| 下垫面强迫对京津冀大暴雨作用的数值研究 |
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| 引用本文： | 董佩明 张维桓,沈桐立.下垫面强迫对京津冀大暴雨作用的数值研究[J].应用气象学报,1999,10(4):436-444. |
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| 作者姓名： | 董佩明 张维桓 沈桐立 |
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| 作者单位： | 1.董佩明 （空军气象研究所，北京100085）;张维桓 （空军气象学院，南京211101） |
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| 摘 要： | 使用MM4对1992年7月23日发生在京津冀地区的大暴雨过程进行了数值模拟;利用模拟得到的高时空分辨率资料，通过使用Mass模式所进行的几组试验以及用MM4所做的敏感性试验，说明了在该次大暴雨过程中下垫面的动力及热力强迫作用。指出:下垫面强迫所导致的辐合上升运动是这次暴雨过程的触发机制。
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| 关 键 词： | 下垫面强迫 暴雨 触发机制 |
Numerical Study on the Effects of Underlying Surface Forcing on Torrential Rain Process over Beijing-Tianjin-Hebei Region |
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| Institution: | 1) (Air Force Research Institute of Meteorology, Beijing 10085); 2) (Air Force Institute of Meteorology, Nanjing 211101); 3) (Nanjing Institute of Meteorology, Nanjing 210044) |
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| Abstract: | The torrential rain process on July 23, 1992 over Beijing-Tianjin-Hebei region is simulated by using the model MM4. With the model products of high temporal and spatial resolution, some kinds of numerical experiments employing numerical models Mass & MM4 are designed here to demonstrate the effects of underlying surface mechanical and thermal forcing on the torrential rain process. It is pointed out that the strong upward motion associated with surface convergence forced by underlying surface is the trigger mechanism of the torrential rain process. |
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| Keywords: | Underlying surface forcing Torrential rain Trigger mechanism |
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