PPT Slide

• Essential features of initial 3D-Var system:
  • Basic quality control
  • Assimilation of conventional observations (surface, radiosonde, aircraft)
  • Multivariate analysis
  • Adherence to WRF coding standards

• Additional features to be added:
  • 3-D anisotropic background errors using recursive filters
  • Additional observation operators (radar, satellite, wind profiler, etc.)
  • Flexible choice of first guess
  • Further enhancements

WRF 3D-Var Data-Assimilation System

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