| 用正月十五月影长度预测乌盟地区汛期降水的机理分析 |
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| 引用本文： | 韦志刚,张双印.用正月十五月影长度预测乌盟地区汛期降水的机理分析[J].高原气象,1997,16(4):425-432. |
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| 作者姓名： | 韦志刚 张双印 |
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| 作者单位： | 中国科学院兰州高原大气物理研究所 |
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| 基金项目： | 国家“九五”重中之重科技项目96－908－04－05－5和96－908－04－04课题资助 |
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| 摘 要： | 介绍了用正月十五月影长度作乌盟地区汛期降水预报的方法。分析指出，月影长度实际上反映正月十五上中天时刻的月赤纬的大小，月影短月赤 纬大，而月影长则月赤纬小。
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| 关 键 词： | 月影长度 引潮力 汛期降水 降水预报 乌盟地区 |
ON MECHANISM TO FORECAST THE RAINFALL IN FLOOD SEASON UTILIZING THE LENGTH OF THE MOON'S SHADOW ON 15 LUNAR CALENDAR JANUARY IN ULANQAB LEAGUE DISTRICT |
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| Abstract: | In this paper,at first,the method to forecast the rainfall in flood season utilizing the length (L ) of the moon's shadow on 15 lunar calendar January in Ulanqab League district is introduced. Then, the following mechanism is pointed out: L indicates the lunar declination at the upper central meridian passage on 15 lunar calendar January. When L>(<)5.1 cun, the maximum tide-generating force at the new and full moon in flood season is positive(negative),it causes the rainfall is much(little) from April to September in Ulanqab League. |
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| Keywords: | Length of the moon's shadow Lunar declination Tide-generating force Rainfall in flood season |
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