Data Access Form

Dataset Title:	Placentia Bay: North Harbour - NHARB
Institution:	DFO-MPO (Dataset ID: DFO_Sutron_NHARB)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

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Variable	Minimum	Maximum
station_name
time (Timestamp, UTC)	2017-09-01T16:20:00Z	2024-11-20T19:09:00Z

water_pressure (Sea Water Pressure, mbar)	85.5433	523.5928
water_temperature (Surface Temp Avg, degree_C)	-1.44	22.2
battery_voltage (V)	0.0	17.42
latitude (degrees_north)	47.84626	47.84626

longitude (degrees_east)	-54.09684	-54.09684

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  station_name {
    String _Encoding "UTF-8";
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station Name";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5042828e+9, 1.73212974e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Timestamp";
    String source_name "timestamp";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  water_pressure {
    Float32 actual_range 85.5433, 523.5928;
    Float64 colorBarMaximum 1050.0;
    Float64 colorBarMinimum 950.0;
    String ioos_category "Pressure";
    String long_name "Sea Water Pressure";
    String original_name "WP";
    String standard_name "sea_water_pressure";
    String units "mbar";
  }
  water_temperature {
    Float32 actual_range -1.44, 22.2;
    String ioos_category "Temperature";
    String long_name "Surface Temp Avg";
    String original_name "WT";
    String standard_name "sea_surface_temperature";
    String units "degree_C";
  }
  battery_voltage {
    Float32 actual_range 0.0, 17.42;
    String ioos_category "Other";
    String long_name "Battery Voltage";
    String original_name "YB";
    String units "V";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 47.84626, 47.84626;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -54.09684, -54.09684;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "long";
    String standard_name "longitude";
    String units "degrees_east";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_name,longitude,latitude";
    String Conventions "COARDS, CF-1.6, ACDD-1.3, NCCSV-1.2";
    String creator_email "andry.ratsimandresy@dfo-mpo.gc.ca";
    String creator_name "Fisheries and Oceans Canada - Pêches et Océans Canada";
    String creator_type "institution";
    String creator_url "https://www.dfo-mpo.gc.ca/";
    Float64 Easternmost_Easting -54.09684;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 47.84626;
    Float64 geospatial_lat_min 47.84626;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -54.09684;
    Float64 geospatial_lon_min -54.09684;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-11-22T10:33:39Z (local files)
2024-11-22T10:33:39Z https://cioosatlantic.ca/erddap/tabledap/DFO_Sutron_NHARB.html";
    String infoUrl "https://www.smartatlantic.ca/station_alt.html?id=dfo_nharb";
    String institution "DFO-MPO";
    String keywords "air, atmosphere, atmospheric, average, battery, battery_voltage, canada, data, department, dfo, dfo-mpo, earth, Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure, fisheries, identifier, latitude, longitude, mpo, name, nharb, ocean, oceans, other, pressure, science, seaSurfaceTemperature, station, station_name, surface, surface_air_pressure, surface_pressure_avg, surface_temp_avg, sutron, temperature, time, timestamp, voltage";
    String keywords_fra "other";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://creativecommons.org/licenses/by/4.0/";
    Float64 Northernmost_Northing 47.84626;
    String platform "coastal structure";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String publisher_email "SmartBay@smartbay.ca";
    String publisher_name "SmartAtlantic";
    String publisher_url "https://www.smartatlantic.ca/";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 47.84626;
    String standard_name_vocabulary "CF Standard Name Table v79";
    String summary "NHARB (47.84626 N , 54.09684 W) is a water temperature and pressure gauge located in North Harbour, Placentia Bay. The station is equipped with an HydroMet OTT Pressure Level Sensor (PLS) measuring water pressure and temperature. The sensor is connected to a SUTRON Satlink2-V2 which collect 1 min average values (from a 1 Hz internal sampling) logged every 10 min and transmitted via an Omni-directional GOES antenna every hour. The station is installed on a wharf and the sensor is moored at about 3 m depth from mean sea level. This station is part of a monitoring program led by the Northwest Atlantic Fisheries Centre (Fisheries and Oceans, Canada) to provide with an oceanographic baseline of the area.";
    String summary_fra "NHARB (47.84626 N , 54.09684 W): est une jauge de température et de pression de l'eau située à North Harbour, Placentia Bay. La station est équipée d'une sonde HydroMet OTT (PLS) mesurant la pression et la température de l'eau. La sonde est connectée à un enregistreur SUTRON Satlink2-V2 qui collecte les valeurs moyennes d'une minute (à partir d'un échantillonnage interne à 1 Hz) enregistrées toutes les 10 minutes et transmises via une antenne GOES omnidirectionnelle toutes les heures. La station est installée sur un quai et la sonde est amarré à environ 3 m de profondeur du niveau moyen de la mer. Cette station fait partie d'un programme de surveillance dirigé par le Centre des pêches de l'Atlantique Nord-Ouest (Pêches et Océans, Canada) pour fournir une base océanographique de la zone.";
    String testOutOfDate "now-2hours";
    String time_coverage_end "2024-11-20T19:09:00Z";
    String time_coverage_start "2017-09-01T16:20:00Z";
    String title "Placentia Bay: North Harbour - NHARB";
    String title_fra "Placentia Bay : North Harbour - NHARB";
    String uuid "0c789db6-ae46-4899-9d7e-eb151bf49fdd";
    Float64 Westernmost_Easting -54.09684;
  }
}

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.