dplRCon (version 1.0)

climate.anom.dendro.season: Seasonal Data

Description

Changes monthly climate data to seasonal climate data.

Usage

climate.anom.dendro.season(climate.data, year1, year2, year.start, is.anomaly)

Arguments

climate.data

This is a matrix, normally loaded into R in CSV form with the columns: year, jan, feb, mar,..,dec

year1

is the start of the period used to calculate climate anomalies.

year2

is the end of the period used to calculate climate anomalies.

year.start

is the start date of the climate data,

is.anomaly

accepts true or false. True will calculate the anomalies; departures from the mean from the period specified in year1 and year2

Value

Return a matrix of time series with col names season for the seasons including lagged seasons; "SON_2","DJF_2","MAM_2","JJA_2","SON_1","DJF_1","MAM_1", "JJA_1","SON","DJF","MAM","JJA";

Details

This is required to change the monthly data, such as the data used in this package, to the seasons; Sept-Oct-Nov, Dec-Jan-Feb, Mar-Apr-May, Jun-Jul-Aug.

Examples

data(SOI)  # this is the Southern Oscillation Index data loaded with this package.
data(temperature) # this is the temperature data loaded with this package.
data(precipitation) # this is the precipitation data loaded with this package.
SOI.anom.season.data  <- climate.anom.dendro.season( SOI, 1933, 1992, 1876,
    is.anomaly="TRUE")
temp.anom.season.data	<- climate.anom.dendro.season( temperature, 1933, 1992, 1876,
   is.anomaly="TRUE")
prec.anom.season.data	<- climate.anom.dendro.season( precipitation, 1933, 1992, 1876,
   is.anomaly="TRUE")