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The horizontal area covered by tree canopies. Maps community type & fire regime, as well as habitat for tree-dwelling species.
The distance between the ground and the top of the canopy. Canopy height is a good proxy for aboveground biomass.
Canopy Base Height
The distance between the ground and the lowest branches in the canopy. Predicts whether a surface fire transitions to a canopy fire.
Canopy Bulk Density
The mass of available fuel that burns in a canopy fire—typically the leaves and small branches— divided by the volume of the crown.
Surface Fuel Model
A model describing vegetation fuel type, size class, depth, moisture content and heat content. Determines fire behavior patterns like flame length and spread rate.
Ladder Fuel Density
The amount of brush and/or understory fuels. Maps where low-lying surface fires are most likely transition to canopy fires.
Green Vegetation Abundance
The amount of green, leafy vegetation. This includes all photosynthetic tissues.
Dry Vegetation Abundance
The amount of dry or dead vegetation, including dead grass, timber slash, dry brush, and leaf litter.
Vertical Layer Count
The number of distinct vertical canopy layers. Vertical layer count is a proxy for leaf area index, and maps canopy complexity.
A metric of the amount of vegetation consumed in a fire, as well as the heat at which it burned.
Active Hot Spots
Active wildfire hotspots measured by VIIRS, a satellite that measures thermal anomalies twice daily.
Wind speed, wind direction, temperature, and humidity. Determines the rate of fire spread, especially in grass or shrub fires.