ClimClass (version 2.0.1)

climate: Climate normals

Description

Creates climate mean monthly values from a monthly series of temperature and precipitation.

Usage

climate(series, first.yr = NULL, last.yr = NULL, max.perc.missing)

Arguments

series

the monthly series of temperature and precipitation.

first.yr

first year of the period over which climatology is calculated

last.yr

last year of the period over which climatology is calculated

max.perc.missing

maximum acceptable percentage of missing data in the averaging period from first.yr to last.yr (0-99).

Value

A data frame with climatic monthly values of: precipitation, minimum and maximum temperatures (if existing in series), mean temperature (either averaged from existing values in series, or calculated by the function as (Tn + Tx)/2), absolute minimum monthly temperature.

Details

series is a data frame with years, months, temperature (and precipitation) values. Names in series columns must include: year, month, Tn and Tx (minimum and maximum temperatures, respectively) or, as an alternative, Tm (mean temperatures).

If first.yr or last.yr are NULL (default), the lowest and highest values in series are taken as the period.

Examples

data(Trent_climate)

# clima_81_10 is a list of data frames of the type series,
# each one referring to one station
# having climatic means of temperature and precipitation

clima_81_10<-lapply(lista_cli, FUN=climate, first.yr=1981, last.yr=2010, max.perc.missing=15)