C.3 Dry mass

Dry mass data fields are created and reported only for pollutants that are set to use the Washoff1 pollutant export model. They have the following properties:

• Content:
  • Reports the temporally and spatially varying dry mass of accumulated pollutant. It is initialised to zero at simulation commencement
• Name:
  • “Dry Mass <pollutant_name>”, e.g. “Dry Mass WQ_POC_MG_L”
• Units:
  • See Section 4.5.3.3.3 and Table 4.2, “Dry store mass” column

These fields are reported at all TUFLOW HPC cells for all simulated constituents that are listed within pollutant export material blocks and use the Washoff1 pollutant export model. Constant and timeseries pollutants are not reported because they are assigned only during boundary condition writing, rather than being simulated in the catchment domain. Multiplying each pollutant’s Dry Mass outputs by the TUFLOW HPC cell area (in hectares) and summing across the domain will compute the total dry store mass of each pollutant (in kilograms) as a function of time.