Data Access Form

Dataset Title:	Rock temperature in vertical rock face at site gunnel_west_north
Institution:	Carleton University (Dataset ID: bc_flnrod_gunnel_west_northBC16-RV01_13e5_779e)
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)

elevation (Altitude, m)

time (UTC)

2008-09-04T20:00:00Z

2019-08-12T20:00:00Z

site_name (Borehole or site name)

depth (Depth below ground surface, m)

0.0

0.1

ground_temperature (degree_C)

-32.983

30.545

Server-side Functions

distinct()

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File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 58.74607, 58.74607;
    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";
    Float32 actual_range -123.9789, -123.9789;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  elevation {
    Float32 actual_range 1471.0, 1471.0;
    String ioos_category "Location";
    String long_name "Altitude";
    String standard_name "altitude";
    String units "m";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.2205584e+9, 1.56564e+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";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.0, 0.1;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "Depth below ground surface";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  ground_temperature {
    Float32 actual_range -32.983, 30.545;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    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 alt_platform_name "BC16-RV01";
    String cdm_data_type "TimeSeriesProfile";
    String cdm_profile_variables "time";
    String cdm_timeseries_variables "latitude, longitude, elevation, site_name";
    String contributor_name "Alex Bevington, Vanessa Foord, Marten Geertsema, Emilie Stewart-Jones";
    String contributor_role "contributor, contributor, contributor, editor";
    String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/G04/current/";
    String Conventions "COARDS, CF-1.8, ACDD-1.3";
    String creator_email "stephan.gruber@carleton.ca";
    String creator_institution "Carleton University";
    String creator_name "Stephan Gruber";
    String creator_type "person";
    String creator_url "https://carleton.ca/permafrost/";
    Float64 Easternmost_Easting -123.9789;
    String environment_description "North-facing vertical rock face";
    String featureType "TimeSeriesProfile";
    String geospatial_bounds "POINT(-123.97893524169922 58.746070861816406)";
    Float64 geospatial_lat_max 58.74607;
    Float64 geospatial_lat_min 58.74607;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -123.9789;
    Float64 geospatial_lon_min -123.9789;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.1;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    Float64 ground_slope_angle 90.0;
    Float64 ground_slope_direction 339.0;
    String history 
"2020-12: cleaned with tempCF (https://gitlab.com/permafrostnet/permafrost-tempcf)
2024-11-24T19:02:56Z (local files)
2024-11-24T19:02:56Z http://data.permafrostnet.ca/erddap/tabledap/bc_flnrod_gunnel_west_northBC16-RV01_13e5_779e.html";
    String id "gunnel_west_northBC16-RV01";
    String infoUrl "https://carleton.ca/permafrost/database/";
    String institution "Carleton University";
    String institution_url "carleton.ca/permafrost";
    String instrument "HOBO U23-003";
    String keywords "bedrock, British Columbia, Ground temperature, Mountains, Permafrost";
    String keywords_vocabulary "Polar Data Catalogue Keyword Library";
    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 naming_authority "ca.permafrostnet";
    Float64 Northernmost_Northing 58.74607;
    Float64 observation_depth_max 0.1;
    Float64 observation_depth_min 0.0;
    Float64 organic_matter_thickness NaN;
    Float64 overburden_thickness NaN;
    String platform "fixed";
    String platform_name "gunnel_west_north";
    String platform_vocabulary "https://mmisw.org/ont/ioos/platform";
    Float64 project NaN;
    Float64 project_id NaN;
    String publisher_email "nick.brown@carleton.ca";
    String publisher_institution "NSERC PermafrostNet";
    String publisher_name "PermafrostNet Data Scientist";
    String publisher_type "position";
    String publisher_url "https://permafrostnet.ca";
    String region "Gunnel";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 58.74607;
    String standard_name_vocabulary "CF Standard Name Table v78";
    String subsetVariables "latitude, longitude, elevation, site_name";
    String summary "Rock temperatures from vertical or near-vertical rock faces from eight areas across British Columbia, each containing 2–7 measurement sites, for a total of 32. Data covers dates between 2008 and 2021, but is not consistent across that time period. Temperatures are collected at 10 cm below rock surface. Sites with platform names beginning with BC16 have data measured using Geoprecision Loggers, measuring at 20 minute intervals. All other sites have data measured by HOBO Loggers, measuring at hourly or bihourly intervals.";
    String surface_cover "exposed bedrock";
    String surficial_geology "Bedrock";
    String time_coverage_duration "P3994DT0H0M0S";
    String time_coverage_end "2019-08-12T20:00:00Z";
    String time_coverage_resolution "P0DT1H0M0S";
    String time_coverage_start "2008-09-04T20:00:00Z";
    String title "Rock temperature in vertical rock face at site gunnel_west_north";
    Float64 vegetation_type NaN;
    Float64 Westernmost_Easting -123.9789;
  }
}

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.