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)
three parameters specifying the cycling model
data consisting of vegetation greenness (G), mean daytime temperature (T) and daylenght (D) as a data frame
Vegetation greenness values
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