DYNAMICS AND CONTROLS OF THE NEAR-SURFACE HEAT ISLAND OF VANCOUVER, BRITISH COLUMBIA
Why this work is in the frame
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Bibliographic record
Abstract
Temporal aspects of the urban heat island (UHI) of Vancouver, British Columbia, are demonstrated using differences of screen-level air temperature observed at an urban (downtown) and rural (farmland) site for three years. On an annual basis, the UHI is at its maximum near the middle of the night and its minimum is in mid-afternoon. Growth of the nocturnal UHI is driven by rural cooling rates in the early evening, which are much greater than the almost constant rates in the city. Growth starts earlier in winter. The largest UHI occurs in the fall, and the smallest in the spring. In daytime there is often a “cool island,” especially in summer. There is an approximately inverse square root control of the UHI by wind speed and the effect of cloud type and amount follows the Bolz relation. Combining the two gives a “weather factor” that is linearly related to maximum UHI magnitude. Seasonal variation of the UHI is shown to be inversely related to the thermal admittance of the rural site, which itself is controlled largely by soil moisture status. This is done by calculating a “potential” UHI that is free of weather effects; a value that approximately conforms to that predicted by the SHIM numerical model. Surface wetting caused by recent rain, fog, or melting snow also is found to reduce UHI magnitude. While not quantified, marine advective effects appear to modify the UHI, especially the summer daytime cool island. [Key words: urban heat island (UHI), cooling rates, thermal admittance, Vancouver.]
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it