PPT Slide

• Currently using 3D VAR 12 km analyses reconfigured to 4 km then 1 km. Introduces imbalance/noise.

• Developing tools to quantify imbalance.

• Developing alternative approaches to using low resolution analysis in high resolution model.

  • Reconfigure analysis increments and nudge into high resolution model through existing IAU.
  • Digital filter.

• 3D VAR (4 km) implementation starting 2003.

• Experiments with Latent Heat Nudging

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