ERDDAP > tabledap > Data Access Form

Dataset Title:	Wave Data - CODAR SeaSonde - 13MHz - Cape May Point, NJ
Institution:	Center for Ocean Observing and Leadership, Department of Marine & Coastal Sciences, Rutgers University   (Dataset ID: realtime_waves_13mhz_cmpt)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Subset | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum    or a List of Values	Maximum
time (UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2017-09-20T01:00:00Z	2024-12-22T12:30:00Z
wave_height (wave model height in meters, m)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.21	4.98
wave_period (s)	!= =~ <= >= = < >		!= =~ <= >= = < >		3.0	17.0
wave_bearing (degrees)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	360.0
wind_bearing (degrees)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	360.0
maximum_observable_wave_height	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	28.89
cross_spectra_averaged_count	!= =~ <= >= = < >		!= =~ <= >= = < >		8.0	63.0
distance_from_origin	!= =~ <= >= = < >		!= =~ <= >= = < >		NaN
range_cell_result	!= =~ <= >= = < >		!= =~ <= >= = < >		2.0	10.0
doppler_points_used	!= =~ <= >= = < >		!= =~ <= >= = < >		10.0	26.0
wave_method	!= =~ <= >= = < >		!= =~ <= >= = < >		1.0	2.0
vector_flag	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	1282.0
num_valid_source_wave_vectors	!= =~ <= >= = < >		!= =~ <= >= = < >		1.0	63.0
standard_deviation_of_wave_heights	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	3.33
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-74.9614667 -74.9613333 -74.9609
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		38.9311667 38.9312667 38.9313
crs (Coordinate Reference System)	!= =~ <= >= = < >		!= =~ <= >= = < >		NaN
instrument	!= =~ <= >= = < >		!= =~ <= >= = < >		NaN

