ETCCDI canonical index TXn. The minimum value of daily maximum
temperature (Tmax) within each reporting period (coldest day).
Usage
ck_txn(tmax, dates, period = "annual")
Arguments
- tmax
Numeric vector of daily maximum temperatures (degrees C).
- dates
Date vector of the same length as tmax.
- period
Character. Aggregation period: "annual" (default) or
"monthly".
Value
A data frame with columns period, value, index, and unit.
Examples
dates <- as.Date("2024-01-01") + 0:9
tmax <- c(5, 10, -3, 12, 4, 8, 22, -8, 7, 6)
ck_txn(tmax, dates)
#> period value index unit
#> 1 2024-01-01 -8 txn °C