ClimInd (version 0.1-2)

ffdi: McArthur Forest Fire Danger Index

Description

The McArthur Forest Fire Danger Index (FFDI) is a good indication of the difficulty of fire suppression over a wide range of conditions. It estimates the amount of precipitation needed to bring the soil back to saturation and is computed from the Keetch-Byram Drought Index (KBDI) and Drought Factor (DF).

Usage

ffdi(taverage, pr, rh, w, data_names = NULL, time.scale = YEAR,
  na.rm = FALSE)

Arguments

taverage

medium temperature

pr

precipitation

rh

relative humidity

w

average wind

data_names

names of each period of time

time.scale

month, season or year

na.rm

logical. Should missing values (including NaN) be removed?

Value

FFDI

References

McArthur, A. G. (1967). Fire behaviour in eucalypt forests. Forestry and Timber Bureau Leaflet 107, 36 pp.

Examples

# NOT RUN {
data(data_all)
ffdi(taverage = data_all$tg, pr=data_all$rr, rh=data_all$humidity, w=data_all$wind)
# }