Count the number of days where minimum temperature exceeds 20 degrees C.
Usage
ck_tropical_nights(tmin, dates, period = "annual")
Arguments
- tmin
Numeric vector of daily minimum temperatures (degrees C).
- dates
Date vector of the same length as tmin.
- period
Character. Aggregation period: "annual" (default) or
"monthly".
Value
A data frame with columns period, value, index, and unit.
Examples
dates <- as.Date("2024-07-01") + 0:9
tmin <- c(18, 21, 22, 19, 25, 20, 23, 17, 24, 21)
ck_tropical_nights(tmin, dates)
#> period value index unit
#> 1 2024-01-01 6 tropical_nights days