| 北京一次突发性降雪的云场结构特征分析 |
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| 引用本文： | 潘晓滨,王舒畅,李毅.北京一次突发性降雪的云场结构特征分析[J].气象科学,2005,25(2):111-117. |
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| 作者姓名： | 潘晓滨 王舒畅 李毅 |
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| 作者单位： | 解放军理工大学气象学院,南京,211101 |
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| 基金项目： | 国家海军专项基金(编号:703-02-02-01)资助 |
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| 摘 要： | 本文对利用三重嵌套的高分辨率中尺度模式对北京一次突发性降雪过程进行了数值模拟。重点分析伴随降雪过程的云各微物理含量构成和云场三维图像的演变特征，初步分析表明：此次降雪过程中云中的主要成份是冰晶粒子，雪其它粒子的含量较少，冰晶粒子含量随时间呈由高空向低空增加的趋势，它在降雪过程中起重要作用；云的三维结构图也清楚地反映云顶有不断降低和向下伸展过程，这与冰晶粒子的增长和沉降有关。
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| 关 键 词： | 突发性降雪 云场结构 冰晶粒子 |
| 收稿时间： | 2003/12/4 0:00:00 |
| 修稿时间： | 2003年12月4日 |
ANALYSIS OF CLOUD FIELD STRUCTURE'S CHARACTER OF A PAROXYSMAL SNOWFALL IN BEIJING |
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| Pan Xiaobin,Wang Shuchang and Li Yi.ANALYSIS OF CLOUD FIELD STRUCTURE''S CHARACTER OF A PAROXYSMAL SNOWFALL IN BEIJING[J].Scientia Meteorologica Sinica,2005,25(2):111-117. |
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| Authors: | Pan Xiaobin Wang Shuchang and Li Yi |
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| Institution: | Meteorological Institute of PLAUST, Nanjing 211101;Meteorological Institute of PLAUST, Nanjing 211101;Meteorological Institute of PLAUST, Nanjing 211101 |
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| Abstract: | In this paper, a numerical modeling experiment has been made on a paroxysmal snowfall process in Beijing with three-mesh grids nesting high-resolution model. Composition of cloud microphysical particles content and character of three-dimension structure are analyzed in detail. Initial results show:the main composition of cloud in this snowfall process is ice crystal particle. The content of snow and other particles are less. Ice crystal particle has an increasing trend from higher level to lower. It plays an important role in this process. Three dimensional structure pictures of cloud make clear that the top of cloud has lowed and extended downwards continuously, which has relation to increase and sediment of ice crystal particle. |
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| Keywords: | Paroxysmal snowfallCloud field structureIce crystal particle |
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