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" time wave_height wave_period wave_bearing wind_bearing maximum_observable_wave_height cross_spectra_averaged_count distance_from_origin range_cell_result doppler_points_used wave_method vector_flag num_valid_source_wave_vectors standard_deviation_of_wave_heights longitude latitude crs instrument time wave_height wave_period wave_bearing wind_bearing maximum_observable_wave_height cross_spectra_averaged_count distance_from_origin range_cell_result doppler_points_used wave_method vector_flag num_valid_source_wave_vectors standard_deviation_of_wave_heights longitude latitude crs instrument time wave_height wave_period wave_bearing wind_bearing maximum_observable_wave_height cross_spectra_averaged_count distance_from_origin range_cell_result doppler_points_used wave_method vector_flag num_valid_source_wave_vectors standard_deviation_of_wave_heights longitude latitude crs instrument time wave_height wave_period wave_bearing wind_bearing maximum_observable_wave_height cross_spectra_averaged_count distance_from_origin range_cell_result doppler_points_used wave_method vector_flag num_valid_source_wave_vectors standard_deviation_of_wave_heights longitude latitude crs instrument time wave_height wave_period wave_bearing wind_bearing maximum_observable_wave_height cross_spectra_averaged_count distance_from_origin range_cell_result doppler_points_used wave_method vector_flag num_valid_source_wave_vectors standard_deviation_of_wave_heights longitude latitude crs instrument ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriCsv - Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .geoJson - Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. .graph - View a Make A Graph web page. .help - View a web page with a description of tabledap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncCF - Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). .ncCFHeader - View the UTF-8 header (the metadata) for the .ncCF file. .ncCFMA - Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). .ncCFMAHeader - View the UTF-8 header (the metadata) for the .ncCFMA file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). .parquet - Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). .parquetWMeta - Download as a parquet file with detailed metadata. .subset - View an HTML form which uses faceted search to simplify picking subsets of the data. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .kml - View a .kml file, suitable for Google Earth. .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5058692e+9, 1.7348706e+9;
    String axis "T";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "Universal Time Coordinated (UTC) Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  wave_height {
    Float64 _FillValue -999.0;
    Float64 actual_range 0.21, 4.98;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String comment "wave model height in meters for every one of three waves";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Surface Waves";
    String long_name "wave model height in meters";
    String standard_name "sea_surface_wave_significant_height";
    String units "m";
    Float64 valid_max 100.0;
    Float64 valid_min 0.0;
  }
  wave_period {
    Float64 _FillValue -999.0;
    Float64 actual_range 3.0, 17.0;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String comment "wave spectra period in seconds";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Surface Waves";
    String long_name "wave spectra period in seconds";
    String standard_name "sea_surface_wave_mean_period";
    String units "s";
    Float64 valid_max 100.0;
    Float64 valid_min 0.0;
  }
  wave_bearing {
    Float64 _FillValue -999.0;
    Float64 actual_range 0.0, 360.0;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String comment "wave from direction in degrees";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Surface Waves";
    String long_name "wave from direction in degrees";
    String standard_name "sea_surface_wave_from_direction";
    String units "degrees";
    Float64 valid_max 360.0;
    Float64 valid_min 0.0;
  }
  wind_bearing {
    Float64 _FillValue -999.0;
    Float64 actual_range 0.0, 360.0;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String comment "wind from direction in degrees";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String ioos_category "Surface Waves";
    String long_name "wind from direction in degrees";
    String standard_name "sea_surface_wind_wave_from_direction";
    String units "degrees";
    Float64 valid_max 360.0;
    Float64 valid_min 0.0;
  }
  maximum_observable_wave_height {
    Float64 _FillValue -999.0;
    Float64 actual_range 0.0, 28.89;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave Significant Height";
    String standard_name "sea_surface_wave_significant_height";
  }
  cross_spectra_averaged_count {
    Float64 _FillValue -999.0;
    Float64 actual_range 8.0, 63.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Cross Spectra Averaged Count";
  }
  distance_from_origin {
    Float64 _FillValue -999.0;
    String ioos_category "Unknown";
    String long_name "Distance From Origin";
  }
  range_cell_result {
    Float64 _FillValue -999.0;
    Float64 actual_range 2.0, 10.0;
    String ioos_category "Unknown";
    String long_name "Range Cell Result";
  }
  doppler_points_used {
    Float64 _FillValue -999.0;
    Float64 actual_range 10.0, 26.0;
    String ioos_category "Unknown";
    String long_name "Doppler Points Used";
  }
  wave_method {
    Float64 _FillValue -999.0;
    Float64 actual_range 1.0, 2.0;
    String ioos_category "Surface Waves";
    String long_name "Wave Method";
  }
  vector_flag {
    Float64 _FillValue -999.0;
    Float64 actual_range 0.0, 1282.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Vector Flag";
  }
  num_valid_source_wave_vectors {
    Float64 _FillValue -999.0;
    Float64 actual_range 1.0, 63.0;
    String ioos_category "Surface Waves";
    String long_name "Num Valid Source Wave Vectors";
  }
  standard_deviation_of_wave_heights {
    Float64 _FillValue -999.0;
    Float64 actual_range 0.0, 3.33;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Standard Deviation Of Wave Heights";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -999.0;
    Float64 actual_range -74.9614667, -74.9609;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String grid_mapping "crs";
    String ioos_category "Location";
    String long_name "Longitude";
    String short_name "lon";
    String standard_name "longitude";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -999.0;
    Float64 actual_range 38.9311667, 38.9313;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String grid_mapping "crs";
    String ioos_category "Location";
    String long_name "Latitude";
    String short_name "lat";
    String standard_name "latitude";
    String units "degrees_north";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
  }
  crs {
    Float64 _FillValue NaN;
    String comment "http://www.opengis.net/def/crs/EPSG/0/4326";
    String epsg_code "EPSG:4326";
    String grid_mapping_name "latitude_longitude";
    Float64 inverse_flattening 298.257223563;
    String ioos_category "Unknown";
    String long_name "Coordinate Reference System";
    String semi_major_axis "6378137.0";
  }
  instrument {
    Float64 _FillValue NaN;
    String ioos_category "Unknown";
    String long_name "CODAR SeaSonde High Frequency Radar";
