ClimInd (version 0.1-2)

jci: Johansson Continentality Index

Description

The Johansson Continentality Index is usually used for the climatic differentiation between continental and oceanic climates.

Usage

jci(data, data_names = NULL, value, na.rm = FALSE, ...)

Arguments

data

medium temperature

data_names

names of each period of time

value

lat

na.rm

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

...

...

Value

JCI

Formula

$$JCI = \frac {1.7(Thm-Tcm)}{sinf}-20.4$$ Thm = Average temperature of the hottest month (Celsius); Tcm = Average temperature of the coldest month (Celsius); f = geographical latitude

References

Chronopoulou-Sereli A. 1996. Courses of Agricultural Meteorology.Publications Agricultural University of Athens: Athens, OH

Examples

# NOT RUN {
data(data_all)
jci(data = data_all$tg, value = data_all$lat)
# }