uai {ClimInd}

UNEP Aridity Index

Description

P/Eto

Usage

uai(eto, pr, data_names = NULL, time.scale = YEAR, na.rm = FALSE)

Arguments

eto

evapotranspiration, mm

pr

daily precipitation, mm

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

index value

References

Huiping Huang, Yuping Han, Mingming Cao, Jinxi Song, and Heng Xiao Spatial-Temporal Variation of Aridity Index of China during 1960–2013. Advances in Meteorology, vol. 2016, Article ID 1536135, 10 pages, 2016. doi: 10.1155/2016/1536135

Examples

data(data_all)
uai(eto = data_all$eto, pr = data_all$rr)