AWC Evaluation from Steve Silberberg

• 250 hPa jet streams, vert wind shear, & Ellrod stronger in NAM-Parallel  improved turbulence guidance

• NAM-Parallel moisture and icing guidance equivalent to NAM-Operational

• NAM-Parallel Stability equivalent to NAM-Operational

• NAM-Parallel visibility equivalent to NAM-Operational

• NAM-Parallel surface friction velocity more realistic around topography and coastline than NAM-Operational

• NAM-Parallel composite reflectivity not as good as NAM-Operational

• AWC recommends operational implementation of NAM-Parallel

• Thank you

  • EMC for development
  • and NCO for dataflow