| 中国地区天文夜晴空概率分布 |
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| 引用本文： | 毛节泰,王美华,毛亚莉,黄寅亮.中国地区天文夜晴空概率分布[J].中国天文和天体物理学报,1999(4). |
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| 作者姓名： | 毛节泰 王美华 毛亚莉 黄寅亮 |
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| 作者单位： | 北京大学地球物理系北京大学暴雨监测与预测实验室!北京１００８７１(毛节泰，王美华，毛亚莉)，天津理工大学!天津３００１９１(黄寅亮) |
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| 基金项目： | 中国科学院天文委员会基金 |
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| 摘 要： | 利用１９９５～１９９７年静止气象卫星（ＧＭＳ）红外通道的数据，采用综合了时间判断法、空间判断法和红外阈值法等特征的一种综合判断有云无云的方法，统计分析了中国地区较高空间分辨率（优于２０ｋｍ）和时间分辨率（优于１ｈ）的晴空概率和天文夜晴空概率的分布．分析结果表明，全年天文夜晴空概率的极值出现在我国的西部和北部．冬半年的最大天文夜晴空概率值大于夏半年．其中西藏地区１２月的天文夜晴空概率可达到９５％．
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| 关 键 词： | 天文选址 静止气象卫星（GMS）资料 天文夜晴空概率 |
Probability Distribution of Clear Astronomical Night in China |
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| MAO Jie-tai,WANG Mei-hua,MAO Ya-li.Probability Distribution of Clear Astronomical Night in China[J].Chinese Journal of Astronomy and Astrophysics,1999(4). |
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| Authors: | MAO Jie-tai WANG Mei-hua MAO Ya-li |
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| Abstract: | using infrared cloud imagery data of Geostationary Meteorological satellite(GMS)between 1995~1997, and a combined, temporal, spatial and infrared threshold criterion forcloud, we analyze the probability distributions of clear sky and clear astronomical night skyover China with a spatial resolution better than 20km and a temporal resolution betterthan 1 hr. The results show that the peak in the probability distribution of astronomicalnight sky over the whole year occurs in the western and northern parts of our country, thatthe maximum probability of astronomical night sky is higher in the winter half of the yearthan in the summer half and that the probability of astronomical night can be as high as95% in December in Tibet Region. |
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| Keywords: | GMS data probability of clear astronomical night |
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