| 一个诊断非平坦地形上边界层风的数值模式 |
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| 引用本文： | 赵鸣,马继军.一个诊断非平坦地形上边界层风的数值模式[J].应用气象学报,1993,4(1):57-64. |
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| 作者姓名： | 赵鸣 马继军 |
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| 作者单位： | 1.南京大学大气科学系 南京210008
(赵鸣)，南京大学大气科学系 南京210008(马继军) |
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| 摘 要： | 根据半地转大气边界层模式，由大尺度数值模式并考虑了下垫面地形及粗糙度的水平非均匀性及大尺度气压场的时空变化，给出了一个诊断边界层风的数值模式。对低纬度运用塔层风模式进行诊断。诊断结果与实测资料比较，风向风速均达到了一定的精确度。
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| 关 键 词： | 边界层风 诊断数值模式 非平坦地形 半地转 塔层 |
A Numerical Model for Diagnosing Boundary Layer Wind over Real Terrain |
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| Zhao Ming Ma Jijun.A Numerical Model for Diagnosing Boundary Layer Wind over Real Terrain[J].Quarterly Journal of Applied Meteorology,1993,4(1):57-64. |
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| Authors: | Zhao Ming Ma Jijun |
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| Affiliation: | 1.(Department of Atmospheric Sciences, Nanjing Univetsity, Nanjing 210008) |
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| Abstract: | Based on semi-geostrophic PBL model and large-scale model, a diagnostic model to calculate boundary layer wind is introduced. The horizontal inhomogeneities of terrain and the roughness of ground, the temporal and spatial variations of large-scale pressure field are included in this model. A terrain coordinate transformation is introduced to compute the horizontal gradient of the geostrophic winds. The tower layer wind model is used to diagnose the boundary layer wind instead of the semi-geostrophic model for the lower latitude. The comparison with the observational data shows that the diagnosis has attained a fairly high level accuracy for both wind direction and wind speed. Therefore, it can be used in practice to diagnose or forecast the PBL wind when largescale model is incorporated. |
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| Keywords: | The PBL wind Diagnostic numerical model Real terrain Semi-geostrophic Tower layer |
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