PermafrostNet ERDDAP
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Dataset Title:	Ground temperature data from HPW_Dempster_km421_road
Institution:	Yukon Government, Department of Highways and Public Works, Transportation Engineering Branch (Dataset ID: tg_ygs_119_hpw_dempster_km421_r)
Range:	longitude = -136.3586 to -136.3586°E, latitude = 66.70093 to 66.70093°N, time = 2015-01-24T00:00:00Z to 2021-01-19T00:00:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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Graph Type:

X Axis:

Y Axis:

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Constraints

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Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

Graph Settings

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Then set the File Type: (File Type information)
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or view the URL:
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Click on the map to specify a new center point.

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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 66.70093, 66.70093;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -136.35864, -136.35864;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  surface_elevation {
    Float32 actual_range 634.0, 634.0;
    String ioos_category "Location";
    String long_name "Ground surface elevation";
    String units "m";
  }
  depth_below_ground_surface {
    String _CoordinateAxisType "Height";
    Float32 actual_range 0.3, 10.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth to observation";
    String positive "down";
    String standard_name "depth";
    String standard_name_url "https://mmisw.org/ont/cf/parameter/depth";
    String units "m";
  }
  time {
    Int32 _ChunkSizes 512;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4220576e+9, 1.6110144e+9;
    String axis "T";
    String calendar "gregorian";
    String cf_role "profile_id";
    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";
  }
  site_name {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Borehole or site name";
    String standard_name "platform_name";
  }
  ground_temperature {
    Int32 _ChunkSizes 1, 9;
    Float32 actual_range -33.18, 23.005;
    String coordinates "site_name depth_below_ground_surface latitude longitude";
    String ioos_category "Temperature";
    String long_name "Ground temperature";
    String platform "site_name";
    String standard_name "temperature_in_ground";
    String standard_name_url "https://mmisw.org/ont/cf/parameter/temperature_in_ground";
    String units "degree_C";
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.7.3,hdf5=1.10.6";
    String cdm_altitude_proxy "depth_below_ground_surface";
    String cdm_data_type "TimeSeriesProfile";
    String cdm_profile_variables "time";
    String cdm_timeseries_variables "longitude, surface_elevation, latitude, site_name";
    String Conventions "COARDS, CF-1.8, ACDD-1.3";
    String creator_institution "Yukon Government, Department of Highways and Public Works, Transportation Engineering Branch";
    String creator_name "Yukon Government, Department of Highways and Public Works, Transportation Engineering Branch";
    String creator_type "institution";
    String date_created "2021-01-19T00:00:00Z";
    String date_modified "2021-01-19T00:00:00Z";
    Float64 Easternmost_Easting -136.3586;
    String featureType "TimeSeriesProfile";
    String geospatial_bounds "POINT(-136.358642578125 66.700927734375)";
    Float64 geospatial_lat_max 66.70093;
    Float64 geospatial_lat_min 66.70093;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -136.3586;
    Float64 geospatial_lon_min -136.3586;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-04-27T15:44:39Z (local files)
2024-04-27T15:44:39Z http://data.permafrostnet.ca/tabledap/tg_ygs_119_hpw_dempster_km421_r.das";
    String id "tg_ygs_119_hpw_dempster_km421_r";
    String infoUrl "https://service.yukon.ca/permafrost/";
    String institution "Yukon Government, Department of Highways and Public Works, Transportation Engineering Branch";
    String keywords "Ground temperature, Permafrost, Yukon";
    String keywords_vocabulary "https://www.polardata.ca/pdcinput/public/keywordlibrary";
    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 metadata_link "https://service.yukon.ca/permafrost/";
    Float64 Northernmost_Northing 66.70093;
    Float32 observation_depth_max 10.0;
    Float32 observation_depth_min 0.3;
    String platform_name "HPW_Dempster_km421_road";
    String publisher_email "ygs-surficial@yukon.ca";
    String publisher_name "Yukon Geological Survey";
    String publisher_type "institution";
    String references "Lipovsky, P.S., Humphries, J.K., Stewart-Jones, E.T. and Cronmiller, D.C., 2022. Yukon Permafrost Database: A new baseline data resource. In: Yukon Exploration and Geology 2021, K.E. MacFarlane (ed.), Yukon Geological Survey, p. 37-49.";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 66.70093;
    String standard_name_vocabulary "CF Standard Name Table v78";
    String subsetVariables "longitude, surface_elevation, latitude, site_name, time";
    String summary "Ground temperature data from HPW_Dempster_km421_road (Yukon Permafrost Database).";
    String time_coverage_duration "P2187DT0H0M0S";
    String time_coverage_end "2021-01-19T00:00:00Z";
    String time_coverage_resolution "P1DT0H0M0S";
    String time_coverage_start "2015-01-24T00:00:00Z";
    String title "Ground temperature data from HPW_Dempster_km421_road";
    Float64 Westernmost_Easting -136.3586;
  }
}

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.

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