north_carolina_model: North Carolina model

In EduardoFernandezC/dormancyR: Functions to Compute Chill Metrics

North Carolina model

Description

Function to calculate winter chill for deciduos trees according to the North Carolina model proposed by Shaltout and Unrath (1983). This function is compatible with some chillR functions (i.e tempResponse) to estimate metrics from hourly temperature records.

Usage

north_carolina_model(HourTemp, summ = TRUE)

Arguments

HourTemp	Vector of hourly temperatures
summ	Boolean parameter indicating whether the computed metric should be provided as cumulative values over the period or as the actual accumulation for each hour

References

Shaltout A. and Unrath C. 1983. Rest completion prediction model for starkrimsom delicious apples. J. Am. Soc. Hort. Sci. 108(6): 957-961

Examples

#Example 1

library(chillR)

data <- stack_hourly_temps(KA_weather, latitude = 50.62)
north_carolina_model(data$hourtemps$Temp, summ = TRUE)

#Example 2

tempResponse(data, Start_JDay = 345, End_JDay = 58,
             models = list(North_Carolina_Units = north_carolina_model))

EduardoFernandezC/dormancyR documentation built on Aug. 24, 2022, 7:21 a.m.