| 云南山区日照时数的垂直分布 |
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| 引用本文： | 王宇.云南山区日照时数的垂直分布[J].山地学报,1993(1). |
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| 作者姓名： | 王宇 |
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| 作者单位： | 云南省气象局 昆明 |
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| 摘 要： | 根据云南省内若干山区气象资料,研究云南山区日照时效的垂直分布规律,得出一些有意义的结论:日照时数垂直分布有抛物线型、线性型、缓变型等;日照时数年内变化有冬大夏小型、春大夏小型、夏大冬小型3种;山区日照时数坡向差异明显,各山区不尽相同。
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| 关 键 词： | 云南省 山区 日照时数 垂直分布 |
VERTICAL DISTRIBUTION OF SUNSHINE DURATION PROVICE IN THE MOUNTAINOUS AREA OF YUNNAN |
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| Wang Yu.VERTICAL DISTRIBUTION OF SUNSHINE DURATION PROVICE IN THE MOUNTAINOUS AREA OF YUNNAN[J].Journal of Mountain Research,1993(1). |
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| Authors: | Wang Yu |
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| Abstract: | Based on the analyses of mountainous meteorological information of some areas in Yunnan. the following rules of the vertical distribution for sunshine duration in the mountainous areas of Yunnan have been arrived:The vertical distribution of annual sunshine duration in Yunnan takes parabolic type, linear type and slow changing type. In geneiral, the annual sunshine duration in most Yunnan mountainous areas decreases as a result of height increasing with height except for some places in Zhao-tong Prefecture.As for the vertical distribution of the sunshine duration in dry season and in rainy season, there are also parabolic type, linear type etc. In most case, the sunshine duration during the former is more than that during the later in most mountainous areas of Yunnan.The interannual change of sunshine duration mainly falls into three types, that is much in winter and little in summer, much in spring and little in summer, much in summer and little in winter. Most mountainous areas of Yunnan belong to the preceding two types. This means that most mountainous areas of Yunnan belong to the Chinese western monsoon climate.There are obvious distinction of sunshine duration between different slopes. In Ailao Mountain area, more sunshine duration on the western slope and relative less on the eastern slope under an altitude of 2,100 meters above sea level, and the in versed situation above the elevation have been observed. In Baimaxue Mountain area, similaily, the sunshine duration on western slope is more than that on eastern slope. But in Gaoligong Mountain area, little difference of sunshine duration between the eastern slope and the western slope was observed. The distinction of each month sunshine also is obvious in its distribution to slopes. |
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| Keywords: | Yunnan Province mountainous areas sunshine duration vertical distribution |
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