| Symbol | Description | Uses |
| kup | index into 2 1/2D array, toggles between 1|2 | 10 |
| File | Line number | Procedure | Code |
| ./pkg/generic_advdiff/gad_advection.F | 124 | GAD_ADVECTION |
INTEGER i,j,k,kup,kDown |
| ./pkg/generic_advdiff/gad_advection.F | 638 | GAD_ADVECTION |
kup = 1+MOD(k+1,2) |