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Application of CMIP6 General Circulation Model Climate Data in Geohazard Management and Risk Evaluation for Highway Infrastructure in the Northwest Territories

Frank Hung, Mark Halverson, Heather Brooks, Lukas Arenson, Cameron Ross

In the proceedings of: GeoManitoba 2025: 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference

Session: CPA Regional Scale

ABSTRACT: Geohazard impacts on transportation infrastructure are increasingly being driven by climate change; risk evaluation requires inclusion of these changing conditions. In cold regions, climate warming drives the need for management of highway embankment assets built on degrading permafrost. The Northwest Territories highway system has been used as a trial for applying climate model data to geohazard risk and geo-asset management in a changing climate. The Pacific Climate Impacts Consortium has published a methodology for selection of applicable Global Circulation Models to use in climate analysis within a given region. Temperature and precipitation projections from these models have been adopted as inputs for geohazard risk calculations. Stochastic methods were employed in analysis of geohazards to simulate uncertainty in model parameters, and probabilistic risk values are calculated. A risk-informed approach to a transportation system wide geohazard management can be developed using these models.


RÉSUMÉ: L’évaluation des géorisques, amplifiés par les changements climatiques et auxquels sont soumises les infrastructures de transport, doit intégrer ces basculements climatiques. Dans les régions froides, le réchauffement climatique requiert une gestion des remblais routiers construits sur un pergélisol qui se désintègre. Le système routier des Territoires du Nord-Ouest a servi de terrain d’essai pour l’intégration des données issues des modèles climatiques à la gestion des géorisques et leur environnement. Le Pacific Climate Impacts Consortium a publié une méthode pour étudier le climat d’une région donnée à l’aide du modèle de circulation générale le plus approprié; les projections de températures et précipitations extraites de ce modèle servent d’intrants pour calculer les géorisques. Pour analyser ces risques, l’incertitude sur les paramètres du modèle a été simulée avec des méthodes stochastiques et des valeurs de risque probables ont été calculées. Avec ces modèles intégrant le risque, une approche de gestion des géorisques peut être élaborée pour tout le réseau routier.


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Cite this article:
Hung, Frank, Halverson, Mark, Brooks, Heather, Arenson, Lukas, Ross, Cameron (2025) Application of CMIP6 General Circulation Model Climate Data in Geohazard Management and Risk Evaluation for Highway Infrastructure in the Northwest Territories in GEO2025. Ottawa, Ontario: Canadian Geotechnical Society.

@inproceedings{Hung_GEO2025_214, author = {{Hung, Frank}, {Halverson, Mark}, {Brooks, Heather}, {Arenson, Lukas}, {Ross, Cameron}}
title = {Application of CMIP6 General Circulation Model Climate Data in Geohazard Management and Risk Evaluation for Highway Infrastructure in the Northwest Territories }
booktitle = {Proceedings of the 78th Canadian Geotechnical Conference & 9th Canadian Permafrost Conference}
year = {2025}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
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