Model INCA–Pathogens (Integrated Catchments Model – Pathogens)
INCA-Pathogens is a processed based dynamic model representation of terrestrial system for pathogen dynamics and instream pathogen dynamics and interactions with bed sediment stores. It is spatially semi-distributed.
Whitehead P G , Leckie H, Rankinen K , Butterfield D, Futter M.N. and Bussi G. 2016 An INCA Model for Pathogens in Rivers and Catchments: Model Structure, Sensitivity Analysis and Application to the River Thames Catchment in the UK, Science of the Total Environment, doi:10.1016/j.scitotenv.2016.01.128. available at http://www.sciencedirect.com/science/article/pii/S0048969716301267
Timeseries of hydrological and meteorological driving data: Soil moisture deficit (SMD), hydrologically effective rainfall (HER), rainfall, air temperature. SMD and HER can be derived via a simple spreadsheet-based hydrology model, or from models such as MORECS
For model calibration and validation: observed pathogens eg Total Coliforms and hydrology timeseries
Fertilizer and manure inputs to different land use types
Net plant uptake from different land use types
Effluent inputs to river reaches
Water abstraction from river reaches
GIS-derived sub-catchment characteristics, e.g. stream length, sub-catchment area
Time series of flow and pathogens concentrations of river waters, sediments and soils.