wrf user's workshop assessment of the wrf model for use in regional predictability studies...
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WRF User's Workshop
Assessment of the WRF Model for Use in Regional Predictability Studies
Joshua P. Hacker and Dave P. Baumhefner (NCAR)
Motivation Approach building a house Early results Future directions
WRF User's Workshop
Why Care?
Understand the capabilities and limitations of a current-generation grid point LAM
Create a stronger foundation for regional predictability studies
To what extent can we treat WRF as a proxy for the real atmosphere?
WRF User's Workshop
Building a House
Lateral boundaries
Mesoscale predictability
Res
olut
ion
Scale interaction
WRF
WRF User's Workshop
Comparison With Unbounded Model
WRF on hemispheric domain vs. CCM3 90 km at 45°N vs. T170 10-member ensembles Perturbations follow Errico-Baumhefner 6-day forecasts 4-5 winter 2001-02 cases chosen from different
regimes
WRF User's Workshop
WR
F
CC
M3
WR
F
WRF User's Workshop
Future Directions
Establish a valid perfect-model study region in (resolution, domain, forecast length) space
Observation system experiments Confident predictability studies of
mesoscale phenomena