Subject: Pedotransfer functions Posted: 7/5/2017 Viewed: 11679 times
I've run into a problem with one of the PTFs described in the WEAP documentation, as follows:
"Particle size Organic matter (Jabloun and Sahli 2006)": silt[%], clay[%], and sand[%] and organic matter[g/kg]
This model is defined by three specific equations to estimate water content at saturation, field capacity and wilting point.
Evaluating the equations given in the help file gives qSAT = 42.53, qFC = 41.58, and qWP = -18233.
The equation in the documentation matches the original paper. I can't find an erratum for this paper, but something is clearly wrong. Is there a corrected equation available?