Numerical Simulation of Near-Surface Wind during a Severe Wind Event in a Complex Terrain by Multisource Data Assimilation and Dynamic Downscaling

Figure 10

Near-surface wind streams (vectors, unit: m s⁻¹) at 70 m in (([[parms resize(1),pos(50,50),size(200,200),bgcol(156)]]), (c), (e)) WRF + 3DVAR and ((b), (d), (f)) WRF + 3DVAR + CALMET at ((a)-(b)) 1200 UTC 21 Oct 2010 when near-surface wind is strong, ((c)-(d)) 0100 UTC 23 Oct 2010 when near-surface wind decays, and ((e)-(f)) 1100 UTC 23 Oct 2010 when near-surface wind is weak. The shaded colours denote the terrain topography in the vicinity of the three wind towers in different models. The red and black vectors denote the observed and simulated wind directions.

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