climdex.dtr: Mean Diurnal Temperature Range

In climdex.pcic: PCIC Implementation of Climdex Routines

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.

Details

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

Value

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

Note

This function creates results which may differ in the 3rd decimal place from the results from fclimdex.

References

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

See Also

climdexInput.raw, climdexInput.csv.

Examples

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)

climdex.pcic documentation built on March 26, 2020, 7:17 p.m.