ERDDAP > tabledap > Data Access Form

Dataset Title:	CVOW Wave Buoy, Timeseries Data
Institution:	Virginia Electric and Power Company, d/b/a Dominion Energy Virginia   (Dataset ID: CVOW_temp_wave)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
time (UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2025-04-11T11:24:18Z	2025-09-06T08:17:44Z
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		36.886063	36.939148
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-75.4646	-75.41887
station (Station CVOW Wave Buoy)	!= =~ <= >= = < >		!= =~ <= >= = < >		"CVOW Wave Rider 1"	"CVOW Wave Rider 1"
WATER_CURRENT_MEAN_DIRECTION (degree)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	359.8242
WATER_CURRENT_MEAN_SPEED (m s-1)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	0.823
WATER_TEMPERATURE (degree_Celsius)	!= =~ <= >= = < >		!= =~ <= >= = < >		17.14	31.15
WAVE_MEAN_DIRECTION (mean wave direction, degrees)	!= =~ <= >= = < >		!= =~ <= >= = < >		3.78	357.1
WAVE_PEAK_PERIOD (peak period, seconds)	!= =~ <= >= = < >		!= =~ <= >= = < >		2.67	16.67
WAVE_PERIOD (mean wave period, seconds)	!= =~ <= >= = < >		!= =~ <= >= = < >		2.47	9.26
WAVE_SIGNIFICANT_HEIGHT (m)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.29	5.29

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" time latitude longitude station WATER_CURRENT_MEAN_DIRECTION WATER_CURRENT_MEAN_SPEED WATER_TEMPERATURE WAVE_MEAN_DIRECTION WAVE_PEAK_PERIOD WAVE_PERIOD WAVE_SIGNIFICANT_HEIGHT time latitude longitude station WATER_CURRENT_MEAN_DIRECTION WATER_CURRENT_MEAN_SPEED WATER_TEMPERATURE WAVE_MEAN_DIRECTION WAVE_PEAK_PERIOD WAVE_PERIOD WAVE_SIGNIFICANT_HEIGHT time latitude longitude station WATER_CURRENT_MEAN_DIRECTION WATER_CURRENT_MEAN_SPEED WATER_TEMPERATURE WAVE_MEAN_DIRECTION WAVE_PEAK_PERIOD WAVE_PERIOD WAVE_SIGNIFICANT_HEIGHT time latitude longitude station WATER_CURRENT_MEAN_DIRECTION WATER_CURRENT_MEAN_SPEED WATER_TEMPERATURE WAVE_MEAN_DIRECTION WAVE_PEAK_PERIOD WAVE_PERIOD WAVE_SIGNIFICANT_HEIGHT time latitude longitude station WATER_CURRENT_MEAN_DIRECTION WATER_CURRENT_MEAN_SPEED WATER_TEMPERATURE WAVE_MEAN_DIRECTION WAVE_PEAK_PERIOD WAVE_PERIOD WAVE_SIGNIFICANT_HEIGHT ")

