Examining the Viability of the World's Busiest Winter Road to Climate Change Using a Process-Based Lake Model
Data and Resources
Additional Info
| Field | Value |
|---|---|
| Creator | D. J. Mullan, I. D. Barr, R. P. Flood, J. M. Galloway, A. M. W. Newton, and G. T. Swindles |
| Summary | Winter roads play a vital role in linking communities and building economies in the northern high latitudes. With these regions warming 2–3 times faster than the global average, climate change threatens the long-term viability of these important seasonal transport routes. We examine how climate change will impact the world’s busiest heavy-haul winter road—the Tibbitt to Contwoyto Winter Road (TCWR) in northern Canada. The FLake freshwater lake model is used to project ice thickness for a lake at the start of the TCWR—first using observational climate data, and second using modeled future climate scenarios corresponding to varying rates of warming ranging from 1.5° to 4°C above preindustrial temperatures. Our results suggest that 2°C warming could be a tipping point for the viability of the TCWR, requiring at best costly adaptation and at worst alternative forms of transportation. Containing warming to the more ambitious temperature target of 1.5°C pledged at the 2016 Paris Agreement may be the only way to keep the TCWR viable—albeit with a shortened annual operational season relative to present. More widely, we show that higher regional winter warming across much of the rest of Arctic North America threatens the long-term viability of winter roads at a continental scale. This underlines the importance of continued global efforts to curb greenhouse gas emissions to avoid many long-term and irreversible impacts of climate change. |
| Local Relevance | This study investigates the viability of the Tibbitt-to-Contwoyto Winter Road, which is the NWT's primary winter road for providing land access to the various mines in the NWT. |
| Notes | |
| Tags | Winter Road,Ice Road,Modelling,Tibbitt to Contwoyto Winter Road |
| Geographic Region | North Slave |
| Release Date | 2021-07-01 |
| Last Modified Date | 2021-07-01 |
| Funding Program |