ClimInd (version 0.1-2)

fffi: Finnish Forest Fire Index

Description

Finnish forest fire index is determined from the surface moisture, by estimating the volumetric moisture of a 60 mm thick soil surface layer using potential evaporation and precipitation data.

Usage

fffi(data, evap, data_names = NULL, time.scale = YEAR, na.rm = FALSE)

Arguments

data

precipitation

evap

potential evapotranspiration

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

FFFI

References

Ven<U+00E4>l<U+00E4>inen A, Heikinheimo M. 2003. The Finnish forest fire index calculation system. In Early Warning Systems for Natural Disaster Reduction, Zschau J, Kuppers A (eds). Springer: Berlin; 645<U+2013>648.. Vajda, A., Venalainen, A., Suomi, I., Junila, P. and Makela, H., 2014. Assessment of forest fire danger in a boreal forest environment: description and evaluation of the operational system applied in Finland. Meteorol. Appl., 21: 879-887, DOI: 10.1002/met.1425

Examples

# NOT RUN {
data(data_all)
fffi(data = data_all$rr, evap=data_all$evapotranspiration)
# }