Heatwave: Calculates The Frequency And Duration Of Heatwaves

In alasdairhunter/MagicWP7: Package for computing climate extremes from the CMIP data.

Description

Returns the number of distint heatwave events and the total duration of all the heatwave events combined. Here, a heatwave occurs when the temperature exceeds the threshold for more than a specified minimum number of days

Usage

Heatwave(proj, ref, threshold = NULL, quantile = 0.99, min_length = 3)

Arguments

proj	Vector of projected or forecasted temperatures
ref	Vector of temperatures from the references period
threshold	The minimum temperature needed for a heatwave
quantile	The quantile used to define the threshold from the reference data, if threshold = NULL.

\tem

min_length The minimum number of consecutive days that the temperature must exceed the threshold for a heatwave classification.

Value

$ref.freq: the number of heatwave events in the reference data
$ref.duration: the total duration of all heatwave events combined in the reference data
$proj.freq: the number of heatwave events in the reference data
$proj.duration: the total duration of all heatwave events combined in the reference data
$threshold the temperature threshold used to define a heatwave

Author(s)

History:
0.1 - 2017-02 (A. Hunter, [e-mail]) - Original code

Examples

ref <- c(1,1,1,1,1,3,3,3,3,3,8,8,8,8,3,3,3,3,3,3,3)
proj <- c(3,3,3,10,10,10,10,3,3,3,10,10,10,10,10)
hw <- Heatwave(proj, ref, quantile = 0.8)

alasdairhunter/MagicWP7 documentation built on May 10, 2019, 8:50 a.m.