The Effects of Vertical Distribution of the LowerLevel Flow on Precipitation Location
The Effects of Vertical Distribution of the LowerLevel Flow on Precipitation Location
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发表时间：
2005
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通讯作者：
Sun Ji-song
中科院分区：
文献类型：
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作者：
Sun Ji-song
研究了地形对不同垂直分布气流的动力学影响。当山体垂直于气流方向时，当低层风强于高空风时，会产生辐散运动和风切变，涡旋增强，降水的波幅明显向迎风方向倾斜。到了背风坡，情况正好相反。但当高空风强于低空时，在迎风坡上会出现发散运动，在背风坡上会出现涡旋增强。用这些观点成功地解释了中国北部降水的不同分布。
The dynamical effects of the topography on air flows with different vertical distributing have been studied. If a mountain is upright to air flow, the results are as follows: When lower level wind is stronger than upper wind, the divergence motion and wind shear come into being, and eddy will be enhanced, so the precipitation obviously amplitudes against to windward slope. To leeward slope, the situation is opposite. However, when upper wind is stronger than lower, there will be diverged motion on windward slope and eddy will be enhanced on leeward slope. The viewpoints are successfully utilized to explain the different precipitation distributing which happened in North China.