Based on a rainstorm event in North China during 17-19 August,2010,by using WRF model,eight numerical experiments were designed to test the sensitivity of different boundary layer schemes on rainstorm simulation.Results show that the simulated results with different schemes are differ ent.When the domain resolution is 12 km,the seven boundary layer scheme experiments all simulated the four observed strong precipitation locations,but the exact location and rainfall intensity were different from the observation.For NOPBL experiment,the rain belt was narrower,and its precipitation was more concentrated.When the resolution is 4 km,the seven boundary layer scheme experiments all simulated small-scale precipitation structures,however,they were not obvious in NOPBL experiment.MYJ experiment performs best with 12 km resolution,but when the resolution is 4 km,BouLac experiment is the best.Furthermore,the results indicate that the increasing water vapor flux convergence,the strengthening upward motion,and the enlargement of absolute value of divergence and vorticity are all depends on the selected boundary layer scheme.
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