ClimInd: jci – R documentation

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jci

Johansson Continentality Index

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

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

`data`	daily mean temperature, Celsius
`data_names`	names of each period of time
`value`	lat
`na.rm`	logical. Should missing values (including NaN) be removed?
`...`	further arguments passed to or from other methods

index value

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

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

data(data_all)
jci(data = data_all$tg, value = data_all$lat)

Climate Indices

v0.1-3

GPL (>= 3)

Authors

Fergus Reig-Gracia [aut, cre], Sergio M. Vicente-Serrano [aut], Fernando Dominguez-Castro [aut], Joaquin Bedia-Jiménez [ctb]

Initial release

2021-04-09