Table A4.
Setting of dispersion simulation parameters.
| Parameter | Description | Setting |
|---|---|---|
| MGAUSS | Vertical distribution used in the near field | Gaussian |
| MCTADJ | Terrain adjustment method | Partial plume path adjustment |
| MSPLIT | Puff splitting | allowed |
| MCHEM | Chemical mechanism | Transformation rates computed internally (MESOPUFF II scheme) |
| MDRY | Dry deposition modeled | Not modeled |
| MDISP | Method used to compute dispersion coefficients | Dispersion coefficients from internally calculated sigma v, sigma w using micrometeorological variables (u*, w*, L, etc.) |
| MTAULY | Method used for Lagrangian timescale for Sigma-y | Draxler default 617.284 (s) |
| MCTURB | Method used to compute turbulence sigma-v & sigma-w using micrometeorological variables | Standard CALPUFF subroutines |
| MBCON | Boundary conditions (concentration) | Not modeled |