Data Access Form

Dataset Title:	Halifax Ocean Terminals: Pier 31
Institution:	COVE (Dataset ID: SMA_halifax_anemometer1)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

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Variable	Minimum	Maximum
station_name
time (Timestamp, UTC)	2014-06-04T01:00:00Z	2024-11-20T20:00:00Z

longitude (degrees_east)	-63.56236333	-63.56236333

latitude (degrees_north)	44.63355167	44.63355167

wind_spd_avg (m s-1)	-4115.1	32.3
wind_dir_avg (Wind From Direction, degree)	0.0	360.0
wind_spd_max (m s-1)	-4115.1	319.5

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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 1.4018436e+9, 1.7321328e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Timestamp";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -63.56236333, -63.56236333;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 44.63355167, 44.63355167;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  wind_spd_avg {
    Float32 actual_range -4115.1, 32.3;
    String ioos_category "Wind";
    String long_name "Wind Spd Avg";
    String standard_name "wind_speed";
    String units "m s-1";
  }
  wind_dir_avg {
    Float32 actual_range 0.0, 360.0;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String standard_name "wind_from_direction";
    String units "degree";
  }
  wind_spd_max {
    Float32 actual_range -4115.1, 319.5;
    String ioos_category "Wind";
    String long_name "Wind Spd Max";
    String standard_name "wind_speed_of_gust";
    String units "m s-1";
  }
 }
  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_name "Centre for Ocean Ventures & Entrepreneurship (COVE)";
    String creator_url "https://coveocean.com/";
    Float64 Easternmost_Easting -63.56236333;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 44.63355167;
    Float64 geospatial_lat_min 44.63355167;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -63.56236333;
    Float64 geospatial_lon_min -63.56236333;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-11-22T09:53:48Z (local files)
2024-11-22T09:53:48Z https://cioosatlantic.ca/erddap/tabledap/SMA_halifax_anemometer1.html";
    String infoUrl "https://www.smartatlantic.ca/station_alt.html?id=halifax_pier31";
    String institution "COVE";
    String keywords "atmosphere, atmospheric, average, data, direction, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, halifax, identifier, institute, marine, max, name, other, spd, station, station_name, surface, time, timestamp, wind, wind_dir_avg, wind_from_direction, wind_spd_avg, wind_spd_max, winds";
    String keywords_fra "other";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://creativecommons.org/licenses/by/4.0/";
    Float64 Northernmost_Northing 44.63355167;
    String platform "coastal structure";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String project "SmartAtlantic";
    String publisher_email "SmartBay@smartbay.ca";
    String publisher_name "SmartAtlantic";
    String publisher_url "https://www.smartatlantic.ca/";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 44.63355167;
    String standard_name_vocabulary "CF Standard Name Table v79";
    String summary "Deployed in June 2014, the Meteorological Station is located at Pier 31 of the Halifax Ocean Terminals. The station consists of an RM Young Model 85004 anemometer, mounted on a three-meter boom arm approximately 20 meters above sea level, affixed to a light standard at the end of the pier.Data from the station is available in near-real time and is utilized by mariners in this region in support of safer and more efficient marine operations.";
    String summary_fra "Déployée en juin 2014, la station météorologique est située au quai 31 des terminaux océaniques d'Halifax. La station est composée d'un anémomètre RM Young modèle 85004, monté sur un bras de flèche de trois mètres à environ 20 mètres au-dessus du niveau de la mer, fixé à un étalon d'éclairage à l'extrémité de la pière. Les données de la station sont disponibles en temps quasi réel et sont utilisées par les navigateurs de cette région pour favoriser la sécurité et la sécurité. des opérations maritimes efficientes.";
    String testOutOfDate "now-20minutes";
    String time_coverage_end "2024-11-20T20:00:00Z";
    String time_coverage_start "2014-06-04T01:00:00Z";
    String title "Halifax Ocean Terminals: Pier 31";
    String title_fra "Halifax Ocean Terminals : Quai 31";
    String uuid "8fca8466-eb5b-4d76-b7b8-2dc19f062e87";
    Float64 Westernmost_Easting -63.56236333;
  }
}

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.