calculate_SPEI_MECC: Function to calculate SPEI

In pedroalencar1/DroughtSDF: Package to analyse Drought features and its changes using Copula and Entropy Theory

Function to calculate SPEI

Description

Function to calculate SPEI

Usage

calculate_SPEI_MECC(
  Date,
  Precipitation,
  ETP,
  scale = 3,
  year_bounds = c(1900, 2019),
  fill_gaps = F
)

Arguments

Date	series of dates (daily) to be of the time series.
Precipitation	series of daily precipitation (mm)
ETP	series of minimum daily potential evapotranspiration (mm), preferably obtained with 'calculate_ETP_daily_MECC()'
scale	integer, the number of months for accumulation computation
year_bounds	vector with two integer values, the years of beginning and end of analysis
fill_gaps	Boolean value. Indicates if the SPEI will be calculated based on the raw data (with gaps) or with the gap-filled deficit series.

Details

Note that the function exports two SPEI columns. One called 'SPEI', containing the calculated values of SPEI and with eventual NA values, due to missing data, and a second called 'SPEI_filled', where missing deficit (P-ETP) values were filled with the average value of deficit for the respective month over the time series.

pedroalencar1/DroughtSDF documentation built on May 8, 2023, 6:58 p.m.