Concentrating on local wind systems of several km or less, we have been developing an unsteady, nonlinear-type numerical simulator called the RIAM-COMPACT.The RIAM-COMPACT is based on the FDM (Finite-Difference Method), and adopts an LES (Large-Eddy Simulation) technique as a turbulence model.

• All urban areas and complex geographical features can be minutely reproduced in cooperation with Geographical
  Information System (GIS).
• The local wind prediction that includes the various atmospheric stabilities (the effect of temperature stratification) is achieved.
• The advection and dispersion forecast of air pollutants such as dust is also possible.