| 一个三重嵌套的中尺度模式及暴雨模拟试验 |
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| 引用本文： | 郑国安,郭肖容.一个三重嵌套的中尺度模式及暴雨模拟试验[J].应用气象学报,1995,6(2):129-137. |
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| 作者姓名： | 郑国安 郭肖容 |
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| 作者单位： | 1.国家气象中心 |
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| 基金项目： | 中国气象局强风暴开放实验室和“八五”项目共同资助 |
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| 摘 要： | 该文介绍了新近发展的一个高分辨率有限区模式(HLAM)。它是通过三重嵌套在现有计算机(CYBER-992)条件下实现的，其范围、地理位置及侧边界宽度均设计为灵活可变，尤其水平分辨率可按任意倍数提高。利用水平分辨率为50km左右的模式版本进行了实际资料的降水个例实验。结果是令人鼓舞的:(1)与嵌套的低分辨率(格距增大4倍)模式预报比较，不论低压中心位置、强降水落区、雨带走向及降水中心位置的预报都更接近实况;(2)高分辨率模式积分区域虽然缩小，但并未影响预报效果，其48小时预报仍有较高精度。初步试验表明，进一步完善和改进后的HLAM完全可以发展为一个用于中尺度研究及业务使用的高分辨率区域模式。
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| 关 键 词： | 三重混合嵌套 中尺度模式 暴雨模拟 |
A Triple Nested Mesoscale Model and the Numerical Simulation for Heavy Rain |
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| Zheng Guoan,Cuo Xiaorong.A Triple Nested Mesoscale Model and the Numerical Simulation for Heavy Rain[J].Quarterly Journal of Applied Meteorology,1995,6(2):129-137. |
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| Authors: | Zheng Guoan Cuo Xiaorong |
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| Affiliation: | 1.(National Meteorological Center, Beijing 100081) |
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| Abstract: | A triple nested High resolution Limited Area Model (HLAM) is recently developed and runs on computer CYBER-992. The model’s domain, geographical location, lateral boundary width, especially horizontal resolution are highly flexible. A case of heavy rain is simulated using this model with horizontal resolution of 50 km. The results are encouraging: (1) The location of low pressure centers, the area of heavy rainfall and the trend of rain-band are more closer to those of analysis as compared with low resolution nested grid model. (2) Although the area of high resolution model’s simulation is reduced, the forecast effect is not influenced and 48 hour forecast still has high precision. Preliminary experiments show that HLAM can be developed into a regional high resolution model for mesoscale research and operational forecasts. |
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| Keywords: | Triple nested Mesoscale model Simulation for heavy rain |
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