| 青藏高原夏季中尺度强对流系统的时空分布 |
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| 引用本文： | 江吉喜,项续康.青藏高原夏季中尺度强对流系统的时空分布[J].应用气象学报,1996,7(4):473-478. |
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| 作者姓名： | 江吉喜 项续康 |
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| 作者单位： | 1.国家卫星气象中心 |
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| 摘 要： | 利用1994年6～8月GMS-4红外展宽数字资料，统计和分析了青藏高原上293个中尺度强对流系统（s-MCS）的活动。结果表明，它们在高原上活动频繁，并且其生命史、水平尺度及强度具有较典型的中-β尺度系统特征；它们的形成和发展主要是由于地形热力效应；它们的移动方向与300～200 hPa间的平均气流方向大体一致，并且极少移出高原。
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| 关 键 词： | 青藏高原 中尺度强对流系统 时空分布 |
The Spatial and Temporal Distributions of Severe Mesoscale Convective Systems over Tibetan Plateau in Summer |
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| Jiang Jixi,Xiang Xukang,Fan Meizhu.The Spatial and Temporal Distributions of Severe Mesoscale Convective Systems over Tibetan Plateau in Summer[J].Quarterly Journal of Applied Meteorology,1996,7(4):473-478. |
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| Authors: | Jiang Jixi Xiang Xukang Fan Meizhu |
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| Affiliation: | 1.(National Satellite Meteorological Center, Beijing 100081) |
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| Abstract: | By using GMS-4 hourly IR stretched digital data from June through August 1991, all 293 severe Mesoscale Convective Systems (s-MCSs) Over Tibetan Plateau were investigated and analysed. The results show that those s-MCSs had larger frequency and more typical features of Meso-β scale system in its life cycle, size and intensity; their initiation and development was mainly derived from the thermotopographic effect; their movement basically consorted with the mean flow between 300 and 200 hPa, and few of them moved away from Tibetan Plateau. |
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| Keywords: | Tibetan Plateau Severe Mesoscale Convective System (s-MCS) Spatial andtemporal scales |
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