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

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.744370658e+9, 1.757146664e+9;
    String axis "T";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "Time";
    String short_name "time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 _FillValue NaN;
    Float32 actual_range 36.886063, 36.939148;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 _FillValue NaN;
    Float32 actual_range -75.4646, -75.41887;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  station {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station CVOW Wave Buoy";
  }
  WATER_CURRENT_MEAN_DIRECTION {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 359.8242;
    String coordinates "latitude longitude station";
    String ioos_category "currents";
    String long_name "Current direction at water surface";
    String standard_name "sea_water_velocity_to_direction";
    String units "degree";
  }
  WATER_CURRENT_MEAN_SPEED {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 0.823;
    String coordinates "latitude longitude station";
    String ioos_category "currents";
    String long_name "Current speed";
    String standard_name "sea_water_speed";
    String units "m s-1";
  }
  WATER_TEMPERATURE {
    Float32 _FillValue NaN;
    Float32 actual_range 17.14, 31.15;
    String coordinates "latitude longitude station";
    String ioos_category "Water Property";
    String long_name "Sea Water Temperature";
    String standard_name "sea_water_temperature";
    String units "degree_Celsius";
  }
  WAVE_MEAN_DIRECTION {
    Float32 _FillValue NaN;
    Float32 actual_range 3.78, 357.1;
    String coordinates "latitude longitude station";
    String ioos_category "Surface Waves";
    String long_name "mean wave direction";
    String standard_name "sea_surface_wave_mean_from_direction";
    String units "degrees";
  }
  WAVE_PEAK_PERIOD {
    Float32 _FillValue NaN;
    Float32 actual_range 2.67, 16.67;
    String coordinates "latitude longitude station";
    String ioos_category "Surface Waves";
    String long_name "peak period";
    String standard_name "sea_surface_wave_period_at_variance_spectral_density_maximum";
    String units "seconds";
  }
  WAVE_PERIOD {
    Float32 _FillValue NaN;
    Float32 actual_range 2.47, 9.26;
    String coordinates "latitude longitude station";
    String ioos_category "Surface Waves";
    String long_name "mean wave period";
    String standard_name "sea_surface_wave_mean_period";
    String units "seconds";
  }
  WAVE_SIGNIFICANT_HEIGHT {
    Float32 _FillValue NaN;
    Float32 actual_range 0.29, 5.29;
    String coordinates "latitude longitude station";
    String ioos_category "Surface Waves";
    String long_name "significant wave height";
    String standard_name "sea_surface_wave_significant_height";
    String units "m";
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.9.2,hdf5=1.14.6";
    String acknowledgement "This dataset is part of a MetOcean Cyberinfrastructure supported by the Integrated Ocean Observing System (IOOS) to streamline integration of data from offshore operations.";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station,longitude,latitude";
    String comment "CVOW Wave Rider Buoy deployed by DEME Offshore US";
    String contributor_address "150 Boush St, Norfolk, Suite 1000, VA 23510";
    String contributor_email "de.beuf.hendrik at deme-group.com";
    String contributor_name "DEME Offshore US";
    String contributor_url "www.deme-group.com";
    String creator_address "500 Orapax Street, Norfolk, VA 23507";
    String creator_country "USA";
    String creator_email "cvowops@dominionenergy.com";
    String creator_name "Coastal Virginia Offshore Wind";
    String creator_sector "industry";
    String creator_state "Virginia";
    String creator_URL "https://coastalvawind.com/";
    Float64 Easternmost_Easting -75.41887;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 36.93915;
    Float64 geospatial_lat_min 36.88606;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -75.41887;
    Float64 geospatial_lon_min -75.4646;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-09-06T15:54:04Z (local files)
2025-09-06T15:54:04Z http://data.neracoos.org/erddap/tabledap/CVOW_temp_wave.html";
    String id "CVOW_WR1";
    String infoUrl "https://coastalvawind.com/";
    String institution "Virginia Electric and Power Company, d/b/a Dominion Energy Virginia";
    String Instrument "Datawell DWR4 (https://datawell.nl/products/directional-waverider-4/)";
    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, Dominion, 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.";
    Float64 Northernmost_Northing 36.93915;
    String platform_name "CVOW_WR1";
    String processing_level "raw dataset, no qc provided";
    String project "Coastal Virginia Offshore Wind";
    String publisher_country "USA";
    String publisher_email "devops at rpsgroup.com, info at neracoos.org";
    String publisher_institution "MARACOOS, NERACOOS";
    String publisher_name "MARACOOS, NERACOOS";
    String publisher_phone "(401) 789-6224, (603) 319-1785";
    String publisher_type "institution";
    String publisher_url "https://www.maracoos.org, https://www.neracoos.org";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 36.88606;
    String summary "This dataset contains observations to support further understanding of metocean conditions off the coast of Virginia. Data is collected from a wave rider buoy and the dataset includes  measurements of wave peak height, wave significant height,  wave peak direction, and wave significant period.";
    String time_coverage_end "2025-09-06T08:17:44Z";
    String time_coverage_start "2025-04-11T11:24:18Z";
    String title "CVOW Wave Buoy, Timeseries Data";
    Float64 Westernmost_Easting -75.4646;
  }
}

 

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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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