PermafrostNet ERDDAP
Easier access to scientific data

Make A Graph

Dataset Title:	Ground temperature observations for site USF HE 2
Institution:	(1) University of Victoria (2) Northwest Territories Geological Survey (Dataset ID: NTGS2017-009_USF_HE_2)
Range:	longitude = -135.0672 to -135.0672°E, latitude = 67.27232 to 67.27232°N
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Advanced : Privacy and security : Site Settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

Graph Type:

X Axis:

Y Axis:

Color:

Constraints

Optional
Constraint #1

Optional
Constraint #2

Server-side Functions

distinct()

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

Graph Settings

Marker Type:

Size:

Color:

Color Bar:

Continuity:

Scale:

Minimum:

Maximum:

N Sections:

Draw land mask:

Y Axis Minimum:

Maximum:

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

Optional:
Then set the File Type: (File Type information)
and

or view the URL:
(Documentation / Bypass this form

)

Click on the map to specify a new center point.

Zoom:

Time range:

[The graph you specified. Please be patient.]

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 67.27232, 67.27232;
    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 -135.0672, -135.0672;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  elevation {
    Float32 actual_range 329.837, 329.837;
    String ioos_category "Location";
    String standard_name "height_above_reference_ellipsoid";
    String units "m";
  }
  time {
    UInt32 _ChunkSizes 512;
    String _CoordinateAxisType "Time";
    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";
  }
  depth_below_ground_surface {
    String _CoordinateAxisType "Height";
    Float32 actual_range 0.05, 1.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth below ground surface";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  ground_temperature {
    UInt32 _ChunkSizes 1, 1, 2;
    Float32 actual_range -4.167, 20.579;
    String coordinates "site_name depth latitude longitude";
    String ioos_category "Temperature";
    String long_name "Ground temperature";
    String platform "site_name";
    String standard_name "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 "latitude, longitude, elevation, site_name";
    String Conventions "COARDS, CF-1.8, ACDD-1.3";
    String creator_email "(1) tlantz@uvic.ca (2) Steve_Kokelj@gov.nt.ca";
    Float64 Easternmost_Easting -135.0672;
    String environment_description "5 m from embankment on N side of road";
    String featureType "TimeSeriesProfile";
    String geospatial_bounds "POINT(-135.06719970703125 67.27232360839844)";
    Float64 geospatial_lat_max 67.27232;
    Float64 geospatial_lat_min 67.27232;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -135.0672;
    Float64 geospatial_lon_min -135.0672;
    String geospatial_lon_units "degrees_east";
    Float64 ground_slope_angle 8.778207;
    Float64 ground_slope_direction 105.088;
    String history 
"2025-11-04T15:25:28Z https://app.nwtgeoscience.ca/Searching/ReferenceSearch.aspx
2025-11-04T15:25:28Z http://data.permafrostnet.ca/tabledap/NTGS2017-009_USF_HE_2.das";
    String id "NTGS2017-009_USF HE 2";
    String infoUrl "https://app.nwtgeoscience.ca/Searching/ReferenceSearch.aspx";
    String institution "(1) University of Victoria (2) Northwest Territories Geological Survey";
    String license "The use of the published data will not carry restrictions. Full citation of referenced publications and reports by users is required.";
    Float64 Northernmost_Northing 67.27232;
    Float32 observation_depth_max 1.0;
    Float32 observation_depth_min 0.05;
    String organic_matter_thickness "Thin (0-10 cm)";
    String overburden_thickness ">1m";
    String platform_name "USF HE 2";
    String project "A Watershed Approach to Monitoring Cumulative Impacts of Landscape Change";
    String publisher_email "NTGS@gov.nt.ca";
    String publisher_institution "Northwest Territories Geological Survey";
    String publisher_name "Northwest Territories Geological Survey";
    String publisher_type "institution";
    String publisher_url "https://www.nwtgeoscience.ca/";
    String sourceUrl "https://app.nwtgeoscience.ca/Searching/ReferenceSearch.aspx";
    Float64 Southernmost_Northing 67.27232;
    String subsetVariables "latitude, longitude, elevation, site_name";
    String summary "Ground temperature data obtained from NTGS data report 2017-009";
    String surface_cover "Other Vegetation";
    String surficial_geology "Till";
    String time_coverage_duration "P372DT12H0M0S";
    String time_coverage_resolution "P0DT2H0M0S";
    String title "Ground temperature observations for site USF HE 2";
    String vegetation_type "Coniferous Forest";
    Float64 Westernmost_Easting -135.0672;
  }
}

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.

ERDDAP, Version 2.28.1
Disclaimers | Privacy Policy | Contact