| 河南省2005-06-21强对流天气分析 |
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| 引用本文： | 郑世林,席世平.河南省2005-06-21强对流天气分析[J].河南气象,2006(3):46-47. |
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| 作者姓名： | 郑世林 席世平 |
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| 作者单位： | 河南省气象台 河南郑州450003 |
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| 摘 要： | 利用天气图和FY-2C的卫星云图及其反演产品,分析了2005年6月21日凌晨到上午河南省中部的雷雨大风和冰雹天气过程,结果表明:高空冷平流、地面辐合线和前期贮存的较高不稳定能量,为此次强对流天气过程提供了极为有利的不稳定能量和动力条件;在灾害性天气发生的前期,FY-2C卫星云图及其反演产品有很好的指示性,云顶亮温梯度大的区域是灾害性天气的易发区,对流性降水易发生在高层急流南侧的低层高湿区。
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| 关 键 词： | Sweat指数 风暴强度指数 云顶亮温 云迹风 云区湿度廓线 |
| 文章编号： | 1004-6372（2006）03-0046-02 |
| 收稿时间： | 2006-03-05 |
Analysis on Severe Convection Weather on June 21,2005 in Henan |
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| ZHENG Shi - lin, XI Shi - ping.Analysis on Severe Convection Weather on June 21,2005 in Henan[J].Meteorology Journal of Henan,2006(3):46-47. |
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| Authors: | ZHENG Shi - lin XI Shi - ping |
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| Institution: | Meteorological Observation of Henan Province, Zhengzhou 450003, China |
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| Abstract: | By using synoptic charts and satellite cloud pictures of FY-2C and its retrieval products,the article analysed the process of thunder storm,gale and hailstone from wee hours to morning on June 21,2005 in the middle of Henan.The conclusion indicates upper cold advection,surface convergence line and upper instability energy stockpiled in the antecedent period provided very advantaged instability energy and dynamic conditions.Satellite cloud pictures of FY-2C and its retrieval products have good showing meaning in the period before disaster weather happen.The region of large grads of cloud top brightness temperature is the area where disaster weather occurs easily.Convective precipitation occurs easily in the region of lower high humidity in the south of upper jet stream. |
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| Keywords: | Sweat index Storms severity index Cloud top brightness temperature Cloud track Cloud region humidity profile |
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