ClimInd (version 0.1-2)

eai: Emberger aridity index

Description

Aridity index based on annual precipitation and temperature range

Usage

eai(pr, taverage, data_names = NULL, na.rm = FALSE, ...)

Arguments

pr

precipitation

taverage

medium temperature

data_names

names of each period of time

na.rm

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

...

...

Value

Emberger Aridity Index

Formula

$$EAI = \frac {100*P}{Thm^2 - Tcm^2}$$ P = annual precipitation; Thm = Average temperature of the hottest month in Kelvin; Tcm= Average temperature of the coldest month in Kelvin

References

Emberger L. 1930. La v<U+00E9>g<U+00E9>tation de la r<U+00E9>gion m<U+00E9>diterran<U+00E9>enne: essai d'une classification des groupements v<U+00E9>g<U+00E9>taux Revue G<U+00E9>n<U+00E9>rale de Botanique, 42 (641<U+2013>662), pp. 705-721

Examples

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