| 汶川特大地震中心“8.13”连续性暴雨天气分析 |
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| 引用本文： | 刘琼,武敬峰,周永明. 汶川特大地震中心“8.13”连续性暴雨天气分析[J]. 高原山地气象研究, 2013, 33(2): 30-35. DOI: 10.3969/j.issn.1674-2184·2013.02.005 |
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| 作者姓名： | 刘琼 武敬峰 周永明 |
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| 作者单位： | 四川省阿坝州气象局, 马尔康 624000 |
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| 摘 要： | 利用NCEP1°×1°再分析资料、常规高空及地面资料,对2010年8月12~14日川西高原北部阿坝州东南部的漩映地区出现的连续性暴雨形成机制进行了探讨。结果表明:此次过程发生在副热带高压加强西伸至青藏高原形成一个强大的高压带,此高压带断裂后,在两高之间形成长时间切变,缓慢东移触发不稳定能量的释放;700hPa上西南低空急流为暴雨区输送了源源不断的水汽;地面冷锋受副高阻塞缓慢东移;地形摩擦抬升在盆地西部不断形成气流辐合都是造成此次连续性降水的直接原因。
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| 关 键 词： | 连续性暴雨 副热带高压 不稳定能量 低空急流 |
| 收稿时间： | 2013-04-13 |
Weather Analysis of a Continuous Rainstorm in Wenchuan Earthquake Center |
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| LIU Qiong , WU Jingfeng , ZHOU Yongming. Weather Analysis of a Continuous Rainstorm in Wenchuan Earthquake Center[J]. Journal of Sichuan Meteorology, 2013, 33(2): 30-35. DOI: 10.3969/j.issn.1674-2184·2013.02.005 |
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| Authors: | LIU Qiong WU Jingfeng ZHOU Yongming |
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| Affiliation: | Sichuan Aba Meteorological Bureau, Barkam 624000, China |
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| Abstract: | Based on the NCEP /NCAR 1°×1°reanalysis data,air sounding data and surface data,the formation mechanism of continuity storm in Northern Sichuan Plateau are studied.Result show that this process occurs in subtropical westward extension to Tibet Plateau and shaped a strong high pressure zone.After the high pressure zone is ruptured,it formed long time shear between the two high pressures and it slowly moved eastwards to trigger release of unstable energy.The southwest low level jet transports water vapor for the rainfall areas on 700hPa.Surface cold front slowly moved eastward by the subtropical high blocking. |
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