Sum of (Tavg - base) for all days where daily average temperature is
above the base temperature (default 10 degrees C).
Usage
ck_growing_degree_days(tavg, dates, base = 10, period = "annual")
Arguments
- tavg
Numeric vector of daily average temperatures (degrees C).
- dates
Date vector of the same length as tavg.
- base
Numeric. Base temperature in degrees C (default 10).
- 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
tavg <- c(15, 20, 8, 12, 25, 9, 30, 11, 22, 18)
ck_growing_degree_days(tavg, dates)
#> period value index unit
#> 1 2024-01-01 73 growing_degree_days degree-days