    String make_model "CODAR SeaSonde";
    String sensor_type "Direction-finding high frequency radar antenna";
    Float64 serial_number 1;
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.7.4,hdf5=1.10.6";
    String acknowledgement "This data is provided by the Mid-Atlantic Regional Association Coastal Ocean Observing System (MARACOOS). Funding is provided by the U.S. Integration Ocean Observing System (IOOS).";
    String AntennaBearing "205.0";
    String BraggHasSecondOrder "1";
    String BraggSmoothingPoints "2";
    String cdm_data_type "Point";
    String CoastlineSector "90.0, 270.0";
    String comment "Network maintained by MARACOOS. See references attribute";
    String contributor_name "Scott Glenn, Josh Kohut, Hugh Roarty, Ethan Handel, Michael Smith, Laura Nazzaro, Teresa Updyke, Larry Atkinson, Rich Arena, Wendell Brown, Mike Muglia, Harvey Seim";
    String contributor_role "Principal Investigator, Principal Investigator, Principal Investigator, Hardware Maintenance, Data Manager, Data Manager, Hardware Maintenance, Principal Investigator, Hardware Maintenance, Principal Investigator, Hardware Maintenance, Principal Investigator";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_email "michaesm@marine.rutgers.edu";
    String creator_institution "Rutgers University";
    String creator_name "Michael Smith";
    String creator_type "person";
    String creator_url "rucool.marine.rutgers.edu";
    String CTF "1.00";
    String CurrentVelocityLimit "200";
    String date_created "2020-12-21T20:34:57Z";
    String date_issued "2020-12-21T20:34:57Z";
    String date_metadata_modified "2020-12-21T20:34:57Z";
    String date_modified "2020-12-21T20:34:57Z";
    String DopplerCells "512";
    Float64 Easternmost_Easting -74.9609;
    String featureType "Point";
    String FileType "WVMD WVM9 \"Wave History\"";
    Float64 geospatial_lat_max 38.9313;
    Float64 geospatial_lat_min 38.9311667;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -74.9609;
    Float64 geospatial_lon_min -74.9614667;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_positive "down";
    String grid_mapping_comment "http://www.opengis.net/def/crs/EPSG/0/4326";
    String grid_mapping_epsg_code "EPSG:4326";
    Float64 grid_mapping_inverse_flattening 298.257223563;
    String grid_mapping_long_name "Coordinate Reference System";
    String grid_mapping_name "latitude_longitude";
    String grid_mapping_semi_major_axis "6378137.0";
    String history 
"Half-hourly codar wave data from one site into one daily file containing wave heights.
2024-12-22T15:07:40Z (local files)
2024-12-22T15:07:40Z http://hfr.marine.rutgers.edu/erddap/tabledap/realtime_waves_13mhz_cmpt.html";
    String infoUrl "https://maracoos.org/node/146";
    String institution "Center for Ocean Observing and Leadership, Department of Marine & Coastal Sciences, Rutgers University";
    String instrument "CODAR SeaSonde High Frequency Radar";
    String keywords "13mhz, advisories, applications, association, atlantic, averaged, cape, cell, center, circulation, coastal, codar, coordinate, coordinated, count, cross, cross_spectra_averaged_count, crs, data, degrees, department, deviation, direction, distance, distance_from_origin, doppler, doppler_points_used, dynamics, earth, Earth Science > Oceans > Coastal Processes, Earth Science > Oceans > Ocean Circulation, Earth Science > Oceans > Ocean Tides, Earth Science > Oceans > Ocean Waves, Earth Science > Oceans > Ocean Waves > Significant Wave Height, Earth Science > Oceans > Ocean Waves > Wave Speed/Direction, Earth Science > Oceans > Ocean Winds, Earth Science > Spectral/Engineering > Radar, engineering, environmental, Environmental Advisories > Marine Advisories > Marine Weather/Forecast, flag, forecast, frequency, height, heights, high, instrument, latitude, leadership, longitude, maracoos, marine, maximum_observable_wave_height, mean, meters, method, mid, mid-atlantic, model, num, num_valid_source_wave_vectors, observing, ocean, oceans, origin, period, point, points, processes, quality, radar, range, range_cell_result, reference, regional, result, rutgers, science, sciences, sea, sea_surface_wave_from_direction, sea_surface_wave_mean_period, sea_surface_wave_significant_height, sea_surface_wind_wave_from_direction, seasonde, seconds, significant, source, spectra, spectral, spectral/engineering, speed, standard, standard_deviation_of_wave_heights, statistics, surface, surface waves, system, tides, time, universal, university, used, valid, vector, vector_flag, vectors, wave, wave_bearing, wave_height, wave_method, wave_period, waves, weather, weather/forecast, wind, wind_bearing, winds";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String Manufacturer "CODAR Ocean Sensors. SeaSonde";
    String MaximumWavePeriod "17.0";
    String naming_authority "edu.rutgers.marine.rucool";
    Float64 Northernmost_Northing 38.9313;
    String Origin "38.9312667  -74.9613333";
    String platform "MARACOOS HF Radar 5MHz Network";
    String processing_level "Level 2";
    String project "Mid-Atlantic Regional Association Coastal Ocean Observing System - High Frequency Radar Sea Surface Current Mapping";
    String publisher_email "michaesm@marine.rutgers.edu";
    String publisher_name "Center for Ocean Observing and Leadership, Department of Marine & Coastal Sciences, Rutgers University";
    String publisher_type "group";
    String publisher_url "rucool.marine.rutgers.edu";
    String RangeCells "31";
    String references "https://maracoos.org/node/146 https://rucool.marine.rutgers.edu/facilities https://rucool.marine.rutgers.edu/data";
    String sea_name "Mid-Atlantic Bight";
    String Site "CMPT";
    String source "CODAR SeaSonde Surface Current Mapping Device";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 38.9311667;
    String standard_name_vocabulary "CF Standard Name Table v41";
    String subsetVariables "distance_from_origin, longitude, latitude, crs, instrument";
    String summary "Mid-Atlantic Regional Association Coastal Ocean Observing System (MARACOOS) Wave Heights. Ocean Wave Heights. Center for Ocean Observing and Leadership, Department of Marine & Coastal Sciences, Rutgers University data from a local source.";
    String time_coverage_end "2024-12-22T12:30:00Z";
    String time_coverage_start "2017-09-20T01:00:00Z";
    String TimeCoverage "0.250";
    String TimeStamp "2024-12-01 00:00:00";
    String TimeZone "UTC";
    String title "Wave Data - CODAR SeaSonde - 13MHz - Cape May Point, NJ";
    String TransmitBandwidthKHz "-49.629688";
    String TransmitCenterFreqMHz "13.475000";
    String TransmitSweepRateHz "2.000000";
    String WaveBearingLimits "330.0, 230.0";
    String WaveBraggNoiseThreshold "3.2";
    String WaveBraggPeakDropOff "100.0";
    String WaveBraggPeakNull "10.0";
    String WaveMergeMethod "1";
    String WaveMinDopplerPoints "10";
    String WaveUseInnerBragg "0";
    Float64 Westernmost_Easting -74.9614667;
  }
}

 

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Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP Data Access Protocol (DAP) and its selection constraints.

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.

• (easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
• (easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
• (not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.

 

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