A Comparative Study on Performance of Analysis Nudging and 3DVAR in Simulation of a Heavy Rainfall Event Using WRF Modeling System

<table> (a)–(f): Vertical cross-sections of wind components with contour interval 2 m s<sup>−1</sup> valid at 0000 UTC on 25 June 2005; meridional cross-section of zonal wind (<svg height="7.1624999" id="M4" style="vertical-align:-0.11285pt" version="1.1" viewbox="0 0 7.5374999 7.1624999" width="7.5374999" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,7.1625)">
<g transform="translate(72,-66.27)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑢</tspan>
</text>
</g>
</g>
</svg>-component) along 72.8°E for (a) FNL ANA; (b) NUD and (c) 3DV. (d)–(f) are the same as (a)–(c), respectively, but for zonal cross-section of meridional wind (<svg height="7.4250002" id="M5" style="vertical-align:-0.11285pt" version="1.1" viewbox="0 0 8.0375004 7.4250002" width="8.0375004" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,7.425)">
<g transform="translate(72,-66.06)">
<text transform="matrix(1,0,0,-1,-71.95,66.22)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑣</tspan>
</text>
</g>
</g>
</svg>-component) along 21.1°N.</table>

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fig6

Figure 6

Figure 6: A Comparative Study on Performance of Analysis Nudging and 3DVAR in Simulation of a Heavy Rainfall Event Using WRF Modeling System 