Data Access Form

Dataset Title:	FORCE Acoustic Doppler Current Profiler (ADCP): Waves
Institution:	FORCE (Dataset ID: FORCE_Mar2018_ADCP_Waves)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

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Variable	Minimum	Maximum
sea_water_pressure (dbar)	0.5526367	44.52364
time (UTC)	2018-03-30T20:02:33Z	2018-05-24T16:02:30Z

latitude (degrees_north)	45.3631	45.3631

longitude (degrees_east)	-64.4275	-64.4275

sea_surface_wave_maximum_period (s)	1.010101	38.91119
sea_surface_wave_significant_height (m)	0.0	3.421683

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  sea_water_pressure {
    Float32 _FillValue -9.0;
    Float32 actual_range 0.5526367, 44.52364;
    Float64 colorBarMaximum 5000.0;
    Float64 colorBarMinimum 0.0;
    String description "Mean pressure / distance during burst";
    String force_name "Pressure";
    String ioos_category "Pressure";
    String long_name "Sea Water Pressure";
    String standard_name "sea_water_pressure";
    String units "dbar";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.522440153001e+9, 1.5271777500008e+9;
    String axis "T";
    String calendar "gregorian";
    String description "Time of measurement";
    String force_name "time";
    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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 45.3631, 45.3631;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -64.4275, -64.4275;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sea_surface_wave_maximum_period {
    Float32 _FillValue -9.0;
    Float32 actual_range 1.010101, 38.91119;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String description "Periods for Tm02: Spectrum mean wave; Tp: Peak wave; Tz: Mean zero-crossing; T3: Mean 1/3; T10:";
    String force_name "Period_Tp";
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave Maximum Period";
    String standard_name "sea_surface_wave_maximum_period";
    String units "s";
  }
  sea_surface_wave_significant_height {
    Float32 _FillValue -9.0;
    Float32 actual_range 0.0, 3.421683;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String description "Hm0: Significant height; H3: AST mean height of the 33% largest waves; H10: AST mean height of";
    String force_name "Height_Hm0";
    String ioos_category "Surface Waves";
    String long_name "Sea Surface Wave Significant Height";
    String standard_name "sea_surface_wave_significant_height";
    String units "m";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String contributor_name "Dr. Joel Culina";
    String contributor_role "custodian";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "joel.culina@fundyforce.ca";
    String creator_name "Dr. Joel Culina";
    String creator_type "person";
    String creator_url "https://fundyforce.ca";
    String date_created "2018-03-30";
    Float64 Easternmost_Easting -64.4275;
    Float64 geospatial_lat_max 45.3631;
    Float64 geospatial_lat_min 45.3631;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -64.4275;
    Float64 geospatial_lon_min -64.4275;
    String geospatial_lon_units "degrees_east";
    String history 
"From CIOOS Atlantic atlantic-data-transform repository, ran /opt/provisioning/data-transform/atlantic-data-transform/force/adcp/convert_force_nc.py on 2022-01-13
2025-10-27T10:41:56Z (local files)
2025-10-27T10:41:56Z https://cioosatlantic.ca/erddap/tabledap/FORCE_Mar2018_ADCP_Waves.html";
    String infoUrl "https://fundyforce.ca";
    String institution "FORCE";
    String instrument "100258";
    String keywords "3d velocity profile, acoustic, adcp, center, current, currents, data, doppler, earth, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Waves > Significant Wave Height, energy, force, fundy, height, maximum, ocean, oceans, oceansound, period, pressure, profiler, research, science, sea, sea_surface_wave_maximum_period, sea_surface_wave_significant_height, sea_water_pressure, seasurfaceheight, seawater, significant, speed of sound, subsurfacecurrents, subsurfacetemperature, surface, surface wave statistics, surface waves, temperature, tide height, time, velocity, water, wave, waves";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://creativecommons.org/licenses/by/4.0/";
    Float64 Northernmost_Northing 45.3631;
    String publisher_email "joel.culina@fundyforce.ca";
    String publisher_institution "Fundy Ocean Research Center for Energy (FORCE)";
    String publisher_name "Dr. Joel Culina";
    String publisher_type "person";
    String publisher_url "https://fundyforce.ca/";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 45.3631;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "This seabed-mounted Acoustic Doppler Current Profiler (ADCP), deployed for two months in spring 2018, collected 3-D velocity profiles and surface wave statistics at a location within the FORCE Crown Lease Area. Data are provided in raw (*ad2cp) form, and as processed currents and waves. These data were collected as part of a project on evaluating fish sensor capabilities at high flow sites (cf. Viehman et al 2019 in the metadata attachment).";
    String time_coverage_end "2018-05-24T16:02:30Z";
    String time_coverage_start "2018-03-30T20:02:33Z";
    String title "FORCE Acoustic Doppler Current Profiler (ADCP): Waves";
    Float64 Westernmost_Easting -64.4275;
  }
}

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 (external link)

Data Access Protocol (DAP) (external link)

and its selection 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.

(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.