DTRA Urban Dispersion Modeling Program

• UDM has been linked with SCIPUFF model
  (dispersion model within HPAC) to create CUSP
  
  (Coupled UDM-SCIPUFF) model

• DTRA used CUSP to support Presidential Inauguration

• Also can link UWM to CUSP
  • Results appear better … no validation yet

• In CUSP, UDM calculates dispersion within urban

environment, then passes material to large-scale

SCIPUFF

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