Sunshine duration percentage
Sunshine duration fraction with respect to day length (
ssp(data, data_names = NULL, time.scale = YEAR, na.rm = FALSE)
data |
insolation, hours of sun |
data_names |
names of each period of time |
time.scale |
month, season or year |
na.rm |
logical. Should missing values (including NaN) be removed? |
percentage
SSP = \frac{SS} {SSmax} * 100
SS: sum of sunshine duration (h); SSmax: maximun daylight (h)
European Climate Assessment & Dataset. Indices dictionary. https://www.ecad.eu//indicesextremes/indicesdictionary.php
data(data_all) ssp(data = data_all$insolation)
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