Observed recent changes in climate and permafrost temperatures at four sites in northern Canada
Jennifer Throop, Sharon L. Smith, Antoni G. Lewkowicz
In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost ConferenceSession: M3-D
ABSTRACT: Climate and ground temperature records 10 to 30 years in length from four widely separated permafrost monitoring sites were analyzed to assess the thermal response to recent climate warming, both seasonally and annually. The study sites are located in the tundra environments of Nunavut and the boreal forest of the Mackenzie Valley Northwest Territories. The timing and magnitude of the climate change varied regionally, and the response of the ground varied even more due to individual site conditions. Increases in winter air temperatures were significant and appear to be largely responsible for recent increases in ground temperature.
RÉSUMÉ: Les enregistrements du climat et des températures au sol ont été analysés sur une durée de 10 à 30 ans à quatre lieux de surveillance du pergélisol grandement éloignés, afin d'évaluer leur réaction thermique au réchauffement climatique récent, tant à l'échelle des saisons qu'à l'échelle des années. Les lieux d'étude sont situés dans des milieux de toundra du Nunavut et dans la forêt boréale de la vallée du Mackenzie, dans les Territoires-du-Nord-Ouest. Le moment et l'ampleur du changement climatique variaient à l'échelle régionale, et la réaction du sol variait encore davantage selon les conditions particulières du lieu. Les hausses des températures de l'air en hiver étaient importantes et semblaient être largement responsables des augmentations récentes des températures au sol. 1 INTRODUCTION
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Jennifer Throop; Sharon L. Smith; Antoni G. Lewkowicz (2010) Observed recent changes in climate and permafrost temperatures at four sites in northern Canada in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GEO2010_167,
author = Jennifer Throop; Sharon L. Smith; Antoni G. Lewkowicz,
title = Observed recent changes in climate and permafrost temperatures at four sites in northern Canada,
year = 2010
}
title = Observed recent changes in climate and permafrost temperatures at four sites in northern Canada,
year = 2010
}