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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.

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Presentation on theme: "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."— Presentation transcript:

1 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

2 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?

3 WRF User's Workshop Building a House Lateral boundaries Mesoscale predictability Resolution Scale interaction WRF

4 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

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8 WRF

9 CCM3

10 WRF

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14 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

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