climdex.pcic (version 1.1-11)

climdex.dtr: Mean Diurnal Temperature Range

Description

This function computes the diurnal temperature range on a monthly basis.

Usage

climdex.dtr(ci, freq = c("monthly", "annual"))

Arguments

ci

Object of type climdexInput.

freq

Time frequency to aggregate to.

Value

A vector containing the mean monthly or mean annual diurnal temperature range.

Details

climdex.dtr computes the mean daily diurnal temperature range. The frequency of observation can be either monthly or annual.

References

http://etccdi.pacificclimate.org/list_27_indices.shtml

See Also

climdexInput.raw, climdexInput.csv.

Examples

# NOT RUN {
library(PCICt)

## Create a climdexInput object from some data already loaded in and
## ready to go.

## Parse the dates into PCICt.
tmax.dates <- as.PCICt(do.call(paste, ec.1018935.tmax[,c("year",
"jday")]), format="%Y %j", cal="gregorian")
tmin.dates <- as.PCICt(do.call(paste, ec.1018935.tmin[,c("year",
"jday")]), format="%Y %j", cal="gregorian")
prec.dates <- as.PCICt(do.call(paste, ec.1018935.prec[,c("year",
"jday")]), format="%Y %j", cal="gregorian")

## Load the data in.
ci <- climdexInput.raw(ec.1018935.tmax$MAX_TEMP,
ec.1018935.tmin$MIN_TEMP, ec.1018935.prec$ONE_DAY_PRECIPITATION,
tmax.dates, tmin.dates, prec.dates, base.range=c(1971, 2000))

## Create a monthly timeseries of mean diurnal temperature range.
dtr <- climdex.dtr(ci)
# }