ClimInd (version 0.1-2)

kbdi: Keetch-Byran Drought Index

Description

The Keetch-Byram Drought Index (KBDI) is an indicator of drought conditions and is used to predict wildfire severity.

Usage

kbdi(taverage, pr, data_names = NULL, time.scale = YEAR,
  na.rm = FALSE)

Arguments

taverage

medium temperature

pr

precipitation

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

KBDI

References

Keetch, J.J. and Byram, G.M. (1968). A drought index for forest fire control. Tech. Rep., USDA Forest Service Research Paper SE-38, North Carolina, USA. Alexander, M.E., 1990. Computer calculation of the Keetch-Byram Drought Index - programmers beware. Fire Management Notes 51, 23<U+2013>25.

Examples

# NOT RUN {
data(data_all)
kbdi(taverage = data_all$tg, pr=data_all$rr)
# }