ck_cooling_degree_days: Cooling Degree Days

In climatekit: Unified Climate Indices for Temperature, Precipitation, and Drought

Cooling Degree Days

Description

Sum of (Tavg - base) for all days where daily average temperature is above the base temperature (default 18 degrees C).

Usage

ck_cooling_degree_days(tavg, dates, base = 18, 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 18).
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(25, 30, 22, 20, 28, 19, 32, 17, 35, 27)
ck_cooling_degree_days(tavg, dates)

climatekit documentation built on May 9, 2026, 5:08 p.m.