28.1.125 PIPlatt

Function

y = P_{m}\cdot tanh\left (\frac {\alpha\cdot x}{P_{m}}\right )

Brief Description

Model of photosynthesis vs. irradiance curve by Platt.

Sample Curve

PIPlatt FitFunc.png

Parameters

Number: 2

Names: Pm, alpha

Meanings: Pm = photosynthetic capacity, alpha = photosynthetic efficiency

Lower Bounds: Pm > 0, alpha > 0

Upper Bounds: none

Derived Parameters

Refer to the curve in Sample Curve section:

Half-saturation constant: Ik = atanh(0.5)*Pm/alpha

Script Access

nlf_PIPlatt(x,Pm,alpha)

Function File

PIPlatt.FDF

Category

Exponential