pici: Pinna Combinative Index

In ClimInd: Climate Indices

Description

Pinna combinative index is an aridity–humidity index

Usage

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

Arguments

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

Value

index value

Formula

PICI = \frac {1}{2} ≤ft(\frac{P}{TG+10}+\frac{12Pdm}{TGdm+10}\right)

P = annual precipitation (mm); TG = annual mean temperature (Celsius); Pdm= precipitation of the driest month; TGdm= temperature of the driest month

References

Zambakas J. 1992. General Climatology. Department of Geology, National & Kapodistrian University of Athens: Athens, Greece.

Examples

data(data_all)
pici(pr = data_all$rr, taverage = data_all$tg)

Example output

Loading required package: SPEI
Loading required package: lmomco
Loading required package: parallel
Loading required package: ggplot2
# Package SPEI (1.7) loaded [try SPEINews()].
Loading required package: chron
Loading required package: weathermetrics
     2050      2051      2052      2053      2054      2055      2056      2057 
       NA        NA        NA        NA        NA        NA        NA        NA 
     2058      2059      2060      2061      2062      2063      2064      2065 
       NA        NA        NA        NA        NA        NA        NA        NA 
     2066      2067      2068      1969      1970      1971      1972      1973 
       NA        NA        NA        NA        NA        NA        NA        NA 
     1974      1975      1976      1977      1978      1979      1980      1981 
       NA        NA        NA        NA        NA        NA 12.467493 11.151032 
     1982      1983      1984      1985      1986      1987      1988      1989 
13.159887 10.697234 12.960826 10.779597 13.208090 12.857181 13.101147 15.004825 
     1990      1991      1992      1993      1994      1995      1996      1997 
 9.901906 12.263701 11.926292 10.254165  7.111485 10.033158 14.797475 12.825694 
     1998      1999      2000      2001      2002      2003      2004      2005 
10.471391 10.695038  8.630807  8.159122 12.843984 12.777438 10.891787  8.748743 
     2006      2007      2008      2009      2010      2011      2012      2013 
 8.747277 10.760905 14.645502  9.723345 13.673085  9.813341  8.925686 13.241564 
     2014      2015      2016      2017 
10.815896 10.493876 11.479807  7.978546 

ClimInd documentation built on April 10, 2021, 1:06 a.m.