medfate (version 4.7.0)

fuel_windAdjustmentFactor: Wind adjustment factor for Rothermel's model

Description

Function fuel_windAdjustmentFactor determines the adjustment factor of wind for surface fires, according to Andrews (2012).

Usage

fuel_windAdjustmentFactor(
  topShrubHeight,
  bottomCanopyHeight,
  topCanopyHeight,
  canopyCover
)

Value

A scalar value between 0 and 1

Arguments

topShrubHeight

Shrub stratum top height (in m).

bottomCanopyHeight

Canopy base height (in m).

topCanopyHeight

Canopy top height (in m).

canopyCover

Canopy percent cover.

References

Andrews, P. L. 2012. Modeling wind adjustment factor and midflame wind speed for Rothermel’s surface fire spread model. USDA Forest Service - General Technical Report RMRS-GTR:1–39.

Examples

#Load example plot plant data
 data(exampleforest)
  
#Default species parameterization
data(SpParamsMED)

#Calculate fuel properties according to FCCS
fccs <- fuel_FCCS(exampleforest, SpParamsMED)

# Estimate wind adjustment factor
fuel_windAdjustmentFactor(fccs$htc[2], fccs$hbc[1], fccs$htc[1], fccs$cover[1])