Data Access Form

Dataset Title:	Ground temperature data from HPW_Willow_road
Institution:	Yukon Government, Department of Highways and Public Works, Transportation Engineering Branch (Dataset ID: tg_ygs_130_hpw_willow_r)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

latitude (degrees_north)

longitude (degrees_east)

surface_elevation (Ground surface elevation, m)

depth_below_ground_surface (m)

0.3

2.0

time (UTC)

site_name (Borehole or site name)

ground_temperature (degree_C)

-20.84208

24.71917

Server-side Functions

distinct()

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

File type: (more information)

(Documentation / Bypass this form )

(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 63.01001, 63.01001;
    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 -136.4684, -136.4684;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  surface_elevation {
    Float32 actual_range 656.0, 656.0;
    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, 2.0;
    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 1.514592e+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, 8;
    Float32 actual_range -20.84208, 24.71917;
    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 -136.4684;
    String featureType "TimeSeriesProfile";
    String geospatial_bounds "POINT(-136.46839904785156 63.010009765625)";
    Float64 geospatial_lat_max 63.01001;
    Float64 geospatial_lat_min 63.01001;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -136.4684;
    Float64 geospatial_lon_min -136.4684;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-11-24T18:46:42Z (local files)
2024-11-24T18:46:42Z http://data.permafrostnet.ca/erddap/tabledap/tg_ygs_130_hpw_willow_r.html";
    String id "tg_ygs_130_hpw_willow_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 63.01001;
    Float32 observation_depth_max 2.0;
    Float32 observation_depth_min 0.3;
    String platform_name "HPW_Willow_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 63.01001;
    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_Willow_road (Yukon Permafrost Database).";
    String time_coverage_duration "P1116DT0H0M0S";
    String time_coverage_end "2021-01-19T00:00:00Z";
    String time_coverage_resolution "P1DT0H0M0S";
    String time_coverage_start "2017-12-30T00:00:00Z";
    String title "Ground temperature data from HPW_Willow_road";
    Float64 Westernmost_Easting -136.4684;
  }
}

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.