Standardised Precipitation-Evapotranspiration Index 1
Standardized precipitation-evapotranspiration index calculated at 1-month time scale
spei1(eto, pr, data_names = NULL, na.rm = FALSE, ...)
eto |
evapotranspiration, mm |
pr |
daily precipitation, mm |
data_names |
names of each period of time |
na.rm |
logical. Should missing values (including NaN) be removed? |
... |
further arguments passed to or from other methods |
index value
Vicente-Serrano, S. M., Beguería, S. and López-Moreno, J. I.: A multiscalar drought index sensitive to global warming: The standardized precipitation evapotranspiration index, J. Clim., 23(7), doi: 10.1175/2009JCLI2909.1, 2010.
data(data_all) spei1(eto = data_all$eto, pr = data_all$rr, na.rm = TRUE)
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