Air and ground temperature, air humidity and site characterization data from the Canadian Shield tundra near Lac de Gras, Northwest Territories, Canada

Stephan Gruber 1, Nicholas Brown 1, Emilie Stewart-Jones 1, Kumari Karunaratne 2, Julia Riddick 1, Christian Peart 1, Rupesh Subedi 1, Steve Kokelj 2
1 Carleton University
2 Northwest Territories Geological Survey

Abstract

These data were collected as a part of the Slave Province surficial materials and permafrost study (SPSMPS) which took place near the Ekati mine, north of Lac de Gras. Data comprise air and ground temperature measurements as well as detailed metadata describing surface and vegetation conditions at each site.
Study plots measuring 15 m × 15 m were selected to represent different facets of the landscape. For each plot, up to four sub-plots were selected to represent the diversity of surface characteristics within the plot area. Metadata for each plot include surface features, disturbances and topography. Sub-plot metadata include vegetation type and abundance as well as leaf-area index as measured by an accuPAR.
In the centre of each plot, thermistor cables were installed into a borehole with sensors between 0.5 and 12 m deep. At each sub-plot, a single-channel temperature logger was installed approximately 10 cm below the ground surface. Six air temperature and humidity sensors were installed 2 m above the ground surface and nine temperature sensors were drilled into bedrock. Instruments for near-surface and air temperature were programmed to record data every 20 minutes, whereas temperatures in boreholes are recorded every 60 minutes. All instruments were set to UTC time. Time series have been aggregated to hourly and daily averages. The period of data coverage is between August 2015 and September 2017.

Data citation

Gruber, S., Brown, N., Stewart-Jones, E., Karunaratne, K., Riddick, J., Peart, C., Subedi, R., Kokelj, S. 2018. Air and ground temperature, air humidity and site characterization data from the Canadian Shield tundra near Lac de Gras, Northwest Territories, Canada, v. 1.0. Nordicana D39, doi: 10.5885/45561XD-2C7AB3DCF3D24AD8.

Location map

Acknowledgements

Barrett Elliott (NTGS) and Philippe Normandeau (NTGS) coordinated and led the broader SPSMPS project. Luca Heim assisted with field work. Aurora Geosciences provided field logistics and project management support. In-kind contributions provided by the Ekati diamond mine (Dominion Diamond Corporation) facilitated much of the field work. Financial support for instruments and field work has been provided by the Northwest Territories Geological Survey, by the Canadian Northern Economic Development Agency, by the Polar Continental Shelf Program, by the Natural Sciences and Engineering Research Council of Canada, by the Canada Foundation for Innovation, and by ArcticNet (Project: "Permafrost research for northern infrastructures and improved community life").

Version history

You can request an older version by contacting nordicana@cen.ulaval.ca

Measurement sites

Site Latitude Longitude Altitude (m)
AIRT1LOW 64.593688 -110.192909 430 More info
AIRT1TOP 64.59448 -110.19844 459 More info
AIRT2LOW 64.635083 -110.26185 442 More info
AIRT2TOP 64.638916 -110.266633 471 More info
AIRT3LOW 64.702933 -110.432733 422 More info
AIRT3TOP 64.700183 -110.431816 467 More info
Bushloggers 64.59214 -110.187 429.952 More info
ROCKT2 64.6996 -110.4312 464 More info
NGO-DD-1004 64.595134 -110.238147 471.401 More info
NGO-DD-1005 64.599861 -110.235562 440.012 More info
NGO-DD-1009 64.701536 -110.443007 428.478 More info
NGO-DD-1010 64.702756 -110.439864 426.212 More info
NGO-DD-1011 64.71263 -110.4409 463.4608 More info
NGO-DD-1012 64.713829 -110.443175 480.271 More info
ROCKT3 64.70135 -110.435 459 More info
NGO-DD-2004 64.596301 -110.236467 480.004 More info
NGO-DD-2005 64.596665 -110.233142 471.732 More info
NGO-DD-2006 64.596858 -110.23067 453.087 More info
NGO-DD-2007 64.598473 -110.235525 458.723 More info
NGO-DD-2008 64.600315 -110.185084 458.413 More info
NGO-DD-2009 64.604122 -110.216846 446.402 More info
NGO-DD-2011 64.702367 -110.447866 431.673 More info
NGO-DD-2012 64.702131 -110.445915 429.7 More info
NGO-DD-2013 64.70278 -110.450064 435.446 More info
NGO-DD-2014 64.70131 -110.4392 433.2837 More info
NGO-DD-2015 64.703525 -110.442096 427.369 More info
NGO-DD-2016 64.704531 -110.444119 432.619 More info
NGO-DD-2018 64.713564 -110.435912 460.656 More info
NGO-DD-2019 64.702131 -110.435644 428.081 More info
NGO-DD-2020 64.729842 -110.402566 485.729 More info
NGO-DD-2023 64.820731 -110.420633 475.938 More info
NGO-DD-2035 64.599946 -110.234182 445.574 More info
NGO-DD-2026 64.724576 -110.345066 436.812 More info
NGO-DD-2029 64.600149 -110.184611 458.253 More info
NGO-DD-2030 64.85305 -110.46968 479.501 More info
NGO-DD-2032 64.629258 -110.547708 441.788 More info
NGO-DD-2033 64.605428 -110.21523 457.875 More info
NGO-DD-2034 64.604822 -110.211816 449.042 More info
NGO-GU-1014 64.7163 -110.4419 475.6927 More info
NGO-RC-162 64.752714 -110.446937 493.391 More info
NGO-RC-163 64.7224 -110.501508 502.171 More info
NGO-RC-164 64.722152 -110.347596 430.853 More info
NGO-RC-165 64.721582 -110.347856 430.583 More info
NGO-RC-166 64.6346 -110.260356 442.747 More info
NGO-RC-167 64.63466 -110.256747 441.472 More info
NGO-RC-168 64.641147 -110.220847 452.941 More info
NGO-RC-169 64.603665 -110.232968 464 More info
NGO-RC-170 64.591793 -110.190228 429.6277 More info
NGO-RC-171 64.591583 -110.188026 434.9998 More info
NGO-RC-172 64.665601 -109.6765504 464 More info
ROCKT1 64.70025 -110.4337 472 More info

Supplementary material

Download

Data available for download are in ZIP format. Please properly cite the data when using it.

Soil properties Get file
Site and vegetation photos Get file
Vegetation description Get file
Leaf area index Get file
Mean daily air temperature Get file
File: ds_000582551.zip Size: 29.86 KB
Sites
Data
Air temperature 07/2015 – 09/2017
Mean daily relative humidity Get file
File: ds_000582570.zip Size: 30.54 KB
Sites
Data
Air relative humidity 07/2015 – 09/2017
Mean daily ground temperature Get file
Mean hourly relative humidity Get file
File: ds_000582648.zip Size: 630.02 KB
Sites
Data
Air relative humidity 07/2015 – 09/2017
Mean hourly air temperature Get file
File: ds_000582679.zip Size: 617.87 KB
Sites
Data
Air temperature 07/2015 – 09/2017
Mean hourly ground temperature Get file
NetCDF - Daily temperature and relative humidity Get file
NetCDF - hourly temperature and relative humidity Get file
Thermistor casing above-ground height Get file