gdha_model {ChillModels}

GDH Model - Anderson - for heat accumulation

Description

Quantifies the Growing Degree Hours at between the base and optimum temperatures, by Anderson et al. (1986).

Usage

gdha_model(x, total = TRUE)

Arguments

x

Vector containing temperature values (Celsius-degree).

total

TRUE Shows the total value of accumulation, FALSE shows the value of GDH for each temperature (TRUE is default).

Details

The GDH Model is based on base and optimum temperature. The base temperature is 4°C. The optimum and critical temperature are 25°C and 36°C, respectively.

Value

The function returns values the GDH for each temperature of vector.

References

Anderson, J. L. et al. 1986. Validation of chill unit and flower bud phenology models for "Montmorency" sour cherry. Acta Horticulturae - Modelling in Fruit Research.

Examples

x <- rnorm(500,8,3)
gdha_model(x)
gdha_model(x, FALSE)