climdex.pcic (version 0.1-2)

climdex.su: climdex.su

Description

These functions compute the climdex indices FD, SU, ID, and TR.

Usage

climdex.fd(ci)
climdex.su(ci)
climdex.id(ci)
climdex.tr(ci)

Arguments

ci

Object of type climdexInput.

Value

• A vector containing the number of days meeting the criteria of the index for each year.

Details

These functions take a climdexInput object as input and compute the climdex indices FD, SU, ID, and TR. These are:

• FD:

{Number of frost days; annual count of days days where daily minimum temperature drops below 0 degrees Celsius.} SU:{Number of summer days; annual count of days where daily maximum temperature exceeds 25 degrees Celsius.} ID:{Number of icing days; annual count of days where daily maximum temperature is below 0 degrees Celsius.} TR:{Number of tropical nights; annual count of days where daily minimum temperature exceeds 20 degrees Celsius.}

References

http://cccma.seos.uvic.ca/ETCCDMI/list_27_indices.shtml

See Also

climdexInput.raw, climdexInput.csv.

Examples

## Create a climdexInput object from some data already loaded in and
## ready to go.
## tmax.data, tmin.data, and prec.data are vectors of real numbers.
ci <- climdexInput.raw(tmax.data, tmin.data, prec.data,
tmax.dates, tmin.dates, prec.dates, base.range=c(1971, 2000))

## Create an annual timeseries of the number of frost days.
fd <- climdex.fd(ci)

## Create an annual timeseries of the number of summer days.
su <- climdex.su(ci)

## Create an annual timeseries of the number of icing days.
id <- climdex.id(ci)

## Create an annual timeseries of the number of tropical nights.
tr <- climdex.tr(ci)