| 长江上、中游地区春季首次大降水天气形势分析 |
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| 引用本文： | 游性恬,韩曙晔,王梅华.长江上、中游地区春季首次大降水天气形势分析[J].气象,1997,23(6):24-27. |
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| 作者姓名： | 游性恬 韩曙晔 王梅华 |
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| 作者单位： | 北京气象学院 |
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| 摘 要： | 该文普查了１９６１－１９９４共３４年长江上、中游地区春季首次大降水的日期及环是到：春季首次大降水大多出现在４月份；高藏高原以东的低值系统以及来自西伯利亚的冷空气南下补充是导致大降水的两个必要条件。
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| 关 键 词： | 降水分析 天气形势分析 长江 中上游地区 |
An Analysis of the Atmospheric Circulation Pattern for the First Time Heavy Rain in Spring in the Upper Middle Reaches of Changjiang |
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| You Xingtian,Han Shuye,Wang Meihua.An Analysis of the Atmospheric Circulation Pattern for the First Time Heavy Rain in Spring in the Upper Middle Reaches of Changjiang[J].Meteorological Monthly,1997,23(6):24-27. |
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| Authors: | You Xingtian Han Shuye Wang Meihua |
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| Abstract: | The dates and atmospheric circulation patterns of the heavy rain in spring were investigated based on data during 34 years from 1961 to 1994. It is found that the first time heavy rains in spring mostly (about 80%) occur in April;two necessary conditions for the heavy rain are that:the synoptic depression system appears in east of Tibet Plateau and a cold air mass,which moves from Siberia,intrudes into the depression system. |
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| Keywords: | first time heavy rain atmospheric circulation pattern necessary condition |
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