Models the senescence of vegetation as mass balance of produced and lost chlorophyll in response to temperature and daylength, this in comparison to a threshold based approach which accumulated (chilling) degree days.

chlorophyll_cycling_scaled(par, data)

Arguments

par

three parameters specifying the cycling model

data

data consisting of vegetation greenness (G), mean daytime temperature (T) and daylenght (D) as a data frame

Value

Vegetation greenness values

Details

Deviates from the original by scaling synthesis with the state of the previous Gcc value (production capacity is dependent) on available tissue/capacity in t-1