Aquifer Pathway Outputs

Aquifer pathways have at least two outputs:

• Mass_in_Pathway. This is a vector by species with dimensions of mass. It represents the total mass of each species in the Aquifer (the sum of the mass in each Cell of the network).

• Concentration. This is a vector by species with dimensions of mass per volume. It represents the concentration of each species in the Reference Fluid at the point where it exits the Aquifer (i.e., the last Cell in the network). This is a “total concentration”, and includes species sorbed onto suspended solids.

In addition, for every advective mass flux link in which the Aquifer is the Outflow (upstream) pathway, an output is created on the Aquifer:

• Medium_to_Path2, where Medium is the name of the flowing medium, and Path2 is the name of the linked (Inflow) pathway. This is a vector by species, and has dimensions of mass/time. It represents the mass flux of each species from the Aquifer to the downstream pathway.

It is important to understand that the mass flux outputs from an Aquifer represent the mass rate over the previous timestep. This can have implications if you choose to integrate one of these outputs (using an Integrator).