thornthwaite: Function to calculate Thornthwaite potential evapotranspiration
Description
This function calculates Thornthwaite’s potential evapotranspiration.
Usage
thornthwaite(Tave, lat, na.rm = FALSE)
Value
A time series with the values of monthly potential or reference evapotranspiration, in mm. If the input is a matrix or a multivariate time series each column will be treated as independent data (e.g., diferent observatories), and the output will be a multivariate time series.
Arguments
Tave
a numeric vector, matrix or time series of monthly mean temperatures, ºC.
lat
a numeric vector with the latitude of the site or sites, in degrees.
na.rm
optional, a logical value indicating whether NA values should be stripped from the computations.
Author
Santiago Begueria
Details
This function is a modified version of SPEI::thornthwaite() function.