| 南支气流对高原低涡移出青藏高原影响的诊断分析 |
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| 引用本文： | 郁淑华,高文良,肖玉华. 南支气流对高原低涡移出青藏高原影响的诊断分析[J]. 四川气象, 2009, 0(2): 1-8 |
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| 作者姓名： | 郁淑华 高文良 肖玉华 |
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| 作者单位： | 中国气象局成都高原气象研究所;四川省气象台; |
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| 基金项目： | 国家自然科学基金项目(40475020);;国家科技基础性工作专项(2006FY220300) |
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| 摘 要： | 利用NCEP再分析资料对2001年以来移出青藏高原后活动时间长（〉48小时）的3次高原低涡在南支气流影响下移出高原的个例，进行了325°K等熵面分析、500hPa水汽输送、涡度平流的诊断分析，得出了南支气流影响高原低涡移出高原的共同特征与差异，给出了南支气流对高原低涡移出高原影响的综合作用的概念模型。丰富了高原低涡东移的认识，为高原低涡洪涝暴雨的预报提供了科学依据。
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| 关 键 词： | 高原低涡 南支气流 诊断分析 |
Diagnosis of Effect of Southwesterlies on Tibetan Vortex Moving East |
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| YU Shuhua ,GAO Wenliang,XIAO Yuhua. Diagnosis of Effect of Southwesterlies on Tibetan Vortex Moving East[J]. Journal of Sichuan Meteorology, 2009, 0(2): 1-8 |
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| Authors: | YU Shuhua GAO Wenliang XIAO Yuhua |
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| Affiliation: | 1.Institute of Plateau Meteorology;CMA;Chengdu;610072;2.Sichuan Meteorological Obseroatory;610072 |
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| Abstract: | Tibetan Plateau Vortices(TPV),when moving eastward out of the plateau,usually cause catastrophic weather in East China.This study diagnoses the effect of southwesterly wind along the south periphery of Tibetan Plateau(often called the south branch of the subtropical westerly jet) on three such unique TPVs moving eastward out of the plateau(with their lifespan >48 hrs downstream) by means of the 325K isentropic surface,500 hPa vapor transfer and cyclonic vorticity advection with NCEP reanalysis data.Evidence... |
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| Keywords: | Tibetan plateau vortex Southwesterlies diagnosis |
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