| 江淮地区冬季一次罕见强对流风暴的数值模拟结果诊断分析 |
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| 引用本文： | 魏绍远,林锡怀.江淮地区冬季一次罕见强对流风暴的数值模拟结果诊断分析[J].气象科学,1998,18(3):214-221. |
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| 作者姓名： | 魏绍远 林锡怀 |
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| 作者单位： | 空军气象学院!南京，211101，空军气象学院!南京，211101，空军气象学院!南京，211101，空军气象学院!南京，211101 |
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| 基金项目： | 国家自然科学基金!49375246 |
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| 摘 要： | 本文利用数值模拟的诊断分析结果对出现在江苏地区冬季的一次强对流风暴的成因进行了研究，结果表明，在河套气旋缓慢东移过程中，冷锋前暖区较长时期的大雾天气及下湿上干的湿度分布为强风暴的产生准备了大气层结不稳定的条件，中尺度辐合流场对强风暴的产生起了触发作用。对流云的下沉辐散气流是雷暴向前传播的重要机制。
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| 关 键 词： | 冬季 强对流风暴 数值模拟 诊断分析 |
DIAGNOSTIC ANALYSIS OF NUMERICAL SIMULATION RESULT FOR AREA WITH EXCEPTIONALLY SEVERE CONVECTIVE STORM IN JIANG-HUAI AREA DURING WINTER |
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| Wei Shaoyuan,Lin Xihuai,He Hongrang,Pan Xiaobin.DIAGNOSTIC ANALYSIS OF NUMERICAL SIMULATION RESULT FOR AREA WITH EXCEPTIONALLY SEVERE CONVECTIVE STORM IN JIANG-HUAI AREA DURING WINTER[J].Scientia Meteorologica Sinica,1998,18(3):214-221. |
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| Authors: | Wei Shaoyuan Lin Xihuai He Hongrang Pan Xiaobin |
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| Abstract: | By using the diagnostic analysis of numerical simulation result the cause ofsevere convective storm in Jiang-Huai area during winter was investigated in this paper. Theresult shows that the dense fog which maintains for a long time in the warm area of the coldfront and moisture field with dry in high levels and wet in low levels were found to preparethe instability stratification condition for the severe convective storm formation while the He-Tao cyclon(' moves slowly eastward. The severe convective storm was generated by themesosoale convergence flow fields and the downdraft divergent outflow under the cumu-lonimbus is the mechanism of the convective storm propagation. |
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| Keywords: | Winter Severe convective storm Numerical simulation Diagnostic analysis |
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