| 我国华南谷物天气产量变化与大型环流准周期性振动的分析 |
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| 引用本文： | 汪铎,张镡.我国华南谷物天气产量变化与大型环流准周期性振动的分析[J].热带气象学报,1984,0(1):47-57. |
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| 作者姓名： | 汪铎 张镡 |
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| 作者单位： | 1.浙江师范学院地理系 |
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| 摘 要： | 本文分析了我国华南水稻天气产量、降水天气、大型气压环流三者的联系。揭示了"环流—天气—天气产量"具有20—30年左右的长周期振动和2—3年的短周期振动。长期振动模式描述为,北半球春季由太平洋赤道低压带与澳洲附近高压带组合的"南方涛动"偏弱时,相应地,夏季北太平洋高压偏强,华南处于多水期。水稻天气产量偏低。反之,华南处于少水期,水稻天气产量偏高。
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| 收稿时间： | 1984/6/30 0:00:00 |
| 修稿时间： | 1984/8/17 0:00:00 |
ANALYSIS OH THE LONG-TERM FLUCTUATION OF THE LARGE-SCALE CIRCULATION AND THE CHANGE OF WEATHER YIELD OF CORN IN THE SOUTH OF CHINA |
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| Wang Duo and Zhang Tan.ANALYSIS OH THE LONG-TERM FLUCTUATION OF THE LARGE-SCALE CIRCULATION AND THE CHANGE OF WEATHER YIELD OF CORN IN THE SOUTH OF CHINA[J].Journal of Tropical Meteorology,1984,0(1):47-57. |
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| Authors: | Wang Duo and Zhang Tan |
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| Institution: | 1.Zhejiang Teachers' College2.Beijing University |
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| Abstract: | The purpose of this paper is to investigate the system of "circulation pattern-weather-corn yield" for the southern region of China. A long-term fluctuation of 20-30-yr period and a short-term fluctuation of 2-3-yr period for the system are discovered. The characters of the quasi-periodic fluctuations of the large-scale circulation systems are explicated. The model of long-term fluctuation for "Circulation pattern-weather-corn yield" for the southern region of China can be summarised as that when Australia high pressure and Pacific equatorial depression belt are weaker in spring,the Northern Pacific] anticyclone will be stronger in summer,so that there will be a wet period and a low weather yield period for rics there.In reverse,tthere will be a dry period and a high weather yield period for rice there. |
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