GENII 2.0 Atmospheric Transport Acute Gaussian Plume Model
Gaussian Plume - Most commonly used atmospheric dispersion model. It is consistent with the random nature of turbulence. It is a solution to the Fickian (K-theory) diffusion equation for constants K and u.
Acute Plume Model:
Straight-line centerline Gaussian for individuals
For short (~2 hour releases)
Single source
Ground-level or elevated releases
Radial or square grid
Radial sectors by 16 compass points or 10 degrees
Parameterizations Available in All Air Models
Building wake/low-speed meander
Buoyancy-induced diffusion
Plume rise/downwash corrections:
Diabatic wind profile
Sources of Data for Atmospheric Models:
Hourly data
CD-144 format (National Climatic Data Center-NCDC)
SAMSON format (NCDC)
1st order stations 161-1990 on 3 CDs
Precipitation in TD-3240 format (NCDC)
Joint frequency data
- STAR (ISC-3)
- GENII V.1.485
Limitations:
Up to 100 radionuclides may be considered in one case
Decay chains are limited to 9 members (be careful not to use the MEPAS RMDLIB.DAT)
The radon-diffusion model is not yet implemented in the near-field model
The software is still in testing - please report problems!
FRAMES Tutorial Home | Security & Privacy | Contact Us