| 九华山区地形逆温对天气变化的前兆作用 |
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| 引用本文： | 丁仁海,许义伍,丁鑫.九华山区地形逆温对天气变化的前兆作用[J].气象科技,2013,41(6):1080-1085. |
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| 作者姓名： | 丁仁海 许义伍 丁鑫 |
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| 作者单位： | 安徽省九华山气象台，九华山 242811;九华山气象管理处，九华山 242811;九华山气象管理处，九华山 242811 |
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| 摘 要： | 九华山受山区下垫面影响，升温期间温度的垂直分布有时出现山上温度大于山下的异常现象,即地形逆温。通过山区不同高度上温度的垂直对比以及其日变化特征分析，表明：山区地形逆温现象总是在升温期间出现的，并以日最低气温要素垂直分布的异常特征最为明显（与日平均气温、最高气温比较）；最低气温出现的逆温具有明显季节性特征；山区日最低气温垂直分布出现的地形逆温对天气变化有很好的前兆作用：升温期间有地形逆温出现，消失后必会降温，降温期间必有降水和复杂天气出现；而且形成“地形逆温”的时间和幅度与后来的降温持续时间、降温幅度及天气都有一定的对应关系。因此，在山区复杂地形中分析气温的时空变化特征，对于气温变化的分区预报和天气转变的预测都有很好的前兆作用。
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| 关 键 词： | 地形逆温 天气变化 前兆特征 |
| 收稿时间： | 2012/9/11 0:00:00 |
| 修稿时间： | 2/8/2013 12:00:00 AM |
Precursor Effect of Terrain Inversion on Weather Changes in Jiuhua Mountain |
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| Ding Renhai,Xu Yiwu and Ding Xin.Precursor Effect of Terrain Inversion on Weather Changes in Jiuhua Mountain[J].Meteorological Science and Technology,2013,41(6):1080-1085. |
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| Authors: | Ding Renhai Xu Yiwu and Ding Xin |
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| Institution: | 1 Jiuhua Mountain Meteorological Observatory of Anhui Province, Jiuhua Mountain 242811; 2 Jiuhua Mountain Meteorological Office, Jiuhua Mountain 242811) |
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| Abstract: | Affected by the mountain underlying surface, temperature distribution sometimes appears anomalies, i.e., terrain inversion （the temperature on the mountain top is greater than that at the foot of the mountain） in the Jiuhua Mountain during the period of temperature increase. Through the comparison of temperatures at different heights in the mountains and the diurnal variation characteristics of analysis， it is concluded that： terrain inversion usually appears in the temperature increase period in the mountains, and the anomalous characteristics in the vertical distribution of daily minimum temperature are most obvious （compared with daily average temperature and maximum temperature）； the terrain inversion of minimum temperature has obvious seasonal characteristics；the terrain inversion of the daily minimum temperature has good indicative significance to weather changes. After the disappearing of terrain inversion in the warming period, there will certainly is a cooling, in which rainfall and complex weather situation will happen. There is a fairly good relationship between the time and amplitude of terrain inversion and the subsequent cooling duration and cooling amplitude. Therefore, to analyze the spatial and temporal variation of temperature in the complicated mountainous terrain is helpful for temperature prediction. |
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| Keywords: | terrain inversion weather change precursory characteristic |
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