Module soiling 

Functions

accumulation_model

Simplified soiling loss mass accumulation model (inspired by Hsu et al).

hsu

HSU soiling model convenience function for a single timestep.

hsu_mass_rate

HSU soiling model - single timestep mass accumulation update.

hsu_soiling_ratio

Converts accumulated soiling mass to a soiling ratio using the HSU model.

kimber

Kimber soiling model - single timestep update.