PPT Slide

Shallow water equations on the sphere:

• Use Hough mode expansion (Kasahara);

• Separate fast and slow modes;

• Use a balancing formula (Daley) for the fast modes

• Tests - Frequency filtering

  • Hough mode filtering; shallow water model
  • Normal mode filtering; shallow water model on the forecast scale
  • Normal mode filtering; shallow water model on the climate scale
  • Hough mode filtering; CCM3 on the seasonal scale

Previous slide

Next slide

Back to first slide

View graphic version