Climate Impacts and Adaptations on Roads in Northern Canada
Bibliographic record
Abstract
Canada’s 900,000 km of roads covers a wide diversity of geography, activities, features and climate, with climate being characterized by 10 zones. Two of these zones cover the continuous and discontinuous areas of permafrost, but all have been considered in estimating the effects of climate change, in terms of increasing temperatures, on factors including freeze-thaw cycles, flooding and washouts, slope failures, thermal degradation, precipitation and icing. In turn, the expected outcomes of these factors on paved, gravel and snow and ice roads deterioration have been estimated. The outcomes range from minimal to definitively negative in terms of accelerated deterioration and increased costs. Some potential adaptive measures have been identified, and a case illustration of the effect of a climatic zone changing from wet, high freeze to wet low freeze with increased freeze thaw cycles is provided. This could well be the case for a northern roads situation of increasing temperatures, and the results of the case illustration indicate that for paved roads service life could be reduced by 2 to 5 years. Finally, suggestions for research on the effects of climate change on northern roads are provided, with the highest priorities related to increasing temperatures and increased freeze-thaw cycles.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".