESDIS.Data.Access@noaa.gov";
    String creator_name "DOC/NOAA/NESDIS > U.S. Department of Commerce, NOAA, National Environmental Satellite, Data, and Information Services";
    String creator_type "institution";
    String creator_url "https://www.nesdis.noaa.gov/";
    String dataset_name "OR_ABI-L1b-RadC-M6C02_G16_s20201961156221_e20201961158594_c20201961159022.nc";
    String date_created "2020-02-07T19:08:47Z";
    Float64 grid_mapping_inverse_flattening 298.2572221;
    Float64 grid_mapping_latitude_of_projection_origin 0.0;
    String grid_mapping_long_name "GOES-R ABI fixed grid projection";
    Float64 grid_mapping_longitude_of_projection_origin -75.0;
    String grid_mapping_name "geostationary";
    Float64 grid_mapping_perspective_point_height 3.5786023e+7;
    Float64 grid_mapping_semi_major_axis 6378137.0;
    Float64 grid_mapping_semi_minor_axis 6356752.31414;
    String grid_mapping_sweep_angle_axis "x";
    String history 
"Tue Jul 14 12:17:43 2020: /usr/bin/ncks -v Rad,DQF,t,time_bounds,goes_imager_projection,time_bounds,goes_imager_projection,y_image,y_image_bounds,x_image,x_image_bounds,nominal_satellite_subpoint_lat,nominal_satellite_subpoint_lon,nominal_satellite_height,yaw_flip_flag,band_id,band_wavelength,esun,kappa0,planck_fk1,planck_fk2,planck_bc1,planck_bc2,valid_pixel_count,missing_pixel_count,saturated_pixel_count,undersaturated_pixel_count,focal_plane_temperature_threshold_exceeded_count,min_radiance_value_of_valid_pixels,max_radiance_value_of_valid_pixels,mean_radiance_value_of_valid_pixels,std_dev_radiance_value_of_valid_pixels,maximum_focal_plane_temperature,focal_plane_temperature_threshold_increasing,focal_plane_temperature_threshold_decreasing,percent_uncorrectable_L0_errors,earth_sun_distance_anomaly_in_AU,algorithm_dynamic_input_data_container,processing_parm_version_container,algorithm_product_version_container,t_star_look,band_wavelength_star_look,star_id -d x,4800,7200 -d y,180,1200 /home/cw/acq/goes_vis2/output/OR_ABI-L1b-RadC-M6C02_G16_s20201961156221_e20201961158594_c20201961159022.nc -O /home/cw/opr/goes_vis/output/gl_OR_ABI-L1b-RadC-M6C02_G16_s20201961156221_e20201961158594_c20201961159022.nc
2020-07-14T16:25:43Z (local files)
2020-07-14T16:25:43Z http://coastwatch.glerl.noaa.gov/griddap/glerl202002c.das";
    String id "afac1d3a-73c2-4741-8c73-c6eed5d28c12";
    String infoUrl "https://www.nesdis.noaa.gov/";
    String institution "DOC/NOAA/NESDIS > U.S. Department of Commerce, NOAA, National Environmental Satellite, Data, and Information Services";
    String instrument_ID "FM1";
    String instrument_type "GOES R Series Advanced Baseline Imager";
    String iso_series_metadata_id "a70be540-c38b-11e0-962b-0800200c9a66";
    String keywords "abi, commerce, data, department, doc, DQF, Earth Science > Spectral/Engineering > Visible Wavelengths > Visible Radiance, engineering, environmental, flag, flags, information, infrared, l1b, national, nesdis, noaa, optical, optical properties, outgoing, per, properties, quality, Rad, radiance, radiances, satellite, service, services, spectral, spectral/engineering, status, status_flag, toa, toa_outgoing_radiance_per_unit_wavelength, unit, US, visible, wavelength, wavelengths";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Unclassified data.  Access is restricted to approved users only.";
    String LUT_Filenames "SpaceLookParams(FM1A_CDRL79RevP_PR_09_00_02)-637827000.0.h5 QTableBand02(FM1A_CDRL79RevH_DO_07_00_00)-582860861.0.h5 CalTargetTimeIntervals(FM1A_CDRL79RevP_DO_08_00_01)-611906620.0.h5 BandSaturationLimits(FM1A_CDRL79RevH_DO_08_00_00)-600000000.0.h5 SolarSpaceLookParams(FM1A_CDRL79RevH_DO_09_00_00)-600765435.0.h5 DeadRowListParams(FM1A_CDRL79RevH_DO_08_00_00)-600000000.0.h5 Mirror_Record(FM1A_CDRL79RevG_DO_07_00_00)-582860861.0.h5 KalmanAstroConsts(FM1A_CDRL79RevH_DO_08_00_00)-600000000.0.xml KalmanFilterControls(FM1A_CDRL79RevJ_PR_09_02_03)-637828800.0.xml KalmanMeasMaxSensibles(FMAA_INT_ONLY_PR_09_00_02)-637827000.0.xml KalmanPreprocessorControls(FM1A_CDRL79RevJ_DO_07_00_00)-582860861.0.xml KalmanReferenceData(FM1A_CDRL79RevH_DO_08_00_00)-888.0.xml KalmanStarCatalogs(FM1A_CDRL79RevH_DO_08_00_00)-600000000.0.xml ABI_NavigationRDP_Band02(FM1A_CDRL79RevJ_DO_07_00_00)-582860861.0.xml ABI_NavigationParameters_Band02(FM1A_CDRL79RevH_DO_07_00_00)-582860861.0.xml ABI_ResamplingImplementation_Band02(FM1A_CDRL79RevH_DO_07_02_00)-602129336.0.xml ABI_ResamplingParameters_Band02(FM1A_CDRL79RevJ_DO_07_00_00)-582860861.0.xml StarLookParams(FM1A_CDRL79RevH_DO_08_00_00)-600000000.0.h5 StarDetectionParams(FM1A_CDRL79RevJ_DO_07_00_00)-582860861.0.xml ResamplingScaledConversion(FMAA_INT_ONLY_DO_08_00_00)-1111.0.xml BlockReleaseRegions(FMAA_INT_ONLY_DO_08_00_00)-2222.0.csv VNIR_RetrievalParameters(FM1A_CDRL79RevH_DO_08_00_00)-600000000.0.h5 SCT_Record(FM1A_CDRL79RevM_DO_09_00_00)-600765435.0.h5 ICM_ConversionConsts(FM1A_CDRL43-18_PR_09_00_02)-637827000.0.h5 ICM_SensorCoefficients(FM1A_TMABI_18_159_TMABI_18_533_PR_09_00_02)-637827000.0.h5";
    String naming_authority "gov.nesdis.noaa";
    String NCO "4.3.7";
    String orbital_slot "GOES-East";
    String platform_ID "G16";
    String processing_level "National Aeronautics and Space Administration (NASA) L1b";
    String production_data_source "Realtime";
    String production_environment "OE";
    String production_site "WCDAS";
    String project "GOES";
    String scene_id "CONUS";
    String sourceUrl "(local files)";
    String spatial_resolution "0.5km at nadir";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "GOES 16, Single reflective band ABI L1b Radiance Products are digital maps of outgoing radiance values at the top of the atmosphere for visible and near-InfraRed (IR) bands.";
    String time_coverage_end "2020-07-14T11:58:00Z";
    String time_coverage_start "2020-02-05T17:03:00Z";
    String timeline_id "ABI Mode 6";
    String title "GOES 16 Imagery, Band 2, 0.64um, Red - Visible, 2020-present";
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.


 
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