| 拉萨5mm以上降水日数与旱涝的关系 |
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| 引用本文： | 向毓意,许燕.拉萨5mm以上降水日数与旱涝的关系[J].气象,1998,24(5):39-41. |
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| 作者姓名： | 向毓意 许燕 |
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| 作者单位： | 西藏自治区气候中心 |
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| 摘 要： | 运用Ｚ指数法对拉萨历年汛期（６￣９月）的旱涝等级进行划分；并分析了实际日降水量≥５ｍｍ日数、相当日降水量≥５ｍｍ日数与旱涝等级的关系。结果表明：Ｚ指数法所划分的旱涝等级与实际情况吻合；相当日降水量≥５ｍｍ日数不仅对汛期雨水的丰欠具有决定性的作用，而且与旱涝等级有着极好的相关性。
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| 关 键 词： | 旱涝 降水日数 拉萨 降水量 Z指数 |
The Correlation Analysis between 5mm and over Precipitation Days and Drought/flood in Lhasa |
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| Xiang Yuyi\ Xu Yan.The Correlation Analysis between 5mm and over Precipitation Days and Drought/flood in Lhasa[J].Meteorological Monthly,1998,24(5):39-41. |
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| Authors: | Xiang Yuyi\ Xu Yan |
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| Abstract: | The severity of drought/flood is divided by Z index in flood season in Lhasa, Tibet. Then the correlation between 5mm and over precipitation equivalent days and the drought/flood severity was studied. Results show that the severity which determined by Z index tally with the facts. The 5mm and over precipitation equivalent days not only indicate the precipitatiion in flood season but also express high correlation with drought/flood severity. |
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| Keywords: | Z index\ Drought/flood severity\ 5mm and over precipitation \ equivalent days |
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