| 新疆西南部一次局地对流性暴雨成因分析 |
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| 引用本文： | 肉孜·阿基,王金辉,阿依谢姆古丽·孜比不拉,王东,阿不都热合曼·吐尔逊,支俊.新疆西南部一次局地对流性暴雨成因分析[J].气象科技,2016,44(3):439-446. |
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| 作者姓名： | 肉孜·阿基 王金辉 阿依谢姆古丽·孜比不拉 王东 阿不都热合曼·吐尔逊 支俊 |
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| 作者单位： | 1 新疆维吾尔自治区气象台，乌鲁木齐 830002； 2 新疆克州气象局，克州 845350,新疆克州气象局，克州 845350,新疆克州气象局，克州 845350,新疆克州气象局，克州 845350,新疆克州气象局，克州 845350,新疆岳普湖县气象局，喀什 844400 |
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| 基金项目： | 中国沙漠气象科学研究基金（sqj201413）、新疆气象局面上项目（MS201522）共同资助 |
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| 摘 要： | 利用常规地面和探空气象资料、NCEP逐6h1°×1°的再分析资料和(CINRAD-CC)多普勒雷达探测资料,对2012年7月19日新疆阿图什罕见的短时对流性暴雨形成原因进行了诊断分析。结果表明:此次天气是在南疆低涡有利的环流背景下、低层中尺度低涡促进上升运动及触发不稳定能量释放产生的;冷空气的入侵是造成对流扰动发展的重要原因,同时地面小尺度系统对触发不稳定能量释放也有一定的作用;涡散场的配置、垂直速度、低层偏东急流和强不稳定能量满足了对流发生的基本条件,而较强的垂直风切变则使风暴明显增强;从喀什探空订正图来看,修正后的探空资料中各要素对开展强对流潜势预报有很好的指示意义,有待进一步总结验证;对多普勒雷达资料的分析表明,此次强降水具有强回波、强的垂直风切变、大的垂直液态水含量和较高回波顶高等,与强对流天气的发生发展及落区有较好的对应关系。
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| 关 键 词： | 对流性暴雨 中尺度气旋 多普勒雷达产品 |
| 收稿时间： | 2015/4/26 0:00:00 |
| 修稿时间： | 2016/1/21 0:00:00 |
Causal Analysis of a Local Convective Storm in Southwestern Xinjiang Province |
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| Rouzi Aji,Wang Jinhui,Ayixiemuguli Zibibul,Wang Dong,Abudureheman Tuerxun and Zhi Jun.Causal Analysis of a Local Convective Storm in Southwestern Xinjiang Province[J].Meteorological Science and Technology,2016,44(3):439-446. |
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| Authors: | Rouzi Aji Wang Jinhui Ayixiemuguli Zibibul Wang Dong Abudureheman Tuerxun and Zhi Jun |
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| Abstract: | The formative causes of a short time convective rainstorm on 19 July 2012 at Atux in Xinjiang is analyzed based on multiple data including surface, radiosonde, Doppler weather radar, 6 h 1°×1° NCEP reanalysis data, and automatic station data. The results show: (1) The weather process was triggered by the upward movement and instability energy release of a mesoscale cyclone at low levels on the background of a vortex located over the south Xinjiang. (2) The invasion of cold air was one of important reasons for the convective development, and the small scale synoptic systems in surface also contributed to instability energy release. The basic convective conditions such as vorticity and divergence field configuration, vertical speed, low level easterly jet, and strong unstable energy were fulfilled and enhanced by the severe vertical wind shear. (3) The corrected sounding data of Kasha was more indicative of severe convection potential forecast and still need further verification. (4) According to Doppler radar data, the strong echo reflectivity, severe vertical wind shear, richer vertical integrated liquid, and higher echo top have close relation with the development and precipitation of the weather process. |
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| Keywords: | convective rainstorm mesoscale cyclone Doppler weather radar |
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