Table 2 List of variables selected for use within the random forest models. N/A indicates that there is no need to summarize the measurement across all funnels in each cluster as the measurements will be identical across funnels in the same cluster
From: Estimating WUI exposure probability to a nearby wildfire
Explanatory variables | Description of explanatory variables | Method to summarize for multiple funnels in a cluster |
|---|---|---|
isImpact | Dependent variable denoting whether a fire would finally spread into a WUI block (isImpact=1) or not (isImpact=0) | N/A |
Gust | The average hourly wind gust speed within a 2-day window before the earliest recorded day when a fire entered a WUI block; in case fire did not impact a WUI, a 2-day window before the final fire containment is used; measured by meter per second. | N/A |
leakRatio_max | Max leak ratios calculated for all funnels in the same cluster. | Max |
PCLMean | Average funnel-mean-PCL in the same cluster. | Average |
rdDensityClosest | Road densities in the funnel of the closest fire perimeter to a WUI. It is calculated as the total number of raster cells within the 120-m buffers of all roads divided by the total number of raster cells in the funnel. | Closest |
SDIClosest | Average SDI in the funnel formed from the closest fire perimeter to each WUI in each cluster. | Closest |
WUIDist | Distance between the earliest recorded fire perimeter and a WUI block; measured by meters. | N/A |
WUISize | The size of the WUI block of interest; measured by acres. | N